Detoxify XXtra Clean vs Mega Clean: Bottle Size, Ingredients, Price and Which One Fits You

Updated 1 Nov 2026 · Written by Daniel Brooks · Medically reviewed by Dr. Maya Chen, PharmD

If you're stuck choosing between Detoxify XXtra Clean and Mega Clean, here's the short version. They're the same type of product from the same company, built on the same two-step routine, and they promise the same three-to-four-hour "optimal cleansing" window. The real differences are size and strength: XXtra Clean is a 20-ounce bottle Detoxify pitches at average toxin exposure, while Mega Clean is a 32-ounce bottle pitched at high exposure, with guarana seed extract and taurine added to the blend. Mega Clean costs more per bottle but less per ounce. Neither one has independent proof behind it, and Detoxify itself says its drinks are "not designed for tests of any sort." Below I break down every difference that actually matters, where the marketing stops and the science starts, and how to figure out which one, if either, makes sense for you.

Disclaimer: This page is general information, not medical or legal advice. No detox drink or method can promise you'll pass a drug test, and the only sure way to pass is to not use. Diluting or tampering with a workplace sample can be illegal in some places and is often treated as a refusal to test. This page does not apply to DOT, federal, court-ordered, probation, parole or military testing, where you must follow the program's rules. We have not lab-tested either drink ourselves. The product facts below come from Detoxify's own product pages and comparison article, read on November 1, 2026, plus published research where noted.

The quick answer

Pick by how much you've been exposed, not by brand loyalty or bottle color. That's actually Detoxify's own advice: its product pages now say to ignore weight and BMI and choose a cleanse "based on the level of toxicity." By that logic:

• XXtra Clean is the "average toxicity" option. It's 20 ounces, tropical flavored, and costs $31.99 on Detoxify's own store.
• Mega Clean is the "high toxicity" option. It's 32 ounces, tropical flavored on the product page (Detoxify's blog also mentions a grape version), and costs $39.95 on Detoxify's store.
• Both use the same two steps: drink the whole bottle, wait 15 minutes, refill the bottle with water and drink that too. Both say the optimal period is three to four hours after the final step. Both recommend 48 hours without new toxins and Detoxify's Precleanse capsules beforehand.

If you only remember one thing from this guide, make it this: the biggest functional difference between the two is the amount of fluid you drink. Mega Clean plus its refill puts about 64 ounces into you. XXtra Clean plus its refill is about 40 ounces. Everything else, the herbs, the vitamins, the "same-day" language, sits on top of that basic fact. Fluid dilutes urine for a few hours. It doesn't erase metabolites stored in your body, and it can't promise anything.

Side-by-side comparison

Prices change and retailers set their own, so treat those numbers as a snapshot. TestClear, the retailer our buttons point to, sells both drinks; check the listing for the current price and whether a Precleanse bundle is included.

What Detoxify XXtra Clean is

XXtra Clean is Detoxify's middle option. The product page calls it an "average toxicity cleanse" with "same-day results," and says it supports urinary, circulatory and digestive detoxification. It comes in a 20-ounce tropical-flavored bottle with added vitamins and minerals. The marketing leans on American ginseng root extract, which Detoxify says supports "healthy, sustained energy" and helps reduce feelings of stress.

A small honesty note on that ginseng claim. Detoxify's comparison article describes American ginseng as "a natural caffeine source." Ginseng isn't a known source of caffeine; its active compounds are a family called ginsenosides. Caffeine in herbal products usually comes from things like guarana, coffee, tea or yerba mate. XXtra Clean's ingredient list on the product page doesn't include guarana. So if you're expecting a caffeine kick from XXtra Clean, don't count on it, and if you're sensitive to caffeine, check the full printed label on the bottle you actually buy.

Older retail listings, and our own earlier XXtra Clean guide, described XXtra Clean as suited to moderate toxin levels and/or larger body mass. Detoxify's current product page has dropped the body-mass angle and simply says it's for average levels. That change matters because a lot of online advice still says "big guy, get XXtra Clean." The maker no longer frames it that way.

For how long its effect is supposed to last and why the numbers you see online differ, see our full guide on how long Detoxify XXtra Clean lasts.

What Detoxify Mega Clean is

Mega Clean is the top of Detoxify's drink range. The product page calls it a "high toxicity cleanse" that "works indiscriminately on all toxins" and lists the same urinary, circulatory and digestive language as XXtra Clean. The bottle is 32 ounces, 60% bigger than XXtra Clean. The herbal blend adds guarana seed extract and taurine to the five herbs both drinks share, and the description highlights milk thistle, ginseng root, guarana and uva ursi.

Detoxify's blog frames Mega Clean as something you could use for "one-time needs" but suggests it as part of a "monthly or periodic cleansing routine," and stresses that it works best paired with the Precleanse supplement and 48 hours without new toxin intake. The FAQ on the product page says Mega Clean "helps to flush toxins at average to higher levels," which is slightly broader than the "high toxicity" headline. In plain terms: Detoxify positions Mega Clean as the one to grab when you think you need the most help.

The ingredient blends, one by one

Detoxify calls its herbal mix a "proprietary blend," which means the label lists what's in it but not how much of each herb. That's legal and common for supplements, but it means nobody outside the company can say whether the doses are meaningful. Here's what each ingredient is and what's actually known about it.

The takeaway: Mega Clean's two extra ingredients are mainly about caffeine-style stimulation and energy-drink feel, not about some special toxin-removing power. The bigger practical difference is still volume.

Why do vitamins and creatine keep showing up in products like these? Labs judge whether a urine sample is too diluted partly by its creatinine level and partly by how dense it is (specific gravity). Your body makes creatinine from creatine. B vitamins, especially riboflavin (vitamin B2), can tint urine yellow. Neither one changes the amount of drug metabolite in your body. Our explainer on creatine vs creatinine on a drug test goes into the details.

The volume difference is the real difference

Let's do the simple math, because it explains most of what separates these two bottles.

• XXtra Clean: 20 ounces of drink, then a 20-ounce refill of water. Roughly 40 ounces, a bit over 1.1 liters, in about 15 to 20 minutes.
• Mega Clean: 32 ounces of drink, then a 32-ounce refill of water. Roughly 64 ounces, close to 1.9 liters, in the same time frame.

Both product pages add a "pro tip" of drinking 16 ounces of water every two hours to "extend" the effect through the day. Detoxify also says frequent urination, three to four times, is the sign you've reached optimal cleansing.

What's actually happening is straightforward. When you take in a lot of fluid fast, your kidneys respond by producing more, and more watery, urine. The concentration of anything in that urine, including drug metabolites like THC-COOH, drops for a while. Bigger fluid load, bigger and potentially longer dilution. That's why Detoxify's "high toxicity" drink is simply the bigger bottle. It's also why a heavier person, who has more body water to spread the fluid through, tended to be steered to the larger drinks in older marketing.

There's also a ceiling. You can't safely keep adding fluid forever. Drinking very large amounts of water in a short time can drop the sodium in your blood to dangerous levels, a condition called hyponatremia. More isn't automatically better, and neither drink's directions ask you to go beyond the bottle, the refill and modest water afterward.

Price per ounce, and what you actually pay

On Detoxify's store on November 1, 2026, XXtra Clean was $31.99 and Mega Clean was $39.95. That works out to about $1.60 per ounce for XXtra Clean and about $1.25 per ounce for Mega Clean. So Mega Clean is around $8 more per bottle but cheaper per ounce.

A few things change the real cost:

• Precleanse. Detoxify recommends its Precleanse capsules with both drinks. Some retailers sell bundles; others sell them separately. Factor that in if you plan to follow the full routine.
• Shipping speed. People shopping for these drinks are often on a deadline. Overnight shipping can cost more than the bottle. If you're short on time, check whether a local store carries the brand. Our guide to detox drinks you can buy at the store covers that.
• A home test. A cheap home urine test before you buy anything can save you the cost of a drink you may not need. More on that below.
• Satisfaction guarantees. Detoxify advertises a "100% Satisfaction Guarantee" when you buy direct from Detoxify.com. Read the actual terms before relying on it; guarantees like this usually have conditions and don't cover third-party sellers.

How each drink is used, according to the label

The directions are identical, word for word, on both product pages:

1. Shake the bottle well and drink the entire contents.
2. Wait 15 minutes. Refill the bottle with water, shake and drink.

Both pages then say the optimal cleansing level comes three to four hours after the last step, and to plan for frequent urination. Both say not to "introduce new toxins" during the process and to "watch the clock and drink your cleanse and water at exact intervals."

Detoxify's blog adds some general advice that applies to both: stay hydrated, eat light meals of fruit, vegetables and fiber, and avoid greasy or fried food during a cleanse. It also says to follow the directions exactly, because not doing so "can lead to an inadequate detoxification process."

Notice what the directions don't say. There's no claim that a heavier user should drink two bottles, no weight chart, and no promise about tests. The current pages are written as general "cleanse" products, and both end their FAQ with the same line: "Our products are not designed for tests of any sort."

The Precleanse step

Both drinks are "recommended with 48-hr. Precleanse Supplement." Detoxify's blog describes the routine as one capsule with 16 ounces of water, six times a day, for up to three days before the cleanse, while avoiding new toxin intake for at least 48 hours.

Be realistic about what that adds up to. Six 16-ounce glasses is 96 ounces of water a day, on top of whatever else you drink. The capsules are another herbal product marketed for digestive cleansing. The parts of that routine most likely to make any difference are the ones that have nothing to do with the capsule: not using for a couple of days, and staying well hydrated. Two days off doesn't clear stored THC metabolites for a regular user, but it does stop you from adding fresh ones.

If you have kidney or heart problems, take medication that affects fluids or sodium, or are pregnant or nursing, ask a doctor before any multi-day high-water routine. Detoxify itself says to consult your physician before using its products.

Which one fits which situation

Here's how Detoxify's own "average vs high toxicity" split maps onto real-life use patterns. This is the maker's framing plus general detection-time data, not a promise of any result.

The pattern is clear. The more you've used, the more you're relying on dilution to cover a big gap, and the less likely any drink is to close it. Going from 40 to 64 ounces of fluid doesn't fix a level that's several times over the cutoff.

What the science says about detox drinks in general

There are no published, independent, peer-reviewed trials of XXtra Clean or Mega Clean specifically. What research does exist looks at the basic mechanism these drinks rely on: drinking a lot of fluid.

The best-known study is from 1998 in the Journal of Analytical Toxicology. Edward Cone and colleagues had volunteers drink large amounts of fluid after using marijuana or cocaine and tracked their urine. Heavy fluid intake did push some results below the screening cutoff for a few hours. But the effect wore off, and the diluted samples often showed low creatinine and low specific gravity, which are exactly the values labs check to flag dilution. The researchers also tested some commercial "detox" products of that era and found they worked through the same dilution effect rather than anything special.

That's the core issue with comparing XXtra Clean and Mega Clean. Whatever separates them, both stand on the same mechanism, and that mechanism has known limits: it's temporary, it depends heavily on how much metabolite is in your system to begin with, and it can produce a sample a lab reports as dilute.

How labs spot dilution

A lot of people choose a drink based on whether it will make their urine "look normal." Labs don't go by looks. They measure.

• Creatinine. A waste product from muscle that normally shows up in urine at fairly steady levels. Very low creatinine suggests the sample is watered down.
• Specific gravity. How dense the urine is compared with water. Very watery urine has a specific gravity close to 1.000.

Under the federal workplace testing rules in 49 CFR Part 40, which many private employers copy, a urine sample with creatinine of at least 2 but below 20 mg/dL and specific gravity greater than 1.0010 but less than 1.0030 is reported as dilute. Values even further out of range can be reported as substituted or invalid. A "negative dilute" result is not a clean pass in the eyes of many employers. Policies often call for a retest, sometimes on short notice and sometimes under direct observation. Our explainers on what a negative dilute result means and specific gravity in urine go deeper.

This is the reason drinks include creatine and B vitamins: to make a diluted sample look less diluted. Whether the amounts in a given bottle are enough to matter for your body isn't something anyone can promise.

How long THC actually stays in urine

Because these drinks are mostly bought by people worried about cannabis, it helps to know the typical windows. A 2017 review in Mayo Clinic Proceedings (Moeller and colleagues) gives approximate urine detection times for THC metabolites:

These are rough guides. Real windows depend on dose, potency, how often you use, body fat, metabolism and the test's cutoff. Many workplace screens use a 50 ng/mL cutoff for the initial test and 15 ng/mL for the confirmation test. A classic 1985 study by Ellis and colleagues in Clinical Pharmacology & Therapeutics followed chronic users after they stopped and found some kept testing positive for weeks.

Now look back at the comparison. A detox drink works for a few hours on whatever is already in your urine. If you're just over the cutoff, dilution has a smaller gap to close. If you're far over, no bottle size gives you a reliable answer. That's why "how much have I used, and how long ago" matters more than "XXtra or Mega." Our THC elimination estimator gives a rough idea of where you might be.

Decoding the marketing claims, line by line

Both product pages share most of their wording. Here's what the main claims mean in plain English, and how much weight each one can carry.

None of that means the drinks do nothing. They clearly make you drink a lot of fluid and urinate a lot. It means the precise claims about toxin removal, systems and percentages aren't backed by anything outside the company.

What about nicotine, alcohol and CBD?

Both product pages say the drinks work "on any toxin in your body including THC, CBD, vape, alcohol, and nicotine." Here's the reality for each.

• Nicotine. Tests usually look for cotinine, a nicotine breakdown product. In regular users it often stays detectable in urine for several days after stopping, longer in heavy users. A drink doesn't change how fast your body clears it; it only dilutes the urine for a while. For more, see whether detox drinks work for nicotine and how nicotine urine tests work.
• Alcohol. Breath and blood tests measure alcohol itself, which a drink can't speed up meaningfully. Urine alcohol tests often look for ethyl glucuronide (EtG), which can be detected for up to about 80 hours after heavy drinking. Dilution may lower the concentration temporarily, but labs set cutoffs and check for dilution there too.
• CBD. Pure CBD isn't what standard drug tests look for. The problem is that many CBD products contain small amounts of THC, which can build up with regular use and show up as THC-COOH. That's the same issue as cannabis use, at lower levels.
• "Vape." This could mean nicotine vapes or THC vapes. Each one follows the rules above for its active substance.

So the XXtra vs Mega choice doesn't change by substance. For all of them, the drink's role is short-term dilution, and time since last use is what really moves the result.

What the two routines feel like

People rarely talk about the practical side, so here it is. With XXtra Clean you're finishing about 40 ounces in roughly a quarter of an hour. With Mega Clean it's about 64 ounces in the same time. For many people, 64 ounces that fast is uncomfortable. Expect a full, sloshy stomach, and expect to need a bathroom repeatedly for the next few hours, which is exactly what Detoxify says should happen.

Detoxify describes both as tropical flavored, and reviews of detox drinks in general often describe them as very sweet. If you have a sensitive stomach, the smaller bottle is easier to get down. If you're sensitive to caffeine, XXtra Clean's listed blend doesn't include guarana, while Mega Clean's does.

A few comfort points that apply to both:

• Don't take either on a completely empty stomach. Detoxify's blog recommends light meals with fruit, vegetables and fiber.
• Sip the refill steadily rather than chugging it in five seconds.
• Don't add large amounts of extra water on top of the label directions.
• Plan to be near a bathroom for the following hours.

Body size, body fat and why "average vs high" is fuzzy

"Average" and "high" toxicity aren't measurable categories for an ordinary buyer. Nobody knows their THC-COOH level without a test. So it helps to understand the factors that actually push your level up or down.

• Frequency matters most. Daily use builds up metabolites far more than occasional use, even at the same dose per session.
• Potency matters. Concentrates and high-THC products deliver more THC per session than low-potency flower.
• Body fat matters. THC is fat soluble, so it's stored in fat tissue and released slowly. People with more body fat may stay positive longer.
• Time since last use matters. Every day off gives your body time to clear metabolites. This is the only factor fully in your control.
• Hydration on the day matters. Normal hydration keeps you near your typical concentration. Overhydration lowers it but invites a dilute flag.

Older marketing tied XXtra Clean to "larger body mass" because a bigger person has more body water, so the same fluid load dilutes less. Detoxify now says to ignore weight and pick by exposure. In practice, both factors play a role, but neither is something a bottle can overcome when the underlying level is high.

Reading reviews without getting fooled

Search either product and you'll find glowing reviews and angry ones. A few tips for making sense of them:

• Seller testimonials are filtered. The quotes on Detoxify's pages were picked by Detoxify.
• Forum stories are missing details. A "passed with Mega Clean" story rarely says how much the person used, how long they'd stopped, what cutoff the test used or whether it was a home test or a lab test. Without that, it's not useful evidence.
• Survivorship bias is real. People who were already under the cutoff may credit the drink for a result they would have gotten anyway.
• Failure stories are underreported. People who get a dilute or positive result are less likely to post about it, and when they do, they often blame "not following directions."
• Affiliate reviews have incentives. That includes us. We earn a commission if you buy through our links, which is exactly why we've stuck to facts the maker publishes and research that exists.

When a detox drink is simply the wrong tool

There are situations where neither XXtra Clean nor Mega Clean is a sensible choice, no matter which is stronger:

• Observed collections. If someone watches you give the sample, the whole routine is beside the point, and trying to game it can make things far worse.
• Regulated programs. DOT, federal, court, probation, parole and military testing have their own strict rules. We don't give advice for those.
• Hair tests. Hair reflects roughly the last 90 days of use in a standard sample, and urine drinks do nothing for it.
• Random or no-notice tests. The drinks are built around a few-hour window you plan in advance.
• Health conditions. Kidney, heart or liver issues, pregnancy, or medications that affect fluid balance.

In these cases, the honest options are time, being upfront where that's appropriate (for example, about prescriptions with a medical review officer), and getting support if you want to stop using.

Terms you'll see on detox drink labels and pages

• THC-COOH. The main inactive breakdown product of THC. It's what standard urine tests for cannabis look for, not THC itself.
• Cutoff. The concentration a test uses to call a result positive. Many workplace screens use 50 ng/mL for the first test and 15 ng/mL for confirmation. Below the cutoff is reported negative even if some metabolite is present.
• Immunoassay screen. The fast, cheaper first test. A positive screen is usually sent for confirmation.
• GC-MS or LC-MS confirmation. The lab method used to confirm a positive screen and measure the exact amount.
• Dilute. A result where creatinine and specific gravity are low enough to suggest extra fluid. Many employers treat it as a reason to retest.
• Proprietary blend. A list of ingredients without individual amounts. Common on supplements, and the reason no one outside the company knows the herb doses in either drink.
• Precleanse. Detoxify's capsule product sold as a companion to its drinks, taken with plenty of water before the main drink.
• Diuretic. Something that increases urine output. Caffeine (from guarana) is a mild one. Large amounts of plain fluid have a bigger effect on volume than any herb.
• Medical review officer (MRO). A doctor who reviews confirmed positive lab results and gives you a chance to explain legitimate prescriptions before a result goes to an employer.

Knowing these terms makes it easier to read any detox product page, not just Detoxify's, and to spot the difference between a measurable claim and a slogan.

Storage, shelf life and leftovers

Both drinks are sold as single-use bottles. Each carries a printed expiration date, and like other vitamin-fortified drinks, they're best stored at room temperature away from direct sun and heat. A bottle left in a hot car for days isn't something we'd trust. Once opened, each one is meant to be finished in one go as part of the two-step routine; neither is designed to be split across two days or shared. If you bought a bottle and ended up not needing it because a home test came back negative, keep it sealed and check the date before using it later. And if a bottle looks tampered with, has a broken seal or smells off, don't drink it. Contact the seller instead. These small details sound obvious, but they matter more than any marginal difference between XXtra Clean and Mega Clean.

Side effects and who should skip both

Most people who use drinks like these report the obvious: lots of trips to the bathroom for a few hours. Beyond that, a few things are worth knowing.

• Caffeine effects (mostly Mega Clean). Guarana contains caffeine. If you're sensitive, or you're also drinking coffee or energy drinks, you may feel jittery, anxious or have a racing heart. Detoxify doesn't publish the caffeine amount on its product page.
• Stomach upset. Drinking 40 to 64 ounces quickly can cause nausea or bloating, especially on an empty stomach.
• Too much water. Following the bottle and refill is one thing. Piling gallons of extra water on top is how people get into trouble with low blood sodium. Symptoms include headache, confusion, nausea and, in severe cases, seizures. Seek urgent care if that happens.
• Herbal interactions. Ginseng, milk thistle and uva ursi can interact with some medicines, including blood thinners and diabetes drugs. Uva ursi isn't meant for long-term use.
• Who should avoid both without a doctor's okay: people who are pregnant or breastfeeding, anyone with kidney, liver or heart disease, anyone with high blood pressure who's sensitive to caffeine, and anyone on prescription medication. Both are also adult products.

If you're unsure, the simplest choice is to skip the drink, keep your normal water intake, and focus on time and a home test.

Common myths about XXtra Clean and Mega Clean

• "Mega Clean removes more THC." No drink has been shown to remove stored THC metabolites. Mega Clean gives you more fluid and caffeine-type ingredients; that affects dilution, not how much THC-COOH your fat stores release.
• "XXtra Clean is for big guys." That was older marketing. Detoxify's current pages say weight and BMI don't matter and to choose by toxicity level.
• "Two bottles of XXtra Clean equal one Mega Clean." Two XXtra Cleans plus refills would be about 80 ounces of fluid, more than the Mega Clean routine, and the ingredient mix differs. Detoxify doesn't recommend doubling up, and stacking drinks pushes you toward unsafe fluid intake.
• "If I pee clear, the drink failed." Clear urine is a sign of heavy dilution, which a lab may flag. Color isn't the measure; creatinine and specific gravity are.
• "It works for any test." Both are urine-focused drinks. They do nothing for hair tests and aren't designed for mouth swabs. For swabs, see whether detox drinks work for mouth swab tests.
• "Detoxify guarantees I'll pass." It doesn't. Its product pages say the drinks are "not designed for tests of any sort." The satisfaction guarantee on its store is about the purchase, not test results.

The step most people skip: test yourself first

Before you spend $32 to $40 on a bottle, spend a few dollars to find out where you stand. A home urine test that uses a 50 ng/mL THC cutoff tells you roughly what an initial workplace screen would see. If you're already negative, you don't need either drink. If you're clearly positive with a dark test line missing entirely, you know you have a big gap, and no bottle is a reliable fix.

A simple approach:

1. Stop using now. Every day off helps more than any product.
2. Test with first-morning urine, which is usually the most concentrated, so you see the "worst case."
3. Read the result at the time the instructions give, not later. A faint line usually still counts as negative on these tests; our guide on how to read a home drug test explains why.
4. Retest every few days to track your trend.

TestClear sells marijuana home tests and multi-panel kits. That's the cheapest, most honest step in this whole process, and it often answers the "XXtra or Mega" question for you.

Where to buy, and avoiding fakes

Both drinks are sold by Detoxify directly, by TestClear (the retailer we partner with) and by many smoke shops and online marketplaces. A few practical points:

• Check the seller. Popular detox drinks are copied. Buying from the maker or an established retailer lowers the risk of an old or counterfeit bottle.
• Check the date. Bottles carry a printed expiration date. Don't use one past it.
• Check what's in the box. Some listings bundle Precleanse; others don't. Read the listing.
• Check shipping times honestly. If you need something tomorrow, a cheaper bottle that arrives next week is worthless to you.

Where Ready Clean fits

Detoxify also sells a lighter drink called Ready Clean, which TestClear lists as well. It sits below XXtra Clean in the range. If you're only comparing XXtra Clean and Mega Clean, you're already looking at the two bigger options. The same logic applies across all three: they're variations on fluid, vitamins and herbs, with the bigger bottles pitched at heavier exposure.

XXtra Clean vs Mega Clean vs other brands

People often compare these two against drinks from other companies, such as Champ Flush Out or other "same-day" drinks sold in smoke shops. The honest summary is the same for all of them: they rely on dilution, they add creatine and vitamins to reduce dilution flags, and none has independent trial data. The main things that differ are bottle size, how much extra water the directions ask for, whether there's caffeine, the price and whether there's a weight limit printed on the label. Our review of whether Champ detox drink works walks through one of those alternatives.

If you're comparing on paper:

• Bigger bottle plus bigger refill means more fluid and more dilution potential, but also more bathroom trips and more stomach load.
• Caffeine (from guarana, in Mega Clean's case) adds a mild diuretic effect and a stimulant feel.
• Price per ounce matters less than whether you need the product at all.

Five mistakes people make when choosing between them

1. Choosing by body weight. The maker no longer frames it this way. Your use pattern and time since last use matter more.
2. Skipping the two days off. Both drinks are labeled for use after at least 48 hours without toxins. Using right up to the day defeats the routine.
3. Doubling up. Two bottles, or a bottle plus a gallon of water, isn't "extra safe." It's extra risky, and it makes dilution flags more likely.
4. Ignoring the timing window. Both say the effect peaks three to four hours after the last step, then fades. The routine is built around a short window, not the whole day.
5. Not testing first. Plenty of people buy Mega Clean "to be safe" when a home test would have shown they didn't need anything.

Questions to ask yourself before you buy either

• When did I last use, and how often have I been using over the past month?
• What kind of test is it? Urine, saliva and hair are completely different, and these drinks only address urine.
• Is it a test with special rules, such as DOT, federal, court or probation testing? If so, these products aren't for you, and our site won't coach you on them.
• Have I taken a home test? What did it show?
• Do I have any health condition, medication or caffeine sensitivity that makes a high-fluid, herbal, possibly caffeinated drink a bad idea?
• Would my employer accept a negative-dilute result, or would it trigger an observed retest?

If your honest answers point to heavy recent use, a strict program or health concerns, the best move is to skip both drinks and focus on time, hydration within normal limits and home testing.

A made-up example: two friends, two bottles

Here's an illustration, not a real case and not a prediction. Sam smokes about twice a month and last used ten days ago. Jordan smokes every day and stopped three days ago. Both are thinking about a detox drink.

Sam takes a 50 ng/mL home test with first-morning urine and gets a clear negative. Sam doesn't need XXtra Clean, Mega Clean or anything else, and saves the money.

Jordan's home test is clearly positive. Jordan reads that Mega Clean is the "high toxicity" option and is tempted. But based on typical windows for daily use, Jordan is likely still well over the cutoff, and a bigger bottle doesn't change what's stored in the body. Jordan's most reliable path is more days off, retesting every few days, and being honest about the risk of a dilute result if relying on any drink.

The point isn't that the drinks never matter. It's that the comparison between them is much less important than where you are on the detection curve.

What we'd tell a friend

If a friend asked us "XXtra Clean or Mega Clean?", we'd say: first, why do you think you need one? Take a home test. If you're a light or occasional user who's been off for several days, you may not need anything. If you're a regular or heavy user, be honest that a drink is a gamble on a few hours of dilution, and that Detoxify itself doesn't sell these for tests. If you still decide to buy, Mega Clean is the larger, caffeinated option Detoxify aims at heavier exposure, and XXtra Clean is the smaller, cheaper-per-bottle option for average exposure. Follow the printed label, don't add extra bottles or huge amounts of water, and look after your health first.

Bottom line

Detoxify XXtra Clean vs Mega Clean comes down to size and strength rather than a different method. XXtra Clean is 20 ounces, $31.99 direct, aimed at average exposure. Mega Clean is 32 ounces, $39.95 direct, aimed at high exposure, with guarana and taurine added. Both use the same two-step routine and the same three-to-four-hour window, both recommend 48 hours off and Precleanse, and both rely on dilution, which is temporary and can be flagged by labs. Neither is backed by independent trials, and the maker says neither is designed for tests. The best first purchase is usually a home test, and the best long-term plan is time.

Getting help

If you'd like support cutting back or stopping, the SAMHSA National Helpline is free, confidential and open 24/7 at 1-800-662-4357. If you or someone you know is in crisis or thinking about self-harm, call or text 988.

Sources

• Detoxify, Mega Clean Herbal Cleanse product page, and XXtra Clean Herbal Cleanse product page (prices, sizes, ingredients, directions and FAQ), read November 1, 2026.
• Detoxify blog, "Detoxify's Mega Clean vs. XXtra Clean: Which is Right for Me?" (Precleanse routine, positioning, diet advice), read November 1, 2026.
• Cone EJ, Lange R, Darwin WD. In vivo adulteration: excess fluid ingestion causes false-negative marijuana and cocaine urine test results. Journal of Analytical Toxicology, 1998.
• Moeller KE, Kissack JC, Atayee RS, Lee KC. Clinical interpretation of urine drug tests: what clinicians need to know about urine drug screens. Mayo Clinic Proceedings, 2017.
• Ellis GM Jr, Mann MA, Judson BA, Schramm NT, Tashchian A. Excretion patterns of cannabinoid metabolites after last use in a group of chronic users. Clinical Pharmacology & Therapeutics, 1985.
• U.S. Department of Transportation, 49 CFR Part 40 (dilute specimen criteria used by federally regulated programs and copied by many employers).