For those wondering how to use it effectively (unlike what a lot of these bozos are saying in the comments)

I was on color code (basically probation) and smoked a few blunts of loud the night before I had to test (wasn’t expecting to test the next day). I drank this with a good bit of water a few hours prior to test and passed. Definitely wouldn’t recommend smoking on probation but thankfully this stuff worked a miracle for me

Edit: just wanted to say this drink works! I had my test at 12pm today 4/7. Drank it around 9:30am and finished both bottles by 10:30am. Pissed 3 times , tested myself on the 4th time and I was good. Pissed again , and then pissed a 6th time at the testing site. Came home , tested myself again and was still negative. Thanks Qcarbo!!!!

Had an interview today and was required to take a drug test to get the job, proud to say I got the job

I’m 6’2 200 pounds and I drank the 16 oz and it worked like a charm. Drink lots of water along with it and you’ll pass I held it in till my 5th stream and I was good to go!

6”4 260 and IF YOU FOLLOW INSTRUCTIONS IT WORKSSS!!! I drank it at 11:20pm and tested with at-home test kit from Walgreens and NEGATIVE ASF I STOPPED SMOKING A WEEK BEFORE JUST TO BE CLEAR AND I DRANK A LOT OF WATER AND CRANBERRY JUICE 7 DAYS BEFORE I DRANK THE qcarbo… GOODLUCK

This review made my day! Your positivity is contagious

Just to confirm , THIS STUFF WORKS. I quit smoking two weeks beforehand, I actively work out as well, maybe 2 times a week. I drank this stuff the day before my drug test, maybe 10-15 hours before my drug test. I threw this up , but I drank the rest and filled it up two times. I was a heavy smoker literally , and my results came back negative which was shocking to me. I weigh 140, in 5’7. I also eat pretty healthy but not perfect but I stppped eating out and sugar turning those two weeks as well. Good luck

This works if you use it correctly if you’re overweight you will want to get the 32 ounces if you’re under weight you want to get the 32 ounces.. I wouldn’t even pay 16 ounces no mind.. if this is your first time be careful you may throw it up so sip slowly but sip it all in 45 min to an hour to. I actually smoked a blunt at 4 AM my test at 12:30 started drinking at 8:30 .. in 24 hours I weigh 120 pounds my dad weighs 230 pounds we do the same process we both passed every single time… just follow directions and drink as much water to help you peee i drank 5 bottles of water during the cleanse pee about 4-6 times then took my test the same way every time. No I don’t cleanse because yes I smoke hours before. I wouldn’t trade this drink for the world lol !

This drink does work I'm actually drinking it now. I smoke so much the qcarbo32 oz is what I get but it hasn't failed me yet

He's not lieng I've been passing my DOT test for 8 yrs now what also helps is take niacin and kidny flush the night before and do not eat anything until after your test best results !! No bs!!

Ok here's the deal. It works perfectly to help pass a drug test and that's what it's made for. You must drink lots of water that's key. I mean you must drink a few gallons of water before drinking the bottle. Start about 6 hours your test. I recommend drinking at least a gallon or two before you drink the contents of the bottle. After the second gallon of water your piss should be crystal clear. Approximately 3 to 3 and a half hours before test drink the entire contents of the bottle. Follow with another gallon of water. You'll be pissing to alot and it's important to piss at least 2 or 3 times after you drink the bottle. After you drink the bottle you'll notice that your piss has become darker and looks like it's not water anymore. That's how this stuff works it puts everything back into your system so the test doesn't come back diluted . That's just as bad as a positive result. The whole key is to drink a shitload of water and piss at least 2 or 3 times after you drink the bottle and before your test. Also don't give the sample at the beginning or end of your piss . Take the sample about half way before you empty your bladder. WATER WATER WATER lots of it and take the test between 3 to 5 hours after you drink the bottle and you'll definitely pass without a problem. Works for me everytime. Good luck

This drink worked for me! I passed my pre employment drug test and got hired. I purchased the 16oz bottle.

It definitely worked for me, drank 1 bottle a few hours before (smoked the day before) and passed the test…. Just looking at the reviews because I’m about to use it again.

It's beyond fucking ridiculous that we have to do this just over fucking weed.

I've used this multiple times to pass piss tests I'd drink the bottle and do like he said refill the bottle w water but I refilled it about 2 or 3 times and I passed my test didn't need gallons of water just what it says to use on the bottle it's like 32 or 64oz planning to use again I'm about a wk for a job it has never failed me in the past only difference now is that I been using concentrates hopefully it works like it has in the past

It works immediately 2nd piss should be clean. Take like a hr b4 ur test. Youll see difference in piss.

Just took my test, didn't eat all day and tested at 3pm. Took the drink at noon, drank about 64oz of water, peed about 5 times before the test. Will report back if it worked!