Will niacin clean my system of THC in 3 days?

if you have been a constant marijuana smoker for 2 years it will probably stay in your system for longer than 30 days

too late dude. The niacin does work, but it only cuts down a month to about 2 weeks. I use it all the time. But you need more then 3 days. If no one is watching you , try synthetic pee or getting some from a clean person. It has to be the right temperature. Get the hand/boot warmers from the sporting goods store and tape it to a condom full of clean pee and tape it all to your leg.

No, it does not work.

If they are doing a pee or blood test - the marijuana stays in your sysmtem for 30 days, no matter what. If they are doing a hair test - they can tell up to 6 months and there is nothing you can do to beat it.

If it is a pee test, you can buy a detox from your local smoking accesory store, but it’s very expensive. Usually 60 dollars for a bottle. You have to drink the stuff3 hours before you go take the test, and drink water with it also. It will keep your system clean for up to 5 hours.

First off id like to say that mandyloo up at the top there is a complete and total moron!And Secong of all niacin DOES WORK. Who ever says otherwise is uterly stupid. I have used niacin several times. however as Dr cook76 said it Deffinatly Works but it only cuts down the cleaner speed… niacin is a dietry suppliment that burns your fatty cells. and that is were all the thc that you smoke stores…I have been smoking pot 3yrs and everytime I’ve taken a drug test I’ve popped clean. the best way to get it out is pop two niacin and throw on some swet pants and a hoody… do up down commbined with push ups. for thirty mins straight… this should get the sweting process a go. then go run 3-4 miles by the time this is done and if done properly you will have swet out about 6 pounds. physical condtioning is key to cleaning yur system.. I used to be a wrester and this was the best way to lose weight… I also found it the fastest way to clean my system. also spit while your running helps too. my biuld is 5’7 178 pounds 11.3% body fat.

Take It From Me Been There Done That

Also for better results it is good to pop a aspin about 2 hrs prior to testing it also helps cover up.

Hope This Is the best answer yet :)

I know it works,

well I had a drug test for pepsi and they did a hair sample and your hair is known to go back 10yrs but anyway I took the niacin pills 2days before I had to go an past with flying colors that $15.75 an hour came in handy thanks pepsi and another way I know that they work they took them outta the gnc stores for a while and took the drinking solution out of gnc stores cause they found out what people was using it for.

It says it will but I have witnessed that taking 5 tbsp of baking soda and pouring it in an 8oz glass of water and drinking it will flush you in 3 hours!

WOW PEOPLE ARE DUMB. Yes I believe it works because it worked for me! I had smoked 4 days before my test and it came out clean. I would just take one niacin in the morning and one at night for 3 days if you can. ALONG WITH LOTS AND LOTS OF WATER! Beer also works too, stay away from fatty foods and sugar (fruit is bad too). Also I would suggest using clear cleanse, you drink the 16 oz of this the day of your test, (DO NOT EAT BEFORE DRINKING) then drink 16 oz of water, and then you are ok to eat. Then you must pee 5 times before your actual test. If your pee is clear take a vitamin (because a lot of place will not take clear pee). Another thing is (DON’T TAKE ANY Medicine because this can show up as other drugs or tonic water)