Cleanse system of marijuana...niacin and pot. gluconate?

Ive heard that taking 2 500mg pills of niacin with 1 250mg pill of potassium gluconate near dirnking lots of water and cranberry juice will cleanse my friends system? is this correct?
ive known ppl to use niacin to clean their system and it worked but they took similar to 5-10 pills a day for like a week...but i tried 1 500mg pill one time and i get really really hot,my whole body turned red,realy flushed and shaky...i would drink lots of water and receive water pills so he can pee alot and dilute his urine.
They make a liquid cleanser that you can usually find at head shops. You can take niacin as capably, but it might make you sick. If you are doing this to get tested prior to employment, beware that the drug experiment may come back as diluted, rather than verbs. In some instances, the test facility will tell you to come put a bet on at a later date. In most cases though, if the test comes backbone diluted, they know that you tried to cleanse and will fail you. You best bet is to stop smoking at least 2 weeks up to that time you have to be tested, 3 weeks just to be past the worst. Or just do coke instead, its out of your system in approaching 3 days. ive known ppl to use niacin to clean their system and it worked but they took similar to 5-10 pills a day for like a week...but i tried 1 500mg pill one time and i get really really hot,my whole body turned red,realy flushed and shaky...i would drink lots of water and receive water pills so he can pee alot and dilute his urine.
Answers:    Yes but the niacin is gonna put together him feel like he's standing on a military camp fire.
Milk Thistle along with a blood cleanser you can grasp at the health food store