Niacin's effect after smoking marijuana?

I've heard that using Niacin will flush a person's system to the point that it rids the body of THC. Is this true? I smoked pot 3 days ago, and just found out today that I have to take a drug test for my promotion. Also, how long will THC stay in my body without the aid(?) of Niacin?

Without the aid of some product it will take about a month to get out of your system. My buddy took Niacin before he went into the Air Force and he passed. You are supposed to drink a lot of water for each pill. Like a gallon per pill. Be sure not to drink too much water. It will kill you!

shouldn't of smoked in the first place and shouldn't be talkin bout it on yahoo either

THC is water based and usually passes within 3 days of smoking. You will be fine without niacin.

Niacin will make you uncomfortable and hot and red, dont take it unless you have to.

It won't help, that is a myth. The best option is to get synthetic urine. Thc stays in your fat. The amount of fat you have will affect how long it stays in the body. If you're skinny and not a chronic smoker, you'd probably be able to pass in a week. Do a search for "#1", it's a synthetic kit.

I depends on your metabolism as far as how long it takes to get out of your system.
Myself, I quite 3 yrs ago because its not worth losing everything for a buzz.
I tell you like I told my brother on thanksgiving. STOP! THEY WILL CATCH YOU EVENTUALLY! WHATS MORE IMPORTANT! MONEY OR GETTING HIGH!
In answer to your question, keep drinking lots of water every day until the test. By the time your test comes up, you want your urine to be so clear you could drink it on ice and not know it was urine.The morning of the test get some certos and put it a non-alcoholic beverage of your choice. Certos will coat your kidneys and block the metabolites from being released. About 1 hour before the test drink another round of a full pack of certos.
I used to take granulated bleach and stuff it in the head of baby maker. Nowadays they check for contaminants so dont do it.
After the shot of Certos take a cap full of bleach in water and drink it. When the bleach hits your bladder it will clear all the extra muck that will nail you.
Recap... Drink plenty of water. Morning of the test drink Certos. 1 -1 1/2 hrs before the test drink another round of Certos then drink a cap full of bleach anyway that suits you.
Trust me... Dont use Niacin except for maybe an addition to this process. I've seen many fail trusting Niacin alone. Goodluck and once again... Quit...

Niacin doesn't work like that. If anything it would make it worse. THC is stored in the body fat niacin is going to consume. Beside that, niacin burnout is really uncomfortable. The more body fat you have, the longer the THC says in your system. The more you smoke, the longer it stays in your system. If you drink too much water you'll get flagged for trying to beat the test. Besides that, it is really hard to get the parts per down low enough to pass if you smoke regularly. I wouldn't hope you are smart enough not to use any method that means you'll be drinking bleach water.