I haven't ever taken AZO myself but I have a few friends that have done it. You take it as directed, which I believe is 2 pills, 3 times a day. You don't need to increase the dosage. Take it for at least 3 days but stop taking it 20 hours before your drug test so that it will not be in your system.

AZO doesn't mask the THC. It's a urinary tract infection medication so it helps to cleanse out your system. It also helps to drink lots of water and to get off the couch and be active.

Let me know if what your results are . . . it's worked for all of my friends who have tried it. Good luck!