I struggled with this prescription, because I believed in the theory behind Saw Palmetto preventing hormonal acne; however, it took a very long time to see results (approximately three months). After month one and mediocre results, I doubled my dosage to 640 mg/day. I purchase Nature's Bounty Extra Strength capsules, because it also contains Zinc. I have not had a single cyst for over one month now. I am amazed that my face is completely turning around from a single supplement. Guys, if you have done your research, and you are sure that your acne is indeed hormonal, this is totally worth it. But, be patient!