I have had a good experience with Actavis generic finasteride via Costco. Actavis has been acquired by Teva, so I am assuming the pills I am taking are trustworthy and effective. Years ago, I had dabbled with Dr Reddy's generic finasteride out of India and had a *horrible* experience within about two weeks of taking it. Scalp was itchy and tingly and hair was pouring off my head in alarming quantity. I got back on Propecia branded finasteride 1 mg daily, and for the last 3 years had good results. I've heard good things about Teva, so I'm trying the Teva / Actavis version through my local Costco. (Some locations use other generic versions, so be aware of that.) One month into my "experiment," my hair is holding steady the way it was with Propecia. **THREE-MONTH UPDATE** All continues to be well. The Actavis generic (a US pharma acquired by Teva) from Costco is working just as well for me as the brand name Propecia did previously. As with Propecia, hair loss has been minimized and become impercetible, at least in my judgement.