GNC products always deliver. And this one, indeed does! I had super bad hairfall 2 years back.. I was kinda depressed coz my dog passed on.😣 Add to that, I was later on diagosed with a chronic condition.😢😭 My hairfall mind you was like more than 200 hairs in a 24 hour period(those I counted, imagine those I have missed)😣. My derma told me to count(150 strands daw in a 24 hour period is even okay). So there. I took this once a day until I finished my first bottle. I saw results, but, not that drastic though. I believe 2 tabs a day is best. On the end of my 2nd. bot, I can say I was shedding less than 150 hairs in 24 hours. Thank heavens and GNC for that🙏🏼.. For those with hairfall exceeding the 150 normal count, I highly recommend this. For those naman who are shedding way, way more.. Stress can be a trigger.. Depression, an underlying medical condition, recent illness, and the likes, you may take this also. But, your doctor might recommend you something else too to go with this. Our hairfall is sometimes a sign that something is wrong in our body. By hairfall in this context, I mean hair falling from the roots---not the ones that fall out of breakage. Hope this helps!😁 BTW, I'm on the waiting list for this biotin. For my mother this time. 🤣