Biotin, 600 mcg, 100 capsules

I've been taking one capsule each morning for about three months now, and my nails are definitely growing in harder and less prone to splitting. The 600 mcg dose feels gentle enough that I haven't had any stomach issues like with other vitamins I've tried.

Finally a biotin supplement that doesn't make me gag—the capsule is small enough to swallow with just water. Three weeks in, my skin around the cuticles looks smoother and I can see new baby hairs coming in along my hairline.

I’ve noticed my nails are splitting less since I started taking this with breakfast, and the capsules don’t leave any weird aftertaste. The 600 mcg size is perfect for me, no need to cut anything in half.