Hey SSC.
The only side effects I experienced from the biotin was periodic pimples. However, I am certain it was due to the high dosage I was taking because now that I'm taking it as directed, I don't get them anymore. I also take the B-complex, flaxseed, and Oil of Olays vitamin with antioxidants...need that to preserve my old skin
But, other than that, all is well. The biotin had DEFINATELY thickened my hair. It's thicker now in my 40s than it was when I was in my 20s
I love it and have a cupboard full of it...okay, maybe not full, but like 3 or 4 bottles
I'm not sure of the side effects you were referring to, but maybe those listing them were taking too high a dose too...I don't know. But, I guess I should answer your question, I'm not taking the B alone
Hope someone can answer your question.