Sat-03-12-2016, 23:54 PM
For what it's worth, I used Acitretin and didn't have a problem with brittle nails. My nails have always been fairly strong and fast growing and I didn't notice any difference. As others have said, it could be the psoriasis causing it and not the medicine but it is worth mentioning that "weak nails" can be a side effect of Acitretin.