Following on from Treetop's post about drug brands and side effects I found this article about hydroxy. I know I am better on Zentiva and that others are better on other brands. I was pleased to see that some medics take this seriously.
Increased Incidence of Gastrointestinal Side Effects in Patients Taking Hydroxychloroquine: A Brand-related Issue?
AMAR SRINIVASA, SOFIA TOSOUNIDOU and CAROLINE GORDON
The Journal of Rheumatology March 2017, 44 (3) 398; DOI: doi.org/10.3899/jrheum.161063