Sinemet (carbidopa-levodopa) 25/100 immediate release (IR) tablets contain a yellow dye, D&C Yellow #10 Lake.  Per the prescribing information, rash is a possible side effect (1). There are a few case reports to support rash as a possible side effect in two publications.   The first paper to cite this effect noted five patients who experienced … Continue reading Immediate release carbidopa/levodopa 25/100 can cause allergic skin reactions