Taking quercetin with cyclosporine might increase the effects and side effects of cyclosporine. Medications changed by the liver (Cytochrome P450 2C8 (CYP2C8) substrates) interacts with QUERCETIN ...

Taking too much can cause side effects like nausea, headache, dizziness, and, in some cases allergic reactions. Everyone needs vitamin B12, and most people get enough through their diet.

Melatonin may improve sleep, eye health, and seasonal depression. It’s safe and has few side effects, but is not recommended for children. Melatonin is a common dietary supplement that has ...