Can You Take Armodafinil and Melatonin Together?

Dose or timing may matter

The short answer

Armodafinil promotes wakefulness by modulating dopamine and histamine systems, while melatonin promotes sleep. They have directly opposing pharmacological actions that may reduce each other's effectiveness.

How to arrange timing

Take Armodafinil early in the morning and melatonin at bedtime. Separate by at least 12 hours to avoid pharmacodynamic antagonism.

Reference

Reference noted for this combination: Minzenberg MJ, Carter CS. Modafinil: a review of neurochemical actions and effects on cognition. Neuropsychopharmacology. 2008;33(7):1477-1502.

Important context

Whether supplements suit you together also depends on dose, product formulation, health conditions, and medication use. Ask a doctor or pharmacist first if you take medication, are pregnant or breastfeeding, or have a chronic condition.