Can you take a combination of melatonin benadryl Sudafed?

Combining melatonin, Benadryl (diphenhydramine), and Sudafed (pseudoephedrine) can be risky and is generally not recommended without consulting a healthcare professional. Melatonin is a sleep aid, Benadryl is an antihistamine that can cause drowsiness, and Sudafed is a decongestant that may cause stimulation. Taking them together could lead to increased drowsiness or other unwanted side effects. Always consult a doctor or pharmacist before mixing medications.