The therapeutic efficacy of Lamotrigine can be decreased when used in combination with Nafcillin. The metabolism of Ergoloid mesylate can be decreased when combined with Atomoxetine. The metabolism of Selegiline can be decreased when combined with Armodafinil. The antihypertensive effect with chronic dosing is not usually accompanied by reflex tachycardia. Experimental and clinical findings]. Himcolin Gel strengthenes and sustains erection.