I've been prescribed Twynsta 40/5 (which is Telmisartan and Amlodipine besilate and puts both meds together in one tab.) Problem is I still have some Micardis (Telmisartan) 40 mg left from my earlier prescription so I was wondering if I can just buy some Amlodipine 5 mg and take those two stand-alone drugs to finish my stock?