Amlodipine
"I have had a terrible time with blood pressure medicine.  I received 25 mg on Hydrochlorothiazide but after lab work my doctor said I was losing too much potassium so he took me off it.  He then had me take Triamterene, 37.5-5.25 mg tablet.  This medicine gave me potassium but also had two diuretics.  I experienced increased bruising and weakness in my legs and cramping in my lower legs that it was very difficult to get out of the pool after exercising.  I am  now taking Amlodipine 5 mg tablet.  My ankles and feet swell up something awful, my legs feel very swollen as well and I have developed a terrible rash across my breasts.  I am a 63 year old female."