Can i have hyperkalemia while taking losar-a? I started this med 2 weeks ago n started having some side-effects, like weakness, abdominal pain, heart, palpitations.. I consulted my Doctor Who said that these are minor side-effects, which will go away on their own, but on my insistence, he did an ECG, which did not show evidence of high potassium- no tall t waves I want to know whether I should go for potassium blood test or not? I don't have any kidney disease, except for a small kidney stone.