question: I live in Canada - a recent blood test reveals I m borderline in my potassium level 3.3 (range 3.3 - 5.1) I m a senior 79 years old - only medication is a water pill 2.5mg daily for blood pressure problem - last reading 130/78 and an adult coated aspirin 81mg taken daily. My doctor has suggested I take 1 x APO-K - Potassium Chloride - Slow-Release 600mg tablet daily - I would like your opinion.