<s>[INST] greetings from new Zealand. I am an 80 y.o. retired American r.n. now living here. I take one 180 cilazapril q 12 hrs. and a magnesium supp.and mineral salt. (pink salt from the Himalayas) b.p.. stable at 140/90-120/80. no edema s.o.b. etc do not take a diuretic. urinary output adequate. mild puffiness under eyes. some twitching of muscles while lying in prone position. I wonder if I have a potassium/magnesium imbalance.thanx for your help. stay healthy. [/INST] Hi, I observe you have two complaints mainly. Mild Puffy eyes and twitching of muscles while in the prone position.  With age, the kidney function decreases and if you have blood pressure or hypertension, it add-ons to it and speed up the process.  As for twitching is concerned, it is usually associated with calcium levels in the body.  Potassium levels usually affect the heart conduction system and magnesium levels may cause muscle weakness and jerky movements.  Therefore, it is advisable to go to a physician and do your RFT and Serum Electrolyte levels with Serum calcium and magnesium.  Hope I have answered your query. Let me know if I can assist you further. </s>