@maggie76 I've just turned 80 and my health has been turned upside down in a 3 month period. Just to focus on the Hyponatermia--I had never had any kidney problems until I had an emergency heart cath in late August of this year. Three days later I was admitted to ICU for congestive heart failure, blood clots in my lungs and hyponatermia. I was prescribed UREA and initially took the powder but have since ordered the caplets. I actually have to grind the pills up to make powder as they are too large to swallow. Do you order from amazon or the company? The company I use is a little cheaper than Amazon. Did your insurance pay for the UREA? I've paid out of pocket so far and it's not cheap. I had my doctor sign that it is medically necessary that I take it and I'll send statement and invoices to the insurance co. to see if they will respond favorably. I see my nephrologist tomorrow. My chemistry results from test on Wednesday are in normal range. However there is a test eGFR CKD-EPI is 53 and reference range should be greater thank 91. Also a test eCrCl shows results "NA." It should be 30-120. I look forward to hearing from you.