@maylbee I use a multi vitamin supplement called Rena-Vite, manufactured for Cypress. There is no iodine in it. It is presented in bottles of 100 tablets. I get 3 at a time from Amazon, and have been using them for 2 years, on the advice of my nephrologist.

Vitamin C, Thiamin, Riboflavin, Niacin, Vit B6, Fosgate, Vit B12, Biotin, Pantothenic Acid, and a bit of Calcium

Hope this is something you can use!
Ginger