Prilosec....
It can most definitely affect absorption !you have to make sure that you take the spiro at least 2 hrs- before or 2 hours after Prilosec. If you only take one dose of spiro a day then have that on the opposite time of day as yiur Prilosec. Another thing is, some people can manage with Prilosec once every other day. I do, so speak to your dr about that possibility. Particularly if you start coming up with vitamin and mineral deficiencies like anemia.