I have poorly functioning kidney and want to take phentermine.
Is this ok?
There are no data to suggest that phentermine is contraindicated in patients worth renal failure. Best advice, speak to your kidney doctor. However, I think if you take it for a short time (1-3 months), there should be no problem. Get your renal function monitored regularly. Make sure you walk, as the pill will not work if just sit on your couch.
