I’m 20 days post op and I was wondering would red diamond unsweetened iced tea be safe to drink I cannot figure out for the life of me if it’s decaf or not so sorry if I sound stupid

If it doesn’t specifically say decaffeinated you would expect it does contain caffeine. You could email the company & see if they respond.

Black tea does have caffeine, though usually less than a cup of coffee. If your plan restricts caffeine, look for a decaf option, which they also sell.