Can diet pills be taken with prescribed medication? Due to my medical problems I find it hard to lose weight, I m tired all the time & sometimes feel hungry shortly after eating. I had a blood test last week & all tests came back normal. I have heard of a product I d like to try but don t know if it s safe to take. It s called Chocolate Banana Thermite - Acai Berry & Caffeine or Chocolate Banana Schizandra Berry Extract & Caffeine. All ingredients are herbal . Any help would be gratefully appreciated, Barbara. Back & joint problems. Pain, swelling & limited movement, for which I take: - naproxen 500mg twice a day, co-codamol 30/500mg 3 times aday, quinine sulphate 300mg, amitripyline 10mg, ropeinrole 3mg,occassionally tramadol 100mg.