Testosterone the way to go.
Supplements are bogus. If Viagra, Cialis, Levitra doesn't work for you. Go to the best thing ever. Hopefully you have a good doctor that will help you out. Have him check your Testosterone level. If it's low, ask him to prescribe some for you. Don't even waste your money on boosters, pure Testosterone will make you "Young Boy" again. You'll feel stronger and physically more active.
200 mg a week is good. Wake up every morning with a rock hard boner again. Testosterone shots are 100%. Any other type, pills, gel, will only be 40-60% effective. Tried 300 mg once, I felt like a rapist! Had to lower to control. Again ask your personal doc, not some shitty male clinic. Hopefully he'll help you out.
GL.
Flesh.