Are there any older athletes here who have [legitimately] used TRT or peptides?
Not me and I am one of the older ones here at 67 (and soon to be 68). I believe TRT is testosterone replacement therapy. If that's right, I have no idea what my level is, and at my annual physical exam, my doctor has never mentioned it to me.
Peptide? A school spirit rally held oceanside? Related to Pepto Bismol? All kidding aside, I've heard the term in the past, looked it up, and if memory serves, it seems to be frowned upon.
The only difference I've noticed in getting older thus far has been that I'm able to do lifting that would have caused me to get hungry and put muscle on me in the past, and it doesn't make me hungry. In every other way, I'm as good as I ever was so far as I can tell, and I keep getting stronger.
Supplements? Vitamins - multi-vitamin every day, and I take potassium and magnesium because I get muscle cramps if I don't, something I attribute to the fact that I eat a whole lot less than I used to and I don't really care for either fruits, or vegetables except cooked, mushy ones. I also take Vitamin D. Lately, I've been experimenting - in large part because of things I read on this forum - with supplementing Vitamin C also.
Medicine? I grew up a very sickly child, and sometimes when I get a cold, I take Mucinex DM, which is a cough suppressant and expectorant just to help me break the cycle of inflamed sinuses that I can fall into. That's maybe once or twice a year. Nothing else, no prescription medicines, no regular use of ibuprofen/naproxen/aspirin.
I'll give you my shoe size and blood type if you want.