You talking test boosters as in Alpha? I tried them on a 3month run. I thought overall I could tell a difference. Vitality was the biggest thing I noticed. Other than that, maybe just the feel good endorphins.
Though at 47 I would be interested in knowing of any over the counter test boosters you guys have had success with.
EDIT- Thanks for the shake after dinner thing Git. I can't put wt on even you were on my back.