slu pp332

I'm interested in trying SLU PP332 for endurance purposes. I was thinking about taking two capsules a day. Each capsule is 250 mcg. Do you think this would work for me? I'm 45 years old and I'm in bad shape. I'm trying to get back into the way I was when I was in my twenties.

Do you think using SLUPP332 is too expensive if I was to go with 500 mcg a day? Or do you think that would be a sensible dose? It seems like a bottle would only last for 20 days. I want to make sure I'm running the right amount. My goal is more endurance.