Excellent product - tried it over a two-month period (also combined it with "Real Build", apparently from the same company) and saw great results in terms of energy level after the first 2 weeks.
In parallel, I would also recommend following a "detox diet" to help the body's immune system.
I have been advised by my MD about prostabel and the results were very positive. It took a little time but at the end it was really worth it. Learning the mechanisms of that product was also fascinating, so thank you !