Any one out there try promatrix Testobol or heard any good news about it. If so comments or knowledge would be appreaciated about it. Please no b.s. ............................. p.s. Do all of these testostorone inhancers cause nut shrinkage if not which ones dont. Just trying to increase my testostrone level is all being 43yrs old its tough to keep it in line. working out 4 days a week you need all you can get at 43. dont much care for zma for increasing natural testostorone. any other options thanks. Tear. It. Up. Mad Dawg!