Had been going through Maxim Pep for my AI source and I can definitely say they are highly under dosed. I used to hold their letrozole under my tongue for like 20 minutes just to get any effect at a dose of 1.25mg EOD. That should have shut my Estrogen down hard but never did. Taking PE's Aromasin and getting my latest blood work back, I'll never go through Maxim again. Always be careful of sites that offer deals like 40% off and up. I definitely could tell their stuff worked but would have to really high dose the stuff to come close to what PE has in their products.