Animal Stak 2 - 21 Paks If you're a serious lifter looking to maximize your strength, performance and gains then it's time to consider the new Animal Stak 2. Like all other animal products, Animal Stak 2 is a comprehensive supplement delivered in individual paks. Each pack contains effective doses of patented and proven ingredients designed to help you naturally enhance your own body's ability to produce anabolic hormone levels. Animal Stak 2 also includes DHT blockers and aromatase inhibitors to help your body prevent the conversion of testosterone to either estrogen or DHT. Finally, you'll find select vasodilators to help enhance systemic circulation and deliver these ingredients where your body needs them most.