Simple. Natural. Proven. MYOS uses a single, all-natural ingredient called Fortetropin®. No additives or artificial ingredients. Fortetropin® has been shown in multiple clinical studies to accelerate gains in muscle mass, improve mobility and enhance recovery from injury.

Veterinarian Recommended. Veterinarians reported that older dogs engaged in more physical activity after consuming Fortetropin® and resumed certain activities that were thought to have stopped because of age.