10 Best Weight Gain Supplements For Horses 2025 in the United States

The Manna Pro Weight Accelerator for Senior Horses is specifically designed to help older horses gain weight and improve their body condition. This supplement boasts high levels of fat and calories, which are essential for weight gain. Notably, it includes Omega 3 Fatty Acids from flaxseed, which support healthy skin and coat, making it a multipurpose product. Additionally, the formulation contains probiotics for better digestion and biotin for hoof growth, addressing common health concerns in senior horses.

Essential vitamins and antioxidants included in the mix help in boosting the immune system, which is crucial for older horses. One of its main strengths is its palatability, ensuring that horses are likely to consume it without fuss. The inclusion of active ingredients like ascorbic acid and vitamin E further enhances its nutritive value. However, while it's noted to be highly palatable and easy to feed, it’s essential for users to monitor the horse's response to the supplement.

The product is suitable for all breed sizes and life stages, although its main target is senior horses. Potential users should consider the substantial packaging weight, as the 8-pound size could be cumbersome for some. This supplement shows indications of positive outcomes, but always consult with a veterinarian before beginning any new dietary regimen for your horse to ensure it suits their specific health needs.

The Purina Amplify Equine High-Fat Horse Supplement is designed for a variety of horses, including those in maintenance, breeding, and performance. One of its standout strengths is its high caloric content which is beneficial for horses that need to gain weight. The presence of added antioxidants, including Vitamin E, helps address the harmful effects of free radicals, potentially improving health.

It also features an optimal fatty acid profile to support the immune system and promote a healthy skin and coat, which is a significant advantage. Additionally, its calorically dense formula with controlled starch means you can feed your horse less while still providing adequate nutrition, making it cost-effective in the long run.

The supplement is a powder form and comes in a 50 lb bag, with a rice flavor which should be palatable for most horses. It is suitable for all life stages, making it versatile for a wide range of horses. However, at 54 pounds, the product is quite heavy and might be cumbersome to handle. Therefore, it is recommended to consult with a veterinarian to ensure it meets your horse's specific dietary needs.