Muscle Fuel 5.0 / 5 Independent Feedback based on 8 verified reviews. Kimberly Attard 4 months ago. very good and effective, it gives energy to the horse. Trusted Customer Brilliant product. My horse's topline has never looked so good. Trusted Customer Started to see a difference in my youngster Ms Lorraine Holloway 7 months ago. It is easy to use and has assisted in rebuilding muscle Ms Lorraine Holloway 8 months ago. An excellent product and has been beneficial helping my horse rebuild lost muscle Mr Gordon Kendrick 9 months ago. Excellent product.Improvement shown already. Trusted Customer Excellent Trusted Customer I love this product! It has really helped my Thoroughbred to build topline and muscle, I'm so pleased! I will definitely continue to feed the supplement now to help him develop further.