Swanson ® Inosine is a dietary supplement designed to supplement the daily diet of adults. The recommended daily dose of the preparation allows the body to receive from 500 to 1000 mg of inosine according to the manufacturers recommendation. The valuable active ingredient is enclosed in a vegetarian capsule with a shell of hydroxypropylmethylcellulose (HPMC), a cellulose derivative. What is inosine? Inosine is an organic chemical compound - a purine nucleoside containing hypoxanthine as a nitrogenous base. Inosine is a precursor in the biosynthesis of AMP and GMP. Its source in the daily diet can be fish meat. Swanson ® Vegetable Capsules can also be a great way to supplement your diet with inosine. Swanson ® Inosine Energy Support is 1-2 capsules per day. A 60-pack will provide up to two months of daily supplementation for every adult, including vegetarians.