AniMed Mag-Right is a proprietary blend of magnesium oxide combined with magnesium proteinate. Magnesium is a required micromineral for horses as a major constituent of bone and muscle. Can also serve as a necessary co-factor in many body processes and participate in muscle contractions. Should be supplemented to horses with magnesium deficiency, or which require supplemental magnesium. 
\nEach Tbsp contains 25,000 mg magnesium.