Hi thanks for asking question. Noted you have normal USG and negative viral marker hepatitis test. So fatty liver and hepatitis like condition here not present. Usually protein supplement and multivitamin have no side effect in liver. But according to few articles your supplement should not contain dimethylamylamine or any metal as they can be injurious to liver. Liver also elevated in heart attack.So rule out if having history of that. Myositis like muscular problem or celiac disease like malabsorption syndrome can lead elevated liver enzymes. I hope my answer will helpful to you. Take care... Dr.Parth