I've been prescribed a capsule called "MeScarMin-OD" which is a combination of mecobalamin 1500 mcg, vitamin B6 100 mg, vitamin C 200 mg, and folic acid 5 mg. I'm suffering with diabetes and have pain in the arms, shoulders, and legs. Though I'm taking this medication, I somehow don't like a product that is from an unknown company. Is there an alternative for this medicine for a good company? Thank you.