The difference is too big. The production of drugs must be approved by the State Administration of Pharmaceutical Products, and the process has strict requirements: content, efficacy, including adverse reactions, etc. Must comply with the provisions of the national pharmacopoeia. Jianzihao belongs to health food, which has no therapeutic effect and belongs to food category. Now take a health food approval number of about 200,000. At present, pharmacies buy vitamin products, and salespeople mainly sell health products, which is actually a way to kill the goose that lays the golden eggs and blindfold the eyes with benefits. Vitamin e I suggest you choose natural vitamin e. I heard that "Lion Natural Vitamin E" is good.