The pharmacist reminds you; It depends. There is no difference between synthetic and natural. It depends on your physical weakness. If there is no shortage, don't eat it. Look for the name of the medicine when you buy it. Vitamin e, a health product, is called natural. In fact, nature and synthesis are both a feature and a standard. The management of drug names is strict, and health care products beg to differ, for your reference, but the natural dosage can still be referenced.