If a physician received money back from a drug company it would be called a kick-back and subject the physician to sanctions or loss of a medical license. Yet some vitamin companies get away with this practice. This area of medical practice has not come under review. There is nothing wrong with physicians selling vitamins, orthopedic aids, medicines, eyeglasses, or any other medical devices from their offices, but they must comply with ethical business codes. Many patients enjoy the convenience of purchasing items at their doctor's office.
Some physicians help their patients save money by making items available at nominal cost.
Beware cautious when therapists suggest they are the only source of treatment. For example, the medical literature indicate acupuncture may be helpful in some eye conditions. Acupuncture is widely available from certified acupuncturists across the country. There is no need to travel across the country to receive acupuncture for the eyes. Check on the background of the therapist you choose.