Doctors are divided because some of the theories behind homeopathy don’t line up with the principles of chemistry and physics. Scientists argue that a medicine with no active ingredient shouldn’t have an effect on the body.Research is mixed. Some studies show that homeopathic remedies are helpful, while others don’t. Critics chalk up the benefits to the placebo effect. That’s when symptoms improve because you believe the treatment is working -- not because it really is. This can trigger the brain to release chemicals that briefly relieve the pain or other symptoms.Don’t use homeopathic medicine for life-threatening illnesses, like asthma, cancer, and heart disease, or in emergencies. You should also avoid using it in place of vaccines. Some homeopathic products called “nosodes” are marketed as an alternative for vaccines, but there’s no research to prove they’re effective.You can also buy over-the-counter homeopathic remedies at drugstores and health food stores. The dosage and quality of these products depend on the manufacturer.During your appointment, a homeopath will ask a number of questions about your mental, emotional, and physical health. They’ll prescribe the remedy that best matches all of your symptoms. Then they’ll tailor the treatment for you.