If properly performed, acupuncture does not cause pain. The needles are very thin and small and you may feel little to no sensation of pain. Most clients report feeling either relaxed or energized after a treatment.
There are many regulations and precautionary measures in place to ensure that only licensed professionals practice acupuncture, with sterile, nontoxic needles. The United States Food and Drug Association (FDA) has approved the use of acupuncture needles by qualified Acupuncturists.