In the hands of a well-trained practitioner acupuncture is safe and effective. Acupuncturists are thoroughly trained in safety standards and are license tested for precautionary conditions. Acupuncturists are trained and certified in Clean Needle Technique, which includes gas sterilized and prepackaged disposable needles, preventing transmission of blood-borne pathogens, disposal of contaminated waste, and other methods to ensure patient safety.
The World Health Organization endorses and reviews the efficacy of treatment by acupuncture for a long list of conditions. They have recognized acupuncture to be a gentle therapy even though minor side effects are possible, such as light-headedness. Any side effect should be discussed with your practitioner.