In addition to hands on adjustments other drug free pain relief techniques are often used by chiropractors:

Massage: Kneading and rubbing muscles stimulates blood flow, relieve tension and improves function.

Ultrasound: High frequency sound waves generate heat below the skins surface breaking up tissue deposits.

Electrical Stimulation: An electric current is used to tone muscles, stimulate healing and ease pain.

Transcutaneous electrical nerve stimulation (TENS): An electronic device sends an electrical current through electrodes taped to the skin to nerves at the site of pain.  To stop pain messages from being transmitted to the brain.

Heat: Hot packs provide moist heat that increase blood flow and eases pain.