The Effect of Acupuncture Treatment for the Low Back Pain Patients with D-Phenylalanin (DPA) Preadministration (II) / 全日本鍼灸学会雑誌

ABSTRACT

We have been studying the effect of preadministration of D-phenylalanin (DPA) on acupuncture analgesia for various types of pain. DPA is thought to suppress the activity of carboxypeptidase, which discomposes endorphins. In this double-blind placebo-controled study, clinical effectiveness of acupuncture with DPA preadministration in relieving chronic low back pain was examined.<br>DPA (4g) or placebo (lactose 4g) was orally administered to thirty out patients with chronic low back or lower extremity pain 30 minutes before acupuncture treatment. A half of the patients were given placebo in the first session and DPA in the second one, and the other half were given DPA firstly and placebo secondly.<br>The patients were asked to rate their pain after treatment in comparison with pre-treatment condition. Successful pain relief was obtained in 60% of the patients given DPA prior to acupuncture and in 33.4% of those given placebo. Although it is said that there is a great individual variation in response to acupuncture therapy, this result demonstrates that preadministration of D-phenylalanin enhances analgesic effect of acupuncture therapy.