Dr. Sierra Magnets, Magnetic Products for Health
Pain from menstrual cramps can be reduced with magnetic therapy. Magnets help muscles relax more, reducing spasm and increasing circulation and oxygenation. A north (-) polarity magnetic pad is a simple and effective way to help relieve menstrual cramping and abdominal pain.
– Eccles, NK (2005). The Chiron Clinic, London, England. "A randomized, double-blinded, placebo-controlled pilot study to investigate the effectiveness of a static magnet to relieve dysmenorrhea." Journal of Alternative and Complementary Medicine. 2005 Aug;11(4):681-7. PMID: 16131292
Note: Avoid immersing the pad in water, or getting it wet, as it weakens the fabric and because of the strength in the magnets they will attract each other.