Pefax-MF Tablet is a combination medication that treats heavy menstrual bleeding and pain. Pefax-MF Tablet reduces the pain caused by muscle cramps during menstrual cycles. It suppresses pain signals, relaxes muscles, and prevents muscles from contracting unexpectedly (spasms). This alleviates your pain and discomfort. You can also use a heating pad, take a hot shower, reduce stress, and try modest exercise to relieve the discomfort.