Dysmenorrhea
Most people who menstruate get some cramping with their periods. The pain often starts just before or as bleeding begins and can last 2–3 days, typically felt as lower-belly cramps but sometimes in the back and legs, occasionally with headache, fatigue, nausea, or diarrhea. This is usually normal (primary dysmenorrhea) and not a sign of anything serious. Less often, period pain comes from an underlying cause like endometriosis, ovarian cysts, or infection — which is why pain that’s new, worsening, or different from your usual pattern is worth a closer look.
Self-care products available in our shop
- Ibuprofen (Advil, Motrin) — works best started at the first sign of cramps
- Naproxen (Aleve) — longer-lasting, fewer doses per day
- Acetaminophen (Tylenol) if NSAIDs aren’t suitable for you
- Heat patches, wraps, and hot water bottles for the lower belly or back
- NSAIDs work best taken at the very start of cramps (or just before your period if it’s predictable) rather than waiting for the pain to build. Regular aerobic exercise, stretching, and yoga can also reduce symptoms over time.
Treatments our pharmacist can prescribe
For your information only: in Ontario, our pharmacist can assess this condition and, when appropriate, prescribe from the medications listed below. This information is provided for educational purposes — it is not an offer to sell. These are prescription treatments that require a pharmacist assessment, and the right option is chosen for you.
Nonsteroidal anti-inflammatory agents (NSAIDs): Acetylsalicylic acid / ASA, Celecoxib (Celebrex), Diclofenac (Voltaren), Flurbiprofen (Ansaid), Ibuprofen (Advil, Motrin), Ketoprofen, Mefenamic acid (Ponstan), Naproxen (Naprosyn, Aleve)
When to seek further care: See a health-care provider if over-the-counter pain relievers don’t help or make you feel worse, your period pain has become more severe than usual, you have similar pain when you’re not menstruating, or you notice a change in vaginal discharge or bleeding.