Do Muscle Relaxers Help With Period Cramps?

Menstrual cramps have got you in the trenches, and you've done just about everything to curb the cramping — the heating pad, the yoga inversions you can't quite hold, the pleading with your uterus. Because when cramps hit, they hit. And though cramps have been normalized, their disruption should not be.

So, how have we gotten to muscle relaxers as a possible pain-relieving alternative? Are they actually helpful, or another maybe-solution floating in your algorithm? Here's what the science says.

Can muscle relaxers help with period cramps?

Occasionally, yes, but it's indirect.

Muscle relaxers are prescribed to soothe spasms and stiffness within skeletal muscles (muscles that attach to bone and move voluntarily). They work by interacting with neurotransmitters to block the nerve signals that trigger muscle contractions.

Uterine cramps, however, occur in smooth muscle, the involuntary muscle found in organs, and are driven by prostaglandins, not nerve signals. So muscle relaxers can't directly treat them. What they can do is offer some sedative-adjacent relief and loosen tension in secondary muscles (your back, your thighs) that are often caught in the crossfire.

How period cramps work (the prostaglandin problem)

Here's the one science-y bit worth knowing:

Prostaglandins are lipids that act like hormones, coordinating bodily functions, particularly at sites of tissue damage or injury, where they function as inflammatory mediators. During your period, prostaglandins trigger uterine contractions to shed the endometrium, and can also temporarily restrict blood flow to the uterus, which is where the cramping comes in.

Because of this, NSAIDs (non-steroidal anti-inflammatory drugs) are generally recommended over muscle relaxers. They address both the pain and the inflammation driving it.

Worth noting: prostaglandin levels vary from person to person, which is part of why cramp severity varies so much. If yours are consistently severe, it's worth flagging with a provider — endometriosis, fibroids, and adenomyosis can all present with significant cramping and are frequently underdiagnosed.

Best muscle relaxers for menstrual cramps: what may help

A note before we get into it: please consult a medical professional before trying any new medication. These affect everybody differently, and it's worth working with a prescriber to figure out what's right and safe for you.

Over-the-counter options

• Magnesium: A natural muscle relaxant with a decent amount of evidence behind it for period cramps. Studies have used doses between 150 and 300 mg per day, with higher doses showing more consistent benefit. Magnesium glycinate is generally considered the best-absorbed form for this purpose. One caveat: high doses can cause digestive issues in some people, so start low.
• Antihistamines: Certain antihistamines like Benadryl have mild muscle-relaxing properties, and the sedative effect can be welcome during a rough first day. The obvious downside: drowsiness. Plan accordingly.
• Topical applications: Menthol-based sprays, rollers, and gels, as well as CBD creams, can help with surface muscle tension. They won't reach deep uterine cramping, but for back and thigh tension, they're worth having on hand.

Prescription muscle relaxers

• Cyclobenzaprine (Flexeril): More commonly prescribed, but its sedating effects make it less practical for daytime use, and it's not specifically approved for menstrual cramps.
• Methocarbamol (Robaxin): Less sedating than Flexeril, though it still primarily targets skeletal muscle.
• Baclofen (Lioresal): Prescribed for muscle spasms, typically for more severe cases, and comes with more side effects to consider.

A few safety notes: don't mix muscle relaxers with alcohol or sedatives unless a provider has specifically cleared it, and avoid driving or operating heavy machinery while taking them, as they can be quite sedating. They can also interact with hormonal birth control and other medications — definitely worth checking with your prescriber. And because some are controlled substances with habit-forming potential, that's a real conversation to have openly with your doctor. If you're concerned about dependency, help is available. Also worth knowing: physicians rarely prescribe muscle relaxers specifically for period pain, though they may prescribe them for secondary muscle pain.

What your doctor might recommend instead

Since muscle relaxers don't address the root cause of cramps, your provider will likely steer you toward:

• NSAIDs (ibuprofen, naproxen): First-line treatment, because they target the prostaglandin-driven inflammation directly
• Hormonal birth control: Reduces prostaglandin production at the source
• Antispasmodics (hyoscine, dicyclomine): Specifically designed to treat smooth muscle, which makes them more targeted for uterine cramping than standard muscle relaxers
• Heat therapy: Well-studied and more effective than many people give it credit for; research has found it comparable to ibuprofen for some women
• TENS units: Deliver low-level electrical currents to the site of pain to alter how your body perceives it, drug-free and increasingly well-supported by research

DIY muscle relaxation for period cramps

A few at-home methods worth trying alongside (or instead of) medication:

• Gentle yoga poses, like child's pose or cat-cow, can help loosen pelvic muscles and take the edge off cramping
• Orgasms release endorphins and dopamine, both of which blunt pain signals
• Massage (whether self-administered or otherwise) supports circulation and can relieve secondary muscle tightness
• And honestly, rest is legitimate medicine. You don't have to optimize your way through a painful period.

When to see a healthcare provider about your cramps

Not all period pain is created equal. If cramping is severe enough to keep you from work, school, or daily life, or if OTC options aren't touching it, it's time to see a provider. Persistent, acute menstrual pain can signal endometriosis, uterine fibroids, or adenomyosis, all of which are frequently underdiagnosed and deserve a proper look.

Keeping a simple log helps: note your pain levels, timing, how long symptoms last, what you've tried and whether it helped, and any accompanying symptoms like heavy bleeding, nausea, or pain during sex. That information gives your provider something concrete to work with.

If your concerns are dismissed, seek a second opinion — you're well within your rights. Telehealth platforms like Wisp have made that more accessible for those who can't get in for in-person appointments.

Should you try muscle relaxers for your period?

Short answer: they're not designed for this, and there are better options. NSAIDs target the actual mechanism of period pain. Heat therapy has a surprisingly strong evidence base. Antispasmodics address smooth muscle directly.

That said, if anti-inflammatories and home remedies aren't cutting it, push for more from your provider. Debilitating cramps are not a normal part of having a period, and you don't have to accept them as one. It may take a try or two to land on what works for your body, and that's okay. Your body is deserving of comfort. Here’s to healthy, happy cycles ahead!