Does Cinnamon Work as Well as Ibuprofen for Period Pain?

Cinnamon capsules have been compared directly with ibuprofen for period cramps. In that comparison, cinnamon performed better than placebo later in the observation period, but ibuprofen provided stronger pain relief. A claim that cinnamon “works for cramps” leaves out that difference.¹

The preparation matters too. These researchers studied capsules. The results cannot specify how many cinnamon sticks to steep, how much powder to sprinkle on breakfast or whether a cup of cinnamon tea will relieve the same pain.

What the ibuprofen comparison measured

Published in 2015, the trial¹ assigned 114 students at Ilam University of Medical Sciences in Iran to cinnamon, ibuprofen or starch placebo, with 38 per group. Eligibility included ages 18–30, regular cycles and primary dysmenorrhea. Researchers recorded pain on a 0–10 scale during the first 72 hours of menstruation.¹

Cinnamon did not differ significantly from placebo during the first four hours. From eight hours onward, its pain scores were significantly lower than placebo. Ibuprofen’s scores were lower than cinnamon’s at the measured follow-up times. At 24 hours, the group averages were 2.0 with ibuprofen, 4.1 with cinnamon and 6.1 with placebo.¹

These results do not demonstrate equivalent relief. They also concern young students selected for primary dysmenorrhea, so they cannot answer how cinnamon would affect pain caused by fibroids, endometriosis or adenomyosis.

Why this paper cannot supply a confident capsule schedule

The ibuprofen-comparison paper’s capsule descriptions are inconsistent. Its methods describe a 420-milligram cinnamon capsule three times daily, while its discussion describes a total of about 2.5 grams daily. Those quantities do not agree.¹

A companion report specifies two 420-milligram capsules three times daily. That clarification is useful when reading the research; it is not a reason to convert the articles into a home dosing plan.²

To assess a supplement, the dose has to be reproducible, the preparation identifiable and its risks considered. A reader should not have to choose which paragraph of a paper supplied the intended amount.

The bleeding report needs separate scrutiny

The companion paper, also published in 2015, describes 76 students receiving cinnamon or placebo. It reports reduced pain, nausea, vomiting and menstrual bleeding. Bleeding was assessed through counts of saturated pads, rather than a laboratory measurement of blood loss.²

The two papers list the same trial registration, IRCT2013122114668N2. They also come from the same university and study period. Their relationship deserves clarification before anyone counts them as two independent confirmations. They should be treated as related reports unless participant independence is confirmed.¹²

Pad counts cannot establish a treatment effect on clinically diagnosed heavy menstrual bleeding. A reduction in that measure among selected students is not evidence that cinnamon will manage fibroids or replace a heavy-bleeding assessment.

A later placebo comparison does not establish equivalence

A trial published in 2018 at Isfahan University of Medical Sciences tested cinnamon against starch placebo during the first 72 hours of menstruation over two cycles. The publisher’s available abstract and section excerpts describe improvement in both groups, with a larger reduction in the cinnamon group.³

That supports further investigation of pain relief. It does not answer the ibuprofen question, because this later comparison had no ibuprofen arm. The full study was not available for this article’s review, so the abstract’s favorable conclusion should not be treated as a complete safety assessment.

A spice portion and a supplement are different exposures

The NCCIH⁴ considers cinnamon likely safe in amounts commonly used as a food spice. Larger amounts or prolonged use can cause gastrointestinal problems or allergic reactions. Product labels may not identify the cinnamon species or plant part.⁴

That matters because cassia cinnamon can contain substantial coumarin. Prolonged use may pose a problem for susceptible people, including those with liver disease; Ceylon cinnamon may contain only trace amounts. NCCIH⁴ advises discussing herbal products with a health care provider when taking medicines.⁴

“No side effects reported” during a small, short trial cannot rule out uncommon reactions, interactions or problems from repeated use. Nor does the word “cinnamon” establish that a retail capsule matches the research preparation.

Choose a pain plan that leaves room for assessment

If ibuprofen is unsuitable for you, this comparison does not automatically make cinnamon the appropriate replacement. Discuss alternatives with a clinician or pharmacist. Our guide to painkillers for period cramps examines the broader treatment evidence; our heating-pad guide covers an option also included in NHS⁵ advice.⁵

The NHS⁵ advises assessment when periods become more painful, heavier or irregular, when pain prevents usual activities, or when there is pain during sex or bleeding between periods. Severe or worse-than-usual period or pelvic pain that has not responded to painkillers warrants urgent advice. In the UK, that means an urgent GP appointment or NHS 111.⁵

Period, Handled, Chapter 7’s “The Supplement Aisle,” explains how small trials, varying preparations and sparse safety reporting limit supplement claims. Its Period Scorecard gives you a place to record pain, its effect on your day and what you tried. Bring those observations to a visit if relief is inadequate, rather than replacing one unhelpful purchase with another.