Tranexamic acid is the most effective non-hormonal tablet for reducing heavy period bleeding, cutting blood loss by 26% to 60% depending on the dose. It works from the first day you take it and doesn’t contain any hormones, making it a practical option if you simply want lighter periods without changing your cycle. That said, the best tablet for you depends on whether you also want contraception, how heavy your bleeding is, and your medical history.
Heavy periods are clinically defined as losing more than 80 milliliters (about 2.7 ounces) of blood per cycle, or bleeding that lasts longer than 5 to 7 days. If you’re soaking through a pad or tampon every hour for several hours, passing large clots, or feeling exhausted and lightheaded during your period, your bleeding likely qualifies.
Tranexamic Acid: The Top Non-Hormonal Option
Tranexamic acid works by helping blood clots stay intact. Normally, your body forms clots to slow bleeding, then breaks them down. During a heavy period, that breakdown process is overactive in the uterine lining. Tranexamic acid slows the clot-dissolving step, so blood clots hold firm longer and you lose less blood.
The typical dose is around 1 gram taken three times a day, starting on the first day of your period and continuing for up to four or five days. In the US, the recommended dose is slightly higher at 1.3 grams three times daily. You don’t take it throughout your cycle, only during the days you’re bleeding heavily. Most people notice reduced flow on day one.
The major advantage of tranexamic acid is that it doesn’t affect your hormones or your fertility. It won’t change when your period comes or whether you ovulate. The main safety concern is blood clots. If you have a history of deep vein thrombosis, pulmonary embolism, or stroke, or if you have a strong family history of clotting disorders, tranexamic acid is not safe for you. Your doctor will ask about these risk factors before prescribing it.
Anti-Inflammatory Painkillers That Also Reduce Flow
NSAIDs like mefenamic acid and ibuprofen pull double duty during periods. They reduce both pain and bleeding by lowering your body’s production of prostaglandins, chemicals that trigger uterine contractions and influence how much the blood vessels in your uterine lining open up.
Mefenamic acid reduces menstrual blood loss by roughly 10% to 40% compared to placebo, making it moderately effective. Ibuprofen at higher doses (1,200 mg per day, split into multiple doses) lowers blood loss by about 25%. At lower doses, ibuprofen doesn’t do much more than a placebo for flow reduction, though it still helps with cramping. Overall, NSAIDs reduce bleeding by about 30% on average, which is less than tranexamic acid but still meaningful if your periods are moderately heavy rather than severe.
These are particularly useful if heavy bleeding comes with significant pain, since you’re treating both problems with one tablet. They’re taken only during your period, similar to tranexamic acid, and the two can sometimes be used together.
Hormonal Tablets for Heavier Bleeding
If you also want contraception, or if non-hormonal options haven’t been enough, hormonal tablets offer stronger blood loss reduction over time.
Combined Oral Contraceptive Pill
The combined pill contains both estrogen and progestogen. It thins the uterine lining so there’s less tissue to shed each month. Over six months, studies show it brings periods back to normal levels in up to 77% of women with confirmed heavy bleeding, compared to just 3% of those taking a placebo. That’s a dramatic difference, but it takes a few cycles to reach full effect. You won’t see the same first-day relief that tranexamic acid provides.
The pill also regulates your cycle, reduces cramping, and provides contraception. It’s not suitable if you’re over 35 and smoke, have a history of blood clots, or have certain types of migraines.
Norethisterone
Norethisterone is a progestogen-only tablet sometimes used to stop an active heavy bleed quickly. For acute bleeding, it’s prescribed at 5 to 10 mg every four to eight hours until the bleeding stops. It can also be taken cyclically (at lower doses for part of each month) to manage heavy periods over time, though it’s generally less effective than other options for long-term use.
Norethisterone is most useful as a short-term rescue option when bleeding is unusually heavy or prolonged, rather than as an ongoing treatment.
How These Options Compare
- Tranexamic acid: Reduces flow 26% to 60%. Non-hormonal. Taken only during your period. Works from day one. Avoid if you have clotting risk factors.
- Mefenamic acid: Reduces flow 10% to 40%. Also treats cramps. Non-hormonal. Taken during your period.
- Ibuprofen: Reduces flow about 25% at higher doses. Widely available. Less effective than mefenamic acid for flow reduction.
- Combined pill: Brings periods to normal in up to 77% of women over six months. Also provides contraception. Daily tablet taken throughout your cycle.
- Norethisterone: Best for stopping an active heavy bleed. Less commonly used for long-term management.
What Doctors Recommend First
UK guidelines from NICE recommend a hormonal IUD (not a tablet, but worth knowing about) as the single most effective first-line treatment for heavy periods. It releases a small amount of progestogen directly into the uterus and reduces blood loss by around 84% within three months and nearly 89% by six months. It lasts for years and requires no daily effort.
If you prefer tablets or an IUD isn’t suitable, guidelines recommend choosing between tranexamic acid and NSAIDs (if you want non-hormonal treatment) or the combined pill and cyclical progestogens (if you’re open to hormonal options). Tranexamic acid and NSAIDs can be used together if one alone isn’t enough.
Choosing the Right Tablet for You
If your main goal is reducing flow without hormones and you don’t have clotting risks, tranexamic acid gives the strongest results. If you also have painful periods, mefenamic acid handles both problems at once, though with less flow reduction. If you want contraception along with lighter periods and are willing to wait a few cycles for full results, the combined pill is a solid choice.
For genuinely heavy bleeding that’s affecting your energy, causing anemia, or disrupting your daily life, it’s worth getting a blood test to check your iron levels and an ultrasound to rule out fibroids or polyps. These structural causes are common and may need different treatment. The tablets described here work best when heavy bleeding is caused by normal hormonal variation rather than an underlying structural problem, though tranexamic acid and hormonal options can still help in many of those cases too.