Tranexamic Acid for Heavy Periods - A Non-Hormonal Option
Heavy menstrual bleeding is a common problem that can affect work, social life, and overall wellbeing. Many women are told that the main treatments involve hormones — such as the pill, progesterone tablets, or the hormonal IUD. While these are very effective, they don’t suit everyone.
That’s where tranexamic acid comes in.
What is tranexamic acid?
Tranexamic acid is a medicine that helps reduce bleeding by stabilising the body’s natural blood clots. It doesn’t thin the blood or affect hormone levels. Instead, it works by stopping clots from breaking down too quickly in the uterus during a period.
It is taken only on the days you have heavy bleeding, usually for up to 4–5 days at a time, but can be taken longer.
How effective is it?
Studies show that tranexamic acid can reduce menstrual blood loss by around 40–60%. This means periods are usually lighter, easier to manage, and associated with less fatigue or anaemia.
It can be used long term, or just for certain occasions (for example, if you want your period to be lighter for an event, holiday, or sports competition).
Advantages of tranexamic acid
- Non-hormonal – it doesn’t interfere with your natural cycle, fertility, or cause hormonal side effects like weight gain, mood change, or breast tenderness.
- Used only when needed – you take it only during your period, not every day.
- Quick effect – most people notice lighter bleeding within hours.
- Compatible with future pregnancy – unlike some treatments, it doesn’t affect fertility.
- Can be combined with other treatments – for example, with an IUD or pain relief medicines if needed.
Safety and side effects
Tranexamic acid is considered very safe. Common side effects are uncommon but can include:
- Mild stomach upset, nausea, or diarrhoea
- Rarely, headaches
It is not associated with weight gain, mood changes, or bone health effects.
Blood clot risks
Because it works on the body’s clotting system, some people worry about the risk of blood clots (such as DVT or pulmonary embolism). Large studies show that tranexamic acid use does not increase the risk of pathological blood clots.
Tranexamic acid is usually avoided if you have:
- A need for anticoagulant medication
- Certain clotting disorders
- Current use of the combined oral contraceptive pill if you also have other clot risk factors
How is it taken?
- Usually prescribed as tablets (500 mg)
- Typical dose: 2–3 tablets up to three times a day, started when bleeding begins
- Used until your period lightens to spotting
- Stop taking it once bleeding has settled
When might it not be enough?
While tranexamic acid can be very effective, it may not fully control bleeding in every case. If periods remain very heavy or are associated with severe pain, further tests or alternative treatments may be recommended.
Key takeaways
- Tranexamic acid is a safe, non-hormonal option for managing heavy periods.
- It can reduce bleeding by around half and improve quality of life.
- It is taken only on period days, with few side effects for most women.
- It may not suit everyone, especially those with a history of blood clots.