Progynova: experiences, side effects and how it works

Progynova is an oestrogen tablet prescribed both for menopause symptoms and as part of an IVF pathway. It contains estradiol valerate, which your body converts into estradiol. The side effects of Progynova are usually mild, but there is one point that goes wrong more often than all the side effects combined: Progynova contains oestrogen only, and for many women that is not complete on its own.

What is Progynova and how does it work?

Progynova contains estradiol valerate, a form of oestrogen converted after you take it into estradiol, the oestrogen your ovaries make themselves. You take it daily. It comes in two strengths, usually 1 mg and 2 mg.

There are two quite different situations in which it is used. The first is menopause: when your ovaries produce less oestrogen, Progynova tops it up, which can reduce hot flushes, night sweats, sleep problems and vaginal dryness. The second is an IVF or frozen transfer pathway, where oestrogen is used to build up the womb lining before an embryo is transferred.

The key thing to know: Progynova is oestrogen without a progestogen. If you still have a uterus, oestrogen on its own can thicken the womb lining too much. Your doctor will then add a progestogen such as Utrogestan, or choose a combined product such as Femoston. Only after a hysterectomy is oestrogen on its own the usual approach.

Progynova compared with other forms of oestrogen

Oestrogen can be given as a tablet or through the skin, and that difference is not cosmetic. A tablet passes through your liver first; delivery through the skin does not. That has consequences for clot risk:

These strengths come from the patient leaflet and the Dutch Farmacotherapeutisch Kompas. Large-scale research in the BMJ (2019) found oral oestrogens were associated with a raised risk of venous thrombosis, while oestrogen through the skin showed no such association. If you have a raised clot risk, that is a reason to discuss the delivery form with your doctor.

Progynova experiences: what do users say?

Experiences with Progynova vary, partly because it is used for two very different goals. Women in menopause judge it on symptom relief; women in an IVF pathway mostly on how it feels during an already demanding period.

Positive experiences: clearly fewer hot flushes and night sweats, often within a few weeks; better sleep and more daytime energy; less vaginal dryness; a tablet that is easy to fit into a routine; and clear instructions with lining checks in an IVF protocol.

Points women mention: tender breasts and headache in the first weeks, nausea that often eases when taken in the evening, unexpected bleeding especially in the early months, confusion about the accompanying progestogen and when to take it, and fluid retention at the start.

Picture two women of 51 with the same hot flushes. One settles within a month on Progynova 1 mg with a progestogen alongside. The other keeps getting headaches and nausea and only improves on a patch, because it bypasses the liver and gives a steadier level. The same symptoms, a different delivery form.

Side effects of Progynova

Most side effects of Progynova are mild and ease once your body adjusts, usually within two to three months. Commonly reported are headache, tender or full breasts, nausea, abdominal pain, fluid retention and mood changes. Irregular bleeding is most likely in the first months.

Less commonly it involves migraine, a skin rash or bloating. Such complaints do not automatically mean oestrogen supplementation is wrong for you; sometimes a lower dose or a different delivery form is enough.

Contact your doctor about persistent or heavy bleeding, and immediately about a painful swollen leg, sudden breathlessness or chest pain. Those are rare but serious signals. If unexpected bleeding continues beyond the first months, have it checked, precisely because oestrogen without enough progestogen can thicken the lining.

Benefits and points to consider

The benefit of Progynova is flexibility. Because it contains oestrogen only, your doctor can choose and adjust the oestrogen dose and the progestogen independently. For women who did not tolerate a combined tablet well, that is often exactly what was needed.

The point to consider is the flip side: those separate parts both have to be there. A Cochrane review (2004) confirmed that oestrogen therapy effectively reduces hot flushes, with roughly three quarters fewer symptoms than without treatment. The large WHI study in JAMA (2002) also showed that the balance of benefits and risks depends on your age, your health and how long you use it, which is why the lowest effective dose and periodic review have become standard.

Alternatives to Progynova

If Progynova does not suit you, the choice depends mainly on whether you want a tablet or delivery through the skin, and whether you prefer oestrogen and progestogen combined.

• An estradiol patch, Oestrogel or Lenzetto spray if you want to bypass the liver
• Femoston if you would rather have oestrogen and progestogen in one tablet
• Want the broader picture first? Read about types of hormone therapy and their side effects

Which values to test

Before starting oestrogen supplementation, a hormone test gives your doctor a starting point. Values often looked at are oestradiol and FSH, plus your thyroid (TSH), because thyroid complaints can closely resemble menopause symptoms and are otherwise easily missed.

During use, checking your oestradiol now and then can help tailor the dose to you rather than to an average. The Menopause blood test from Lunara maps these values, with an assessment by a BIG-registered doctor. If you only want your oestrogen, the separate estradiol test covers that. Unsure what a result means? See the table of normal oestradiol values.

Frequently asked questions

How quickly does Progynova work?

Hot flushes and night sweats often ease within two to four weeks. The full effect on sleep, mood and energy can take 4 to 12 weeks. If you notice little difference after three months, discuss whether the dose or delivery form should change.

Do you need a progestogen with Progynova?

If you still have a uterus, almost always. Oestrogen alone can thicken the womb lining too much, and a progestogen prevents that. After a hysterectomy, oestrogen on its own is the usual approach.

Why is Progynova used in IVF?

In a transfer pathway, oestrogen is used to build up the womb lining so an embryo can implant. Your clinic sets the protocol and checks the thickness of the lining by ultrasound. Always follow your clinic protocol.

Do you gain weight on Progynova?

Weight gain around menopause is usually linked to age and a changing metabolism, not directly to oestrogen. Fluid retention in the first weeks can show temporarily on the scales.

When should you take Progynova?

Every day at around the same time, with or without food. Many women choose the evening, so any nausea is less noticeable.

Progynova is a flexible form of oestrogen supplementation that combines and doses well. The most important question is not which brand name is on the box, but whether your oestrogen and progestogen add up together, and whether a tablet or delivery through the skin better suits your risk profile. Discuss those two points with your doctor.

Every blood test result includes a professional assessment from a BIG-registered doctor. For treatment decisions, discuss your results with your GP.

References

• Farmacotherapeutisch Kompas. Estradiol (valerate). Accessed 2026.
• Thuisarts.nl. Menopause complaints. Accessed 2026.
• MacLennan AH, et al. Oral oestrogen and combined oestrogen/progestogen therapy versus placebo for hot flushes. Cochrane Database of Systematic Reviews, 2004. PMID 15495039.
• Vinogradova Y, Coupland C, Hippisley-Cox J. Use of hormone replacement therapy and risk of venous thromboembolism. BMJ, 2019. PMID 30626577.
• Rossouw JE, et al. Risks and benefits of estrogen plus progestin in healthy postmenopausal women: principal results from the Women's Health Initiative randomized controlled trial. JAMA, 2002. PMID 12117397.