What is Dydrogesterone?
Dydrogesterone is a synthetic progestogen designed to mimic the action of the body’s natural progesterone. It is used in a range of combined Hormone Replacement Therapy (HRT) products. It has historically also been used to support early pregnancy, fertility treatments and menstrual disorders. It’s well absorbed when taken by mouth, and unlike some older types of progesterone, it doesn’t cause unwanted side effects such as acne, bloating, or changes in mood. It also acts more directly on the lining of the uterus and so has a more favourable bleeding pattern.
It’s really a well-seasoned performer!
Dydrogesterone has been enjoying a well-deserved resurgence in attention recently, particularly in discussions around HRT formulations. This is due to better safety data especially cardiovascular and breast safety. But dydrogesterone is far from a newcomer. It was first developed in the 1950s and introduced into clinical practice in 1961 under the brand name Duphaston. It has in fact been quietly helping women for over 60 years.
While dydrogesterone has been used in HRT for decades, its availability as a standalone product has been limited. The real hype came about in September 2025, when dydrogesterone was made available on the NHS HRT prescription prepayment certificate (PPC) which now means that it can be used as a standalone progestogen for cyclical HRT. Cyclical HRT means that you take oestrogen every day and progesterone for part of the month (usually 12–14 days). The progestogen protects the lining of the uterus from overgrowth. Most people still have a monthly bleed—like a period. This method is often recommended for perimenopausal women who still have periods, or those starting HRT and wanting a “natural” monthly cycle.
So why choose Dydrogesterone in cyclical HRT?
- Long-standing safety records
Dydrogesterone has been used for over 60 years, with extensive data showing it’s well tolerated. It has a neutral effect on mood, metabolism, and breast tissue, which can be reassuring for women concerned about side effects.
- Favourable side effect profile
Unlike some synthetic progestogens, dydrogesterone doesn’t cause acne, abnormal hair growth, or weight gain and doesn’t cause fluid retention or bloating. It is also well absorbed into the body. Compared with micronised progesterone (which is a body-identical form of progesterone such as Utrogestan), it’sless likely to cause drowsiness or tummy upset in some women.
- Evidence in HRT
Studies suggest dydrogesterone may have a more favourable risk profile than some older synthetic progestogens (used in HRT) for cardiovascular and breast outcomes.
- Individualised choice
Some women prefer dydrogesterone if they have experienced side effects on other progestogens, or if they want a regimen with predictable monthly bleeds without unwanted symptoms.
If you would like to more about your HRT options, or have queries about your current treatment, do reach out to us at admin@2meclinic.com
