Patient Leaflet Updated 19-Aug-2026 | Marlborough Pharmaceuticals Ltd
Gynest 0.01% Cream
Gynest Cream
Estriol
1. What Gynest is and what it is used for
2. What you need to know before you use Gynest
3. How to use Gynest
4. Possible side effects
5. How to store Gynest
6. Contents of the pack and other information
The name of your medicine is Gynest Cream. It is called ‘Gynest’ in this leaflet.
Gynest contains a medicine called estriol. This is the new name for oestriol - the medicine itself has not changed.
Estriol is a hormone known as an oestrogen. It belongs to a group of medicines called hormone replacement therapy (HRT).
Gynest is used for vaginal problems caused by a lack of the hormone oestrogen.
Women produce oestrogen hormones from their ovaries throughout their adult life. These hormones are important in sexual development and control of the menstrual cycle.
The menopause happens when the level of hormones produced by the ovaries goes down. This is a gradual process. During this time the levels of oestrogen can go up and down.
This can cause the following symptoms:
You may get the same symptoms if you have had your ovaries taken out in an operation. This is called a ‘surgical menopause’.
Do not use this medicine if any of the above apply to you. If you are not sure, talk to your doctor or pharmacist before using Gynest.
Check with your doctor or pharmacist before using Gynest if:
Before taking HRT, your doctor should ask about you and your family’s medical history. Your doctor may decide to examine your breasts or your stomach and may do an internal examination. They will only do this if it is necessary for you or if you have any special concerns.
Once you have started on HRT, see your doctor for regular check-ups (every three months). At these check-ups, your doctor may discuss the benefits and risks of continuing to take HRT.
Make sure that you:
Tell your doctor if you have ever had any of the following. You may need above checks more often.
Tell your doctor if you are going to have surgery. You may need to stop taking HRT about 4 to 6 weeks before the operation to reduce the risk of blood clot. Your doctor will tell you when you can start taking HRT again.
If you visit a hospital or your family doctor for a blood or urine test, tell them that you are using Gynest. This is because this medicine may affect the results of the test.
As well as benefits, HRT has some risks. Consider the following when deciding to take or continue HRT.
Studies have shown that there was no increase in heart disease in women without a womb using oestrogen-only HRT.
If you get a pain in your chest that spreads to your arm and neck
This pain may be a sign of heart disease.
The risk of having a stroke due to a blood clot is up to 1.5 times higher with HRT. Other things that can increase the risk of stroke include:
If you are worried about any of these things or if you have had a stroke in the past, talk to your doctor to see if you should take HRT.
How likely is a stroke?
Looking at women in their 50s, on average, over 5 years:
If you get migraine-type headaches which you cannot explain
These headaches may be an early warning sign of a stroke.
Blood clots
HRT may increase the risk of blood clots in the veins (also called deep vein thrombosis or DVT), by up to 3 times, especially during the first year of taking it.
These blood clots are not always serious. However, if a clot travels to the lungs, it can cause chest pain, breathlessness, collapse or even death. This is called pulmonary embolism or PE.
The risk of a blood clot increases with age. In addition, you are more likely to get a blood clot if:
If any of these things apply to you, talk to your doctor to see if you should take HRT.
How likely is a blood clot?
Looking at women in their 50s, on average, over 5 years:
If you get painful swelling in your leg, sudden chest pain or have difficulty breathing
These may be signs of a blood clot.
The following risks apply to hormone replacement therapy (HRT) medicines which circulate in the blood. However Gynest, is for local treatment in the vagina and the absorption into the blood is very low. It is less likely that the conditions mentioned below will get worse or come back during treatment with Gynest, but you should see your doctor if you are concerned.
Breast cancer
Women who have breast cancer or are suspected of having breast cancer or have had breast cancer in the past should not take HRT.
Evidence suggests that using Gynest does not increases the risk of breast cancer in women who had no breast cancer in the past. It is not known if Gynest can be safely used in women who had breast cancer in the past.
Your risk of breast cancer is also higher if:
How likely is breast cancer?
Looking at women between the ages of 50 and 65, on average, over 5 years:
If you notice any changes in your breast, such as:
Make an appointment to see your doctor as soon as possible
Endometrial cancer (cancer of the lining of the womb)
Taking oestrogen-only HRT tablets for a long time can increase the risk of cancer of the lining of the womb (the endometrium). It is possible there may be a similar risk with oestrogen cream used for repeated treatments or over a long time. You do not need to take a separate progestogen with Gynest.
If you get breakthrough bleeding or spotting, it is usually nothing to worry about, especially in the first few months of taking HRT. However, if it carries on for more than a few months, or starts after you have been using Gynest for a while, or carries on after you have stopped using Gynest, you should make an appointment to see your doctor. It could be a sign that your endometrium has become thicker.
How likely is endometrial cancer?
Looking at women who still have a uterus and who are not taking HRT - on average 5 in 1,000 will be diagnosed with endometrial cancer.
For women who take oestrogen-only HRT, the number will be 2-12 times higher, depending on the dose and how long they take it. Even after they stop taking oestrogen-only HRT, they will be at higher risk for at least 10 years.
Ovarian cancer
Ovarian cancer (cancer of the ovaries) is very rare, but it is serious. It can be difficult to diagnose. This is because there are often no obvious signs of the disease. Some studies have suggested that taking oestrogen-only HRT for more than 5 years may slightly increase the risk of ovarian cancer by 1 extra case per 2,500 women. It is not yet known whether Gynest increases the risk in the same way.
Tell your doctor if these illnesses return or get worse while you are using Gynest.
Please tell your doctor or pharmacist if you are taking or have recently taken any other medicines. This includes medicines that you buy without a prescription or herbal medicines.
In particular, tell your doctor or pharmacist if you are taking any of the following:
Taking these medicines with Gynest can stop Gynest from working as well as it should and may cause bleeding from your womb.
Do not use this medicine if you are pregnant, think you may be pregnant or might become pregnant. This is because it may affect the baby. Do not use this medicine if you are breast-feeding.
Ask your doctor or pharmacist for advice before taking any medicine if you are pregnant or breast-feeding.
There is no information about whether Gynest affects your ability to drive or use machines.
See how this medicine affects you before you drive or use any tools or machines.
Gynest should be used in the vagina of adult women. Always use this medicine exactly as your doctor has told you. You should check with your doctor or pharmacist if you are not sure.
Gynest comes with a plastic applicator that you screw on to the tube. It will help you to put the right amount into your vagina.
Unless your doctor tells you otherwise, you should:
When your symptoms improve, your doctor may recommend that you:
1. Remove the cap from the tube. Use the top of the cap to pierce the metal seal on the tube
2. One end of the applicator has a plunger. Screw the other end of the applicator onto the tube
3. Squeeze the tube so that the applicator barrel is completely filled with cream. This will push the plunger out
4. Unscrew the filled applicator and replace the cap on the tube
5. Lie down with your knees bent and spread apart
6. Gently insert the open end of the applicator well into your vagina
7. Push the plunger firmly but gently. Empty the cream into your vagina by pushing the plunger as far as it will go
8. Keep the plunger firmly pressed down. Grip the applicator by the barrel and remove the empty applicator
9. Wash your hands afterwards
10. Use a sanitary towel to stop your clothes getting stained
After each use:
Putting the applicator back together
If you lose or break your applicator you can get a new one from a pharmacist. Ask for the Gynest Vaginal Applicator.
When to stop using Gynest
If a large amount of the cream is eaten or swallowed talk to a doctor or go the nearest hospital casualty department straight away.
Apply the missed dose when you remember. Do not use Gynest more than once on any one day.
If you have any further questions on the use of this product, ask your doctor or pharmacist.
Wash out the cream. Too much oestrogen therapy may cause breast pain or tenderness, nausea, spotting, abdominal cramps and/or bloating. If you are worried or have any unusual symptoms you should contact your doctor.
Like all medicines, Gynest can cause side effects, although not everybody gets them.
In the reproductive and urinary system
In the breasts
In the stomach
In the skin
In the nervous system and brain
In other parts of the body
If any of the side effects gets serious, or if you notice any other side effects not listed in this leaflet, please tell your doctor or pharmacist
If you get any side effects, talk to your doctor, nurse or pharmacist. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via the Yellow Card Scheme at www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store.
By reporting side affects you can help provide more information on the safety of this medicine.
Keep out of the sight and reach of children.
Do not store above 25°C.
Do not use Gynest after the expiry date which is stated on the pack. The expiry date refers to the last day of that month.
Do not use Gynest if you notice that the tube seal is missing or broken.
Medicines should not be disposed of via wastewater or household waste. Ask your pharmacist how to dispose of medicines no longer required. These measures will help protect the environment.
The active substance in Gynest is estriol.
Gynest contains 0.01% estriol.
The other ingredients are benzoic acid (E210), glyceryl monostearate, arachis oil (peanut oil), glycerin, glutamic acid, purified water.
Gynest is a white to yellowish-white cream. It comes in tubes of 80g.
The product licence is held by:
Gynest is made by:
For information in large print, tape, CD or Braille, telephone 01279 406759.
This leaflet was last revised in November 2020
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