Like all medicines, Ovesse can cause side effects, although not everybody gets them.
HRT medicines which circulate in the blood and are used to treat hot flushes and other menopausal symptoms are known as ‘systemic HRT’. These medicines include oral tablets and patches (transdermal patches) or gels which go on the skin. Systemic HRT increases the risk of some conditions occurring, especially when used for a long time (see below).
Ovesse contains a low dose of oestrogen which works locally in the vagina. Ovesse is classed as a local vaginal HRT, not a systemic HRT. It is thought that the risks associated with local HRT’s such as Ovesse are lower than those associated with systemic HRT’s, although it is not known for sure. Speak with your doctor or pharmacist if you are concerned.
Breast cancer
Evidence suggests that using Ovesse does not increase the risk of breast cancer in women who had no breast cancer in the past. It is not known if Ovesse can be safely used in women who had breast cancer in the past.
Regularly check your breasts. See your doctor if you notice any changes such as:
- dimpling or soreness of the skin (sometimes looking like an orange peel);
- changes in the nipple (such as discharge or the nipple turns inwards);
- unusual swelling in all or part of the breast, or any lumps or thickening you can see or feel.
Additionally, you are advised to join mammography screening programs when offered to you.
Ovarian cancer
Ovarian cancer is rare – much rarer than breast cancer. The use of oestrogen-only systemic HRT has been associated with a slightly increased risk of ovarian cancer.
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The risk of ovarian cancer varies with age. For example, in women aged 50 to 54 who are not taking HRT, about 2 women in 2000 will be diagnosed with ovarian cancer over a 5-year period. For women who have been taking HRT for 5 years, there will be about 3 cases per 2000 users (i.e. about 1 extra case).
Blood clots in a vein (thrombosis)
The risk of blood clots in the veins is about 1.3 to 3-times higher in systemic HRT users than in non- users, especially during the first year of taking it.
Blood clots can be serious, and if one travels to the lungs, it can cause chest pain, breathlessness, fainting or even death.
You are more likely to get a blood clot in your veins as you get older and if any of the following applies to you. Inform your doctor if any of these situations applies to you:
- you are unable to walk for a long time because of major surgery, injury or illness (see also section 3, If you need to have surgery)
- you are seriously overweight (BMI >30 kg/m2)
- you have any blood clotting problem that needs long-term treatment with a medicine used to prevent blood clots
- if any of your close relatives has ever had a blood clot in the leg, lung or another organ
- you have systemic lupus erythematosus (SLE)
- you have cancer.
Signs of a blood clot to look out for include:
- painful swelling and redness of the legs;
- sudden chest pain;
- difficulty in breathing.
If you observe any signs of a blood clot, stop using Ovesse and see your doctor immediately.
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Looking at women in their 50s who are not taking HRT, on average, over a 5-year period, 4 to 7 in 1000 would be expected to get a blood clot in a vein. For women in their 50s who have been taking estrogen-only HRT for over 5 years, there will be 5 to 8 cases in 1000 users (i.e. 1 extra case).
Heart disease (heart attack)
For women taking oestrogen-only therapy there is no increased risk of developing a heart disease.
Stroke
The risk of getting stroke is about 1.5 times higher in HRT users than in non-users. The number of extra cases of stroke due to use of HRT will increase with age.
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Looking at women in their 50s who are not taking HRT, on average, 8 in 1000 would be expected to have a stroke over a 5-year period. For women in their 50s who are taking HRT, there will be 11 cases in 1000 users, over 5 years (i.e. an extra 3 cases).
Other conditions
HRT will not prevent memory loss. There is some evidence of a higher risk of memory loss in women who start using HRT after the age of 65. Speak to your doctor for advice.