Important Information about the safety of HRT
As well as benefits, HRT has some risks that need to be considered when you are deciding whether to take HRT or whether you want to continuing taking HRT. These risks are:
- Effects on you heart or circulation - heart disease, stroke and blood clots
- Risks associated with developing cancers - breast cancer, ovarian cancer and endometrial cancer
Effects in your Heart or Circulation
Heart Disease
HRT is not recommended for women who have heart disease, or have had heart disease recently. If you have ever had heart disease, talk to your doctor or see if you should be taking HRT.
HRT will not prevent heart disease
Studies with one type of HRT product (containing conjugated estrogen and the progestogen MPA) have shown that women may be slightly more likely to get heart disease during the first year of taking the medication. For other types of HRT products, the risk is likely to be similar, although this is not yet certain.
If you get:
- A pain in your chest that spreads to you arm and neck
-
See a doctor as soon as possible and do not take any more Indivina until your doctor says you can. This pain could be a sign of heart disease.
Stroke
Recent research suggests that HRT slightly increases the risk of having a stroke. Other things that can increase the risk of stroke include:
- getting older
- high blood pressure
- smoking
- drinking too much alcohol
- an irregular heartbeat
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 Indivina.
Compare
Looking at women in their 50's who are not taking HRT - on average, over a 5 year period, 3 in 1000 would be expected to have a stroke.
For women in their 50's who are taking HRT, the figure would be 4 in 1000.
Looking at women in their 60's who are not taking HRT - an average, over a 5 year period, 11 in 1000 would be expected to have a stoke.
For women in their 60's who are taking HRT the figure would be 15 in 1000.
If you get:
- unexplained migraine-type headaches with or without disturbed vision
-
See a doctor as soon as possible and do not take any more Indivina until your doctor says you can. These headaches may be an early warning sign of a stroke.
Blood Clots
HRT may increase the risk of blood clots in the veins (called deep vein thrombosis, or DVT) especially during the first year of taking it.
These blood clots are not always serious, but if one travels to the lungs it can cause chest pain, breathlessness, collapse or even death. This condition is called pulmonary embolism or PE.
DVT and PE are examples of a condition called venous thromboembolism or VTE. You are more likely to get a blood clot:
- if you are seriously overweight
- if you have had a blood clot before
- if any of your close family have had blood clots
- if you have had one or more miscarriages
- if you have any blood clotting problem that needs treatment with a medicine such as warfarin
- if you are off your feet for a long time as a result of major surgery, illness or injury
- if you have a rare condition called SLE
If any of these things apply to you, talk to your doctor to see if you should take Indivina
Compare
Looking at women in their 50's who are not taking HRT - on average, over a 5 year period, 3 in 1000 would be expected to get a blood clot.
For women in their 50's who are taking HRT, the figure would be 7 in 1000.
Looking at women in their 60's who are not taking HRT - an average, over a 5 year period, 8 in 1000 would be expected to get a blood clot.
For women in their 60's who are taking HRT the figure would be 17 in 1000.
If you get:
- painful swelling in your leg
- sudden chest pain
- difficulty breathing
-
See your doctor as soon as possible and do not take any more Indivina until your doctor says you can. These may be signs of a blood clot.
If you are going to have surgery,
make sure your doctor knows about it. You may need to stop taking Indivina about 4 to 6 weeks before the operation to reduce the risk of a blood clot. Your doctor will tell you when you can start taking Indivina again.
Risks associate with developing cancer
Breast Cancer
Women who have breast cancer, or have had breast cancer in the past should not take HRT.
Taking HRT slightly increases the risk of breast cancer; so does having a later menopause. The risk for a post-menopausal woman taking estrogen-only HRT for 5 years is about the same as for a woman of the same age who's still having periods over that time and not taking HRT. The risk for a woman who is taking estrogen plus progestogen HRT is higher than for estrogen-only HRT (but estrogen plus progestogen HRT is beneficial for the endometrium see "Endometrial cancer" below).
For all kinds of HRT, the extra risk of breast cancer goes up the longer you take HRT, but returns to normal within about 5 years after stopping.
Your risk of breast cancer is also higher:
- if you have a close relative (mother, sister or grandmother) who has had breast cancer.
- if you are seriously overweight
Compare
Looking at women aged 50 who are not taking HRT - on average, 32 in 1000 will be diagnosed with breast cancer by the time they reach the age of 65
For women who start taking estrogen-only HRT at aged 50 and take it for 5 years, the figure will be between 33 and 34 in 1000 (ie an extra 1-2 cases).
If they take estrogen-only HRT for 10 years, the figure will be 37 in 1000 (ie an extra 5 cases)
For women who start taking estrogen plus progestogen HRT at age 50 and take it for 5 years the figure will be 38 in 1000 (ie an extra 6 cases)
If they take estrogen plus progestogen HRT for 10 years, the figure will be 51 in 1000 (ie an extra 19 cases)
If you notice
any changes in your breast, such as:
- dimpling of the skin
- changes in the nipple
- any lumps you can see or feel
-
Make an appointment to see your doctor as soon as possible
Endometrial cancer (cancer of the lining of the womb)
Taking estrogen-only HRT products for a long time can increase the risk of cancer of the lining of the womb (the endometrium). Taking a progestogen as well as the estrogen helps to lower the extra risk.
If you still have a womb your doctor may prescribe a progestogen as well as estrogen. If so, these may be prescribed separately or as a combined HRT product like Indivina.
If you have had your womb removed (a hysterectomy) your doctor will discuss this with you whether you can safely take estrogen without progestogen. Indivina is not recommended for these women.
If you have had your womb removed because of endometriosis any endometrium left in your body may be at risk. So your doctor may prescribe HRT that includes a progestogen as well as an estrogen.
Your product, Indivina contains a progestogen
Compare
Looking at women who still have a uterus and who are not taking HRT - on average 5 in 1000 will be diagnosed with endometrial cancer between the ages of 50 and 65 years
For women who take estrogen-only HRT the number will be 2 to 12 times higher, depending on the dose and how long you take it
The addition of progestogen to estrogen only HRT substantially reduces the risk of endometrial cancer
If you get breakthrough bleeding or spotting it is usually nothing to worry about, especially during the first few months of taking HRT.
But if the bleeding or spotting:
- carries on for more than the first few months
- starts after you have been on HRT for a while
- carries on even after you have stopped taking HRT
-
Make an appointment to see your doctor. It could be a sign that you endometrium has become thicker.
Ovarian Cancer
Ovarian cancer (cancer of the ovaries) is very rare but it is serious. It can be difficult to diagnose because there are no obvious signs of the disease.
Some studies have indicated that taking estrogen only HRT for more than 5 years may increase the risk of ovarian cancer. It is not yet known whether other kinds of HRT products increase the risk in the same way.