If you have ever experienced any of the following conditions before starting treatment, they may reappear or worsen during therapy. In such cases, regular medical check-ups are advised:
Uterine fibroids, endometriosis, endometrial hyperplasia, increased risk of blood clots, risk factors for estrogen-dependent tumours (e.g. first-degree family history of breast cancer), high blood pressure, liver disorders (such as benign liver tumours), diabetes, gallstones, migraine or severe headaches, systemic lupus erythematosus, epilepsy, asthma, otosclerosis, very high blood triglycerides, fluid retention due to heart or kidney problems, hereditary angioedema (which may be triggered or worsened by estrogen-containing products).
Seek immediate medical attention if you develop symptoms of angioedema such as swelling of the face, tongue, or throat, difficulty swallowing, or hives with breathing difficulty.
Stop taking this medicine and consult a doctor immediately if you experience: Jaundice or worsening liver function, significant increase in blood pressure, new onset migraine-type headache, or pregnancy. Also seek urgent help if signs of blood clots occur, such as painful swelling and redness in the legs, sudden chest pain, or shortness of breath.
HRT and Cancer Excessive thickening of the uterine lining (endometrial hyperplasia) and endometrial cancer may occur. Estrogen-only HRT increases this risk, but the progestogen in this medicine helps reduce it.
Irregular Bleeding Irregular bleeding or spotting may occur during the first 3–6 months of treatment. If it continues beyond 6 months, consult your doctor.
Breast Cancer Combined estrogen-progestogen and possibly estrogen-only HRT may increase the risk of breast cancer. The risk depends on duration of use and appears within a few years of treatment. It returns to normal within a few years (up to 5 years) after stopping therapy.
Blood Clots (Thrombosis)
- HRT users have a 1.3 to 3 times higher risk of blood clots in veins, especially during the first year. These can be serious or life-threatening if they reach the lungs.
- Inform your doctor if you: are immobile due to surgery, injury, or illness; are severely overweight (BMI >30 kg/m²); have a clotting disorder requiring long-term anticoagulant therapy; have a family history of blood clots; have systemic lupus erythematosus; or have cancer.
Heart Disease (Heart Attack) There is no evidence that HRT prevents heart attacks. Women over 60 using estrogen-progestogen HRT may have a slightly increased risk of heart disease compared to non-users.
Stroke HRT users have about a 1.5 times higher risk of stroke than non-users. The risk increases with age.