Can I take Oestrogel pump-pack and Solifenacin together?

Why this happens

Oestrogel is a hormone replacement therapy (HRT) absorbed through the skin, while solifenacin is an antimuscarinic medicine used for overactive bladder. They do not compete for the same metabolic enzymes or interfere with each other's effects.

What you should do

You can safely use these two medications together. Always follow the dosage instructions provided by your doctor for both treatments. If you notice any new or unusual symptoms, or if your bladder symptoms do not improve, consult your healthcare professional.

Important precautions

Blood clots and breast cancer

You must not use Oestrogel if you have ever had breast cancer, or if you have ever had a blood clot in a vein (thrombosis) or the lungs (pulmonary embolism).

Oestrogel slightly increases your risk of blood clots (DVT/PE), stroke, and breast cancer. Seek immediate medical help if you experience sudden chest pain, breathlessness, or painful swelling in one leg.

Unexplained vaginal bleeding

Do not use Oestrogel if you have any vaginal bleeding that has not been checked and explained by your doctor.

Skin contact transfer

Do not allow other people, especially children, to come into contact with the area of skin where you applied the Oestrogel. Cover the area with clothing once dry to prevent accidental hormone transfer.

Urinary retention

Do not take solifenacin if you have difficulty emptying your bladder (urinary retention), as it may make this problem worse.

Glaucoma

Do not take solifenacin if you have narrow-angle glaucoma, as it can significantly increase the pressure in your eye and worsen the condition.

Food and drink warnings

Alcohol

It is best to avoid or strictly limit alcohol while taking these medicines. Alcohol can worsen the side effects of solifenacin, such as dizziness or drowsiness. Additionally, regular alcohol consumption can increase the risk of liver damage when taking long-term medications and may interfere with the way oestrogen is processed in your body. Additionally, long-term alcohol consumption combined with Hormone Replacement Therapy (HRT) is linked to a higher risk of breast cancer.

Grapefruit juice

Grapefruit juice can interfere with how your body breaks down estradiol. This can lead to higher levels of the medicine in your bloodstream, potentially increasing the risk of side effects such as breast tenderness, nausea, or headaches.

Grapefruit juice can increase the amount of solifenacin in your blood, which may increase the risk of side effects like dry mouth, blurred vision, or constipation. It is best to avoid drinking large amounts of grapefruit juice while taking this medicine.

Caffeine (Coffee, Tea, Energy drinks)

Solifenacin is used to treat overactive bladder symptoms. Caffeine is a natural diuretic and bladder irritant, which can make your symptoms worse and reduce the effectiveness of your treatment. You should try to limit your caffeine intake.

Using other medicines

Taking multiple medicines? Our Medicines Interaction Checker helps you check whether your prescriptions, over-the-counter medicines, and supplements are safe to take together. Simply search for your medicines to see potential interactions and what to do about them.

Disclaimer

This information is for general educational purposes only and should not be relied upon as a substitute for professional medical advice. Always consult your GP, pharmacist, or another qualified healthcare professional before making decisions about your medications. Individual circumstances may vary, and only a healthcare professional who knows your medical history can provide personalised guidance.