Mirabegron relaxes the muscles of the bladder.
Doctors prescribe Betmiga 50 MG to treat symptoms of overactive bladder (OAB) in adults.
Trade Information
Mirabegron has been on the international market since 2013. It is available on prescription tablets under the brand name Betmiga.
How should I use Betmiga?
How?
Swallow the tablet whole with half a glass of water. Do not chew or crush the tablets.
When?
Choose a fixed time, then you are less likely to forget a dose.
How long?
After 6 weeks it should be clear whether this medicine works for you. Do you notice an insufficient effect? Then consult your doctor. Perhaps another medicine is more suitable for you. Does the medicine work well for you? Then you can use it for a long time.
What side effects should I watch out for?
In addition to the desired effect, this medicine can have side effects.
The main side effects are the following.
Rarely:
- Infection of the urinary tract, cystitis. Consult your doctor if you get pain when urinating, and if you get abdominal pain or fever. In rare cases, you may not be able to empty your bladder. Then warn a doctor.
- Gastrointestinal complaints, such as nausea, constipation or diarrhea. Very rarely stomach pain, abdominal pain. Do you get nauseous from this medicine? Then take it with some food.
- Headache, dizziness.
- Rapid heartbeat and very rarely high blood pressure. Before you start this medicine and regularly during treatment, your doctor will check your blood pressure.
Very rarely:
- Cardiac arrhythmias, such as an irregular heartbeat or atrial fibrillation (atrial fibrillation). Once in a while you may experience sudden dizziness or brief loss of consciousness. This is especially important for people with a certain heart rhythm disorder, namely the prolonged QT interval. Do NOT use this medicine if you have this heart rhythm disorder. Consult your doctor. You may be able to switch to another medicine.
- Vaginal infections, itching of the vagina. Do you notice more discharge from the vagina, or a painful or itchy vagina? Then consult your doctor.
- Painful, swollen joints.
- Insomnia.
- Skin rash, such as red spots or bumps. In rare cases, this indicates hypersensitivity. Consult your doctor if you have a skin rash.
Dark or purple spots on the skin. This can be caused by inflammation of the smallest blood vessels in the skin. Then consult your doctor. - Hypersensitivity to this medicine. You notice this among other things skin rash or hives. Then consult your doctor. In very rare cases, swelling of the eyelids, lips, mouth, tongue or throat may occur. This can make you short of breath. Then immediately warn a doctor or go to the Emergency department.
- If you are hypersensitive, you may not use this medicine in the future. Therefore, inform the pharmacist. The pharmacy team can then ensure that you do not get this medicine anymore.
Consult your doctor if you have too much trouble with one of the above side effects or if you experience other side effects that you are worried about.
Explanation of Frequencies
- Frequent: in more than 30 out of 100 people.
- Sometimes: 10 to 30 out of 100 people.
- Rarely: in 1 to 10 out of 100 people.
- Very rarely: in less than 1 out of 100 people.
Does Betmiga interact with other medications?
This medication interacts with another medication, namely metoprolol.
- The beta-blocker metoprolol. Mirabegron can increase the amount of metoprolol in the blood, causing you to experience more side effects from metoprolol.
- Are you using metoprolol for heart failure? Do not use the combination and consult your doctor. Your doctor can replace one of the two medications with another, so the interaction does not occur.
- Are you using metoprolol for high blood pressure, migraine, or other conditions? Discuss with your doctor whether another medication is more suitable. Do you have to use them together anyway? Then pay attention to the side effects of metoprolol: dizziness, slow heartbeat, or fainting. Warn your doctor if you experience these.
If I use Betmiga, Can I…
Be careful! Don’t mix driving, alcohol, and heavy eating with Betmiga..
Can I use Betmiga if I am pregnant or breastfeeding?
Pregnancy
Not enough is known about the use of this medication during pregnancy. Notify your doctor and pharmacist as soon as you are pregnant, or want to become pregnant soon. If possible, you can switch to another medication temporarily.
Breastfeeding
If you want to breastfeed, consult your doctor or pharmacist. It is not known whether this medication ends up in breast milk and whether it is harmful to the baby. Possibly the doctor can prescribe you another medication temporarily, of which it is known that you can use it safely.
What should I do if I miss a dose?
It is important to take this medication consistently. If you have missed a dose:
You take this medication once a day. Is it still more than 6 hours before you have to take the next dose? Then take the dose anyway. Is it less than 6 hours? Then skip the missed dose and continue with your normal schedule.
Can I just stop with Betmiga?
You can stop this medication all at once.
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