Patient Leaflet Updated 30-Jul-2026 | Flamingo Pharma (UK) Ltd
Methyldopa 250mg and 500mg tablets
Methyldopa Tablets B.P. 250 mg & 500 mg
(referred to as Methyldopa Tablets in the remainder of the leaflet)
methyldopa
1. What Methyldopa Tablets are and what they are used for
2. What you need to know before you take Methyldopa Tablets
3. How to take Methyldopa Tablets
4. Possible side effects
5. How to store Methyldopa Tablets
6. Contents of the pack and other information
The name of this medicine is Methyldopa Tablets.
Methyldopa, the active ingredient in these tablets, belongs to a group of medicines called antihypertensives. These medicines work by lowering blood pressure. Methyldopa Tablets may be used for the treatment of severe hypertension (high blood pressure).
Do not take Methyldopa Tablets if any of the above applies to you. If you are not sure talk to your doctor or pharmacist before taking Methyldopa Tablets.
Talk to your doctor or pharmacist before taking this medicine if you have:
Check with your doctor while taking this medicine if you are going to have:
Your doctor may do blood tests to check how your liver is working during the first 6 - 12 weeks. He or she may use similar tests if you have a fever at any time while you are taking Methyldopa tablets. Tell your doctor you are taking Methyldopa tablets if you have a laboratory test where a urine or blood sample is taken. This is because Methyldopa tablets may affect the results of some types of tests.
Rarely, in patients taking Methyldopa tablets urine may darken when it is exposed to air after voiding.
If you are not sure if any of the above applies to you, talk to your doctor or pharmacist before taking Methyldopa tablets.
Please tell your doctor or pharmacist if you are taking or have recently taken any other medicines, including medicines obtained without a prescription as some drugs affect each other's action. This include herbal medicine
Do not take Methyldopa tablets if you are taking a type of medicine called a 'monoamine oxidase inhibitor' (MAO inhibitor) used to treat depression.
It is particularly important that you tell your doctor or pharmacist if you are taking any of the following before taking Methyldopa tablets
If you are not sure if any of the above applies to you, talk to your doctor or pharmacist before taking Methyldopa tablets.
If you have to have surgery, including dental, that requires an anaesthetic, you must inform the dentist or hospital that you are taking Methyldopa tablets.
You must tell your doctor if you are pregnant, if you think you are pregnant or if you intend to become pregnant.
Your doctor will then decide whether you should take this medicine.
Methyldopa passes into breast milk, therefore, if you are breast-feeding, this medicine should be avoided. Your doctor will be able to discuss this with you to determine whether the anticipated benefits are worth the possible risks.
Methyldopa Tablets may make you feel drowsy or light-headed. If this occurs, you should avoid driving or using machinery.
You are advised not to drink alcohol while taking Methyldopa tablets. Discuss this with your doctor if you have any questions.
These tablets contain lactose. If you have been told by your doctor that you have an intolerance to some sugars, contact your doctor before taking this medicine.
Always take Methyldopa Tablets as your doctor tells you to. Check with your doctor or pharmacist if you are not sure.They will prescribe a suitable dose for you. The dose your doctor prescribes will depend on the nature of your illness, your reaction to the medicine, your age and body weight. Your doctor will find the lowest dose to control your symptoms.
You should take this medicine by mouth and exactly as advised by your doctor or pharmacist. The amount you take each day will depend upon your condition. It is very important to continue taking Methyldopa tablets for as long as your doctor has prescribed. Do not take more or less than your doctor has prescribed.
The usual doses of Methyldopa tablets are:
Adults and children over 12 years:
Children under 12 years:
The doctor will work out the number of tablets. The dose is based on the weight of the child.
Elderly:
If you take too much medicine or someone else accidentally takes your medicine, contact your doctor, pharmacist or nearest hospital straight away. Symptoms of overdose may include lowered blood pressure, drowsiness, weakness, reduced heart rate, dizziness, light-headedness (i.e. feeling faint), gastrointestinal disturbances e.g. constipation, bloating, flatulence, diarrhoea, nausea and vomiting.
If you forget to take one dose, you should never make up for the missing dose by doubling the dose next time. Instead you should simply continue with the next dose when it is due.
Do not stop taking Methyldopa Tablets without talking to your doctor.
If you have any further questions on the use of this product, ask your doctor or pharmacist.
Like all medicines, Methyldopa Tablets can cause side effects, although not everybody gets them. If any of the following happens, stop taking Methyldopa Tablets and tell your doctor immediately or go to the casualty department at your nearest hospital:
This is a very serious side effect. You may need urgent medical attention or hospitalisation.
Tell your doctor as soon as possible, if you notice any of the following serious side effects such as:
The following reactions have also been reported:
Blood:
Nervous system:
Nose and chest:
Stomach and gut:
Skin and hair:
Joints and muscles:
Infections:
General:
Sexual:
Psychiatric:
Laboratory tests:
Results could show:
Methyldopa Tablets may also interfere with the interpretation of certain blood and urine tests.
The frequency of all the possible side effects listed above is classed as 'not known', which means that it cannot be estimated from the available data.
If you get any side effects, talk to your doctor or pharmacist. This includes any side effects not listed in this leaflet. You can also report side effects directly via the Yellow Card Scheme Website: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store.
By reporting side effects, you can help provide more information on the safety of this medicine.
Do not store above 25ºC. Store in the original package in order to protect from light.
Keep this medicine out of the sight and reach of children.
This medicine must not be used after the expiry date on the pack. Return any left over medicine to your pharmacist. Only keep it if your doctor tells you to.
Medicines should not be disposed of via wastewater or household waste. Ask your pharmacist how to dispose of medicines no longer required. These measures will help to protect the environment.
The active substance is methyldopa. Each film-coated tablet contains either 250 mg or 500 mg of the active substance.
The tablets also contain citric acid, lactose monohydrate, maize starch, talc, magnesium stearate, stearic acid, hypromellose, macrogol 400, titanium dioxide (E171), yellow iron oxide (E172) and silica colloidal anhydrous (500mg only).
Methyldopa Tablets B.P. 250 mg are round yellow film-coated biconvex tablets.
Methyldopa Tablets B.P. 500 mg are round yellow film-coated biconvex tablets, each having 'M500' debossed on one side.
Methyldopa Tablets BP 250 mg and 500 mg are packed in blister strips in cartons containing 28 or 56 tablets.
Note: not all strengths and / or pack sizes may be available in all markets.
Other formats
To request a copy of this leaflet in Braille, large print or audio please contact the licence holder at the above address.
PL 43461/0092 Methyldopa Tablets B.P. 250 mg
PL 43461/0093 Methyldopa Tablets B.P. 500 mg
The Leaflet was last revised in June 2026.
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