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Generic Name: Methyldopa
Product Name: Aldomet


Aldomet is used to treat high blood pressure.


Aldomet works to lower your blood pressure by controlling impulses along several nerve pathways. This causes your blood vessels to relax and widen so that blood passes through them more easily.
You may be given Aldomet for another reason. Ask your doctor if you are unsure about why Aldomet has been prescribed for you.

Dose advice

  • You should follow all instructions given to you by your doctor and pharmacist carefully.
  • For adults, the usual starting dose is 250 mg, taken two or three times a daily. Depending on how your blood pressure responds, your doctor may increase or decrease your dose.
  • For children, the starting dose depends on body weight, which is taken two to four times daily. Depending on how your child’s blood pressure responds, your doctor may increase or decrease your child’s dose.
  • You should swallow Aldomet with a glass of water or other liquid.


schedule 4

Common side effects

All medicines have side effects. Most commonly the side effects are minor however some can be more serious. Usually the benefits of taking a medication outweigh the associated side effects. Your doctor would have considered these side effects before starting you on Aldomet.
Common side effects are those which occur in more than 1% of patients given Aldomet. These include;

  • dizziness
  • light-headedness
  • drowsiness
  • headache 
  • weakness

Uncommon side effects

Side effects which occur in less than 1% of patients given Aldomet are considered uncommon. Patients do not necessarily experience any of these side effects do not become alarmed by this list:

  • fever shortly after starting to take Aldomet, e.g. within the first 3 months
  • yellowing of the skin and eyes, also known as jaundice 
  • darker urine than normal due to liver problems
  • pale stools
  • swelling of the feet or lower legs
  • nightmares, depressed or feeling strange signs of frequent infections such as fever, severe chills, sore throat or mouth ulcers
  • bruising more easily than normal
  • signs of anaemia, such as tiredness, short of breath, and looking pale
  • numbness, tingling, pain, or weakness in your hands or feet
  • itchy skin rash or other skin problems
  • hypotension
  • worsening of angina (chest pain)
  • larger breasts than normal, especially in men

If you experience any of the listed side effects or any other symptoms which appear abnormal or unusual please tell your doctor.


  1. Australian Medicines Handbook 2007, Adelaide, Pharmaceutical Society of Australia, 2007.
  2. MIMS Online. [Monograph online] MIMS Australia Pty Ltd 2003. [Cited May 31, 2008]. Available from: [URL Link]

For further information talk to your doctor.

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Posted On: 22 July, 2003
Modified On: 18 March, 2016
Reviewed On: 26 June, 2008

Created by: myVMC