What does it do?

Propylthiouracil is used to reduce the amount of hormone made by your thyroid gland.

How should you take it?

Take propylthiouracil regularly as directed with a glass of water.

What if you forget a dose?

Take the missed dose as soon as possible. If it is close to the time for your next dose, skip the missed dose and carry on as normal. Do not take two doses at the same time.

Can you take other medicines?

Some medicines available without a prescription may react with propylthiouracil including:

• iodine supplements (e.g. Iodine/Lugol’s solution®)

Tell your pharmacist or doctor about all medicines or treatments that you may be taking including vitamins, herbal products (e.g. kelp power) or recreational drugs. Avoid foods such as seaweed or kelp that may contain iodine.

What side effects might you notice?

Side Effects	Recommended action
Reduced number of blood cells that fight infections or help your blood to clot - symptoms include: fever, chills, sore throat or generally feeling unwell, or easy or unusual bruising or bleeding Symptoms of liver problems including: yellow skin or eyes, itching, dark urine, pale bowel motions, abdominal pain	Tell your doctor immediately
Headache Hair loss or thinning Joint, muscle or bone aches and pains Stomach upset	Tell your doctor if troublesome

If you notice any other effects, discuss them with your doctor or pharmacist.

Other information:

• Tell your doctor if you have liver or kidney problems, or a blood disorder.
• Tell your doctor if you are pregnant, planning to become pregnant, or breastfeeding.
• Propylthiouracil is not registered for use in New Zealand. Discuss with your doctor.