Safely Buy Propylthyracil ( Propylthiouracil ) from Canada Prescriptions Plus.


Propylthyracil is a thyroid medication used to treat hyperthyroidism, Grave’s disease, and toxic goiter.

Propylthiouracil is an anti-thyroid drug that inhibits your body’s production of new thyroid hormones to regulate and manage hormone levels in your thyroid glands as well as those circulating in your blood. This inhibitory action allows Propylthyracil to treat not only hyperthyroidism but other conditions such as Grave’s disease and goiter.

This thyrostatic medication is an effective treatment for various thyroid conditions related to high hormone levels. Propylthyracil has been found to be a safe choice and alternative to methimazole during pre-pregnancy months and the first 16 weeks of gestation.

Uses and Dosage

The dose of Propylthyracil that is prescribed will vary depending on the individual and thyroid condition being treated. Follow all your doctor’s instructions and read packaging labels carefully.

  • Swallow tablet whole
  • Most adults take an initial dose of 300mg daily
  • Maintenance doses range between 100 and 150mg each day
  • Adults should not take more than 900mg a day
  • Daily Propylthyracil doses are divided into 3 doses 8 hours apart
  • You will need frequent blood tests during treatment
  • Call your doctor if you notice unusual bruising or bleeding or any signs of infection
  • Tell your doctor about any planned surgeries
  • Store at room temperature away from moisture and heat
  • Keep away from children and pets

Side Effects

Propylthyracil may cause some side effects to develop while lowering your levels of thyroid hormones. Speak with your doctor for more specific information relating to any symptoms you might encounter when taking propylthiouracil.

Common Propylthyracil side effects:

  • Nausea, vomiting, stomach pain
  • Itching or tingling, nerve pain
  • Joint or muscle pain
  • Swollen glands
  • Headache, drowsiness, dizziness
  • Swelling in hands or feet
  • Decreased sense of taste
  • Hair loss

Serious Side Effects

Some more serious adverse effects may occur when taking propylthiouracil. Stop using Propylthyracil and call your doctor right away if you develop any of the following symptoms:

  • Fever, chills, sore throat, mouth sores, feeling light-headed
  • Unusual bleeding
  • Purple or red skin discolouration
  • Skin rash, pain, or swelling
  • Pink or dark urine, foamy urine, little or no urination
  • Shortness of breath, coughing blood
  • New or worsening lupus symptoms (joint pain, skin rash on your cheeks or arms that worsens in sunlight)

Propylthiouracil may cause damage to your liver, especially during the first 6 months of treatment, which can be fatal. Stop taking this anti-thyroid medication and call your doctor immediately if you develop any of the following signs of liver damage:

  • Nausea, vomiting, upset stomach
  • Itching
  • Fever, tiredness
  • Loss of appetite
  • Dark urine, clay-coloured stools
  • Jaundice

Allergic Reactions

Do not take Propylthyracil if you are allergic to propylthiouracil. If you develop an allergic reaction, stop using this medication and call your doctor.

Propylthyracil allergy symptoms may include:

  • Hives
  • Difficulty breathing
  • Swelling of face or throat
  • Fever
  • Sore throat
  • Burning eyes, skin pain
  • Red or purple rash
  • Blistering and peeling skin


Propylthiouracil can cause damage to your liver. Stop using this medication and call your doctor right away if you have any signs of liver damage. Symptoms include upper stomach pain, nausea, vomiting, loss of appetite, fever, itching, tiredness, dark urine, clay-coloured stool, or jaundice.

Propylthiouracil may impair your reactions; avoid driving or performing any taks that may be hazardous until you know how this medication will affect you.

Before taking Propylthyracil, tell your doctor if you have ever had liver problems to ensure your safety.

Some drugs can interact with propylthiouracil and cause adverse effects. To ensure your safety, tell your doctor about all the medications you take, including over the counter medicines, but especially any of the following:

  • Digoxin
  • Theophylline
  • Heart or blood pressure medication
  • Blood thinner

In very rare cases propylthiouracil has caused liver failure and death in pregnant women who took this medication during their second or third trimester. Make sure you tell your doctor if you are pregnant or plan to become pregnant while taking this medication.

Consult with your doctor before breastfeeding while taking this anti-thyroid medication.

Do not give Propylthyracil to a child without first speaking with a doctor. Propylthiouracil can cause liver failure in children but has been used with those when other medications are not effective.

Form and Strength

This anti-thyroid medication is available in tablet form.

Propylthyracil tablet strength:

  • 50mg

The 50mg Propylthyracil tablets are available in quantities of 100.


How does Propylthyracil work?

Propylthyracil uses the anti-thyroid drug propylthiouracil to inhibit the production of certain thyroid hormones in your thyroid gland. The medication does this by affecting thyroid enzymes which allows it to manage and regulate thyroid hormone levels.

What to avoid when taking propylthiouracil?

You should avoid driving and performing any tasks that require alertness or that could be hazardous until you know how taking propylthyracil will affect you. Propylthiouracil may impair your reactions and thinking.



Additional information

Brand Name:


Scientific Name:


Other Names:




Quantities Available: