Skip to content
Tapazole

Tapazole

Thiamazole

Thiamazole tablets for an overactive thyroid. It reduces thyroid hormone production.

Active ingredient
Thiamazole
Route
Oral use
Form
Tablet
Strengths
5mg

This listing uses Tapazole as a reference name. A generic equivalent is supplied; its exact brand and manufacturer are confirmed before supply.

Prescription and consultation requirements for Tapazole vary by destination and are determined by the fulfilment partner.

Tapazole details

Alternative names
methimazole
Therapeutic class
Antithyroid Agent
Pharmacological class
Thiourea Antithyroid
Contraindications
severe bone marrow depression; history of methimazole-induced pancreatitis
Minor side effects
nausea; headache; skin rash
Moderate side effects
joint pain; taste disturbances; loss of hair
Dosage forms
Tablet
Administration route
Oral use
Supply category
Prescription-only medicine (POM)
Originator
King Pharmaceuticals
Onset Time
1–2 weeks
Duration
12–24 hours
Storage instructions
Store below 25°C.
Drug interactions
Warfarin; Theophylline; Digoxin
Age restrictions
Approved for paediatric and adult populations.
Serious side effects

agranulocytosis, requires immediate medical attention; acute pancreatitis, requires immediate medical attention; severe hepatotoxicity, requires immediate medical attention

Patient summary

Thiamazole tablets for an overactive thyroid. It reduces thyroid hormone production.

Mechanism of action

Inhibits thyroid peroxidase, preventing the iodination of tyrosine and synthesis of thyroid hormones.

Pregnancy and breastfeeding

Pregnancy: High risk of fetal cutis aplasia in first trimester; propylthiouracil preferred. Breastfeeding: Monitor infant.

What you will receive

Tapazole is used here as a reference originator brand name to identify the medicine. We are not affiliated with the brand owner, and this listing does not offer the originator product.

  • The supplied product is a generic equivalent containing Thiamazole, not the originator brand shown as the reference.
  • The exact generic brand, manufacturer and dispatch location are confirmed based on the product, destination and available manufacturer or partner warehouse.
  • Check the final product details at checkout before confirming an order.

How we compare medicine brands and generics