Other Products - HPTapazol® – Healthcare Professionals - GrupoFarma Ecuador


Thiamazole (methimazole) 5 mg.

Box x 100 tablets of 5 mg each.

Medical treatment of hyperthyroidism.

How to use
It is given in 3 equal doses at intervals of approximately 8 hours.


  • Daily starting dose
  • Mild hyperthyroidism (15mg)
  • Moderately severe hyperthyroidism (30 to 40 mg)
  • Severe hyperthyroidism (60mg)
  • Maintenance treatment is 5 to 15 mg daily.


  • Initial daily dose is 0.4 – 1 mg per kg of weight.
  • Maintenance dose is approximately half of the starting dose.
  • Treatment prior to thyroidectomy (before thyroid removal): 10-15 mg daily.

Thiamazole is contraindicated when there is hypersensitivity to the drug and in mothers during lactation, since the drug is excreted in milk.

Adverse Reactions
Urticaria, nausea, vomiting, arthralgia, headache, vertigo. More severe but very rare reactions: Agranulocytosis, hepatitis, lupus-like syndrome. Nephritis. Hypoprothrombinemia. Product of delicate use, see internal leaflet of the drug.


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The information provided on this website was prepared by GrupoFarma S.A. and directed exclusively to medical personnel and health professionals. It may NOT be considered general use for people, nor as medical advice, recommendations or medical advice of any kind. We suggest not to self-medicate and consult your doctor beforehand about any concerns related to the information on the products or drugs mentioned here. Laboratories Farma S.A. will not be responsible for the misuse that third parties may give to the information obtained here.