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Thyroxine - Indications, Dosage, Side Effects and Precautions

Written & Compiled by Anushta Chandrapalan, M.Sc  | Medically Reviewed by The Medindia Medical Review Team
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Information about Thyroxine

Generic Name : Thyroxine
Pronunciation : thy-rox-ine
Latest prescription information about Thyroxine. Learn how to pronounce the drug's name, its indications, dosage, how to take, when to take, when not to take, side effects, special precautions, warnings and its storage instructions . Also listed are the International and Indian trade name(s) of the drug and its price list.
Therapeutic Classification : Thyroid And Antithyroid Agents

Trade Names/Brand Names of Thyroxine

India : 

International : 

Synthroid, Thyrax, Euthyrox, Levoxyl, Levothroid, Levaxin, L-Thyroxine, Eltroxin, Thyrox

Why is Thyroxine Prescribed? (Indications)

This medication is a thyroid hormone, prescribed for hypothyroidism, and thyroid cancer.  


When should Thyroxine not be taken? (Contraindications)

Contraindicated in patients with untreated hyperthyroidism, recent heart attack and hypersensitivity.

What is the dosage of Thyroxine?

Adults: Initial dose of 50-100mcg increased by 25-50 mcg at 3-4 weeks interval. Max: 150-300mcg daily.
Children: 25-150-mcg daily with 25mcg increments every 2-4 weeks.

How should Thyroxine be taken?

It comes as a tablet to take by mouth, on an empty stomach.

What are the warnings and precautions for Thyroxine?

• Caution should be exercised in patients with history of difficulty in swallowing, heart disease, high blood pressure, bleeding disorder, anemia, sugar, osteoporosis, fertility problems, other thyroid problems, any allergy, who are taking other medications, during pregnancy and breastfeeding.

Monitor blood sugar regularly while taking this medication.

What are the side effects of Thyroxine?

Nervousness, excitability, tremor, muscle weakness, cramps, increased sweating, flushing, heat intolerance, headache, insomnia, rapid heart rate, palpitations, chest pain, excessive weight loss, menstrual irregularities, diarrhea and vomiting.

What are the other precautions for Thyroxine?

Avoid excess dosage.

What are the storage conditions for Thyroxine?

Store it at room temperature.

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TAB THYROXINE SODIUM 50 MCG [THYRONORM] should be taken empty stomach. But the site is silent about the time period as to duration of empty stomach for best result ?

BMRAO, India

I am taking thyronorm for last 2.5 years in the morning on empty stomach as per doctor prescription. But I have also been taking one litre water on empty stomach for last 5 years. Is it ok taking thyronorm with one litre water.

RahulDCSA, India

Hi,I want to know that for how long will take Thyronorm 25 mg,as my 6 month child have suggest by doctor but now report was normal and doctor said we want to give it continuously till 2 year.

Drug Price
Thyrox (0.05mg)

Macleods Pharmaceuticals Ltd
Thyrox (0.2mg)

Macleods Pharmaceuticals Ltd.
Thyronorm (75 mcg)

Abbott Healthcare Pvt. Ltd.
Synox (0.037 mg)

Neon Laboratories Limited

Neon Laboratories Limited
Thyronorm (125mcg)

Abbott Healthcare Pvt. Ltd.
Thyronorm (100 mcg)

Abbott India Ltd

Macleods Pharmaceuticals Ltd
Thyronorm (12.5 mcg)

Abbott India Ltd

Zydus Takeda Healthcare Pvt. Ltd.
View all
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