Thyroxine: Uses, Dosage, Side Effects, Price, Composition, Precautions & More

What Is Thyroxine?

Thyroxine contains Levo-Thyroxine as it’s active ingredient.

Thyroxine Tablet is similar to the hormone produced by the thyroid gland. It is primarily used to treat Hypothyroidism, a condition where the thyroid gland does not produce sufficient quantities of hormones. It is also used to treat certain other disorders associated with the thyroid gland.

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Uses Of Thyroxine

Thyroxine is used for treating :

  • Hypothyroidism
  • Thyroid cancer
  • Myxedema coma

How Does Thyroxine Work?

Levothyroxine is the same as the natural hormone thyroxine, normally produced by the thyroid gland.

Levothyroxine tablets are given to replace the thyroxine that would normally be produced naturally by the thyroid gland. This returns levels of T3 and T4 to normal.

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How to Take Thyroxine?

Thyroxine tablets are meant to be taken orally, on empty stomach in the morning.

Common Dosage Of Thyroxine

You will need to have regular blood tests to monitor your thyroid hormone levels while taking levothyroxine; this helps your doctor to prescribe the correct dose to get your thyroid hormones into the normal range.

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When to Avoid Thyroxine& Precautions To Take?

  • Do not consume the medicine if you are allergic to it.
  • Thyroxine is contraindicated in the following conditions :
  • Thyrotoxicosis
  • Adrenal insufficiency
  • Acute myocardial infarction
  • Use with caution in patients with cardio vascular disease.
  • Use with caution in patients with diabetes.
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Side Effects Of Thyroxine

Common side effects include :

  • Shaking and trembling of arms and feet
  • Headache
  • Nausea and Vomiting
  • Diarrhea
  • Abdominal cramps
  • Nervousness and irritability
  • Sleeplessnes
  • Excessive sweating
  • Fever
  • Changes in menstrual cycle
  • Temporary hair loss
  • Chest pain and discomfort
  • Rapid or irregular heartbeat
  • Thyrotoxic crisis
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Effect on Organs?

Thyroxine tablet replaces the natural Thyroxine hormone produced in the body.

Reported Allergic Reactions?

Allergic reactions to the drug have been reported. Symptoms include difficulty in breathing, severe skin rashes, headache, dizziness, dry mouth, fever etc. Seek immediate medical attention in such cases.

Drug Interactions to be careful about?

Thyroxine shows interaction with the following drugs :

  • Carbamazepine
  • Phenytoin
  • Warfarin
  • Ethinyl Estradiol
  • Rifampicin
  • Epinephrine
  • Phenobarbital
  • Insulin and other anti diabetic medicines
  • Ketamine
  • Testosterone
  • Amphetamine
  • Antacids

Shows Effects/Results In

Onset of action can be seen within 3-5 days of oral administration. Upon intravenous injection, the effect can be observed within 6-8 hours.

Duration of effectof the medicine in the body is subject to vary based on the thyroid hormone levels.

Storage Requirements for Thyroxine

Store at room temperature, away from heat and direct sunlight.

Keep away from reach of children and pets.

Pro Tips When Taking Thyroxine

Your dose is likely to change over the course of treatment based on the response and tolerance. It may take several weeks before this medicine starts to show its effect. Do not stop the use of this medicine even when the symptoms resolve or improve unless instructed by the doctor.

Frequently Asked Questions

Is Thyroxine addictive?


Can I have Thyroxine with alcohol?


Any particular food item to be avoided?

Yes, food items containing calcium may reduce the effects of this medicine if both are taken together. There should be a minimum time gap of 4 hours between the consumption of these food items and Thyroxine tablet

Can I have Thyroxine when pregnant?


Can I have Thyroxine when feeding a baby?


Can I drive after taking Thyroxine?


What happens if I overdose on Thyroxine?

Seek medical attention upon over dosing of medicine.

What happens if I eat expired Thyroxine?

No major side effect is seen upon consumption of a single dose of expired medicine. However, if you notice any severe side effects, immediately inform your doctor.

What happens if I miss a dose of Thyroxine?

Take the missed dose as soon as you remember.

If it’s almost time for your next dose, skip the missed dose

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