Thyroactiv 12.5mcg Tablet 100.0 tablets in 1 bottle

Last Updated: December 16th, 2025

Thyroactiv 12.5mcg Tablet is a product of Leeford Healthcare Ltd

Composition: Thyroxine (12.5mcg)

Pack of 100 tablet

₹ 126.50

Note: MRP can vary depending up on batch!

*MRP inclusive of all taxes

All Details About Thyroactiv 12.5mcg Tablet

Find out detailed description, uses, directions of use, side effects, warnings and precautions, frequently asked questions about Thyroactiv 12.5mcg Tablet

Description:

Thyroactiv 12.5mcg Tablet is a medicine used to treat an underactive thyroid gland (hypothyroidism). It replaces the hormone which is not being produced by your thyroid gland in sufficient quantity and helps regulate your body’s energy and metabolism.

Earlier you start taking Thyroactiv 12.5mcg Tablet, your doctor will do a blood test to see what dose you need. Once you start taking the medicine, you will have regular blood tests to see how well it is working, and the dose may be adjusted from time to time. It is best taken on an empty stomach before your first meal of the day. You should take this medicine regularly to get the maximum benefit. It may take several weeks before your symptoms start to improve. You may need to take it for the rest of your life. If you stop taking it, your symptoms are likely to come back.

The most common side effects of this medicine are caused by taking a higher dose than you need. Possible side effects include palpitations (irregular heartbeat), vomiting, anxiety, diarrhea, weight loss, tremors, increased appetite, and restlessness. Most side effects will disappear once you are on the right dose. Call your doctor straight away if you have a very high temperature, fast or irregular heart rate, low blood pressure, yellowness in the eye/skin, confusion, or fits.

Thyroactiv 12.5mcg Tablet may cause weight loss but should not be prescribed or taken to treat obesity. If you become pregnant while taking this medicine, inform your doctor right away as the dose may have to be increased/readjusted. Many other drugs affect the way this medicine works. Ask your doctor for advice if you are taking any other medications.

Uses:

Hypothyroidism

Directions For Use:

Take this medicine in the dose and duration as advised by your doctor. Swallow it as a whole. Do not chew, crush or break it. Thyroactiv 12.5mcg Tablet is to be taken on an empty stomach.

Side Effects:

Most side effects do not require any medical attention and disappear as your body adjusts to the medicine. Consult your doctor if they persist or if you’re worried about them

Ordinary side effects of Thyroactiv

Electrolyte imbalance
Dizziness
Chubbyigue
Muscle cramp
Headache

Warning & Precautions:

Alcohol

SAFE

Consuming alcohol with Thyroactiv 12.5mcg Tablet does not usually cause any harmful side effects.

Pregnancy

SAFE IF PRESCRIBED

Thyroactiv 12.5mcg Tablet is safe to use during pregnancy. Most studies have shown low or no risk to the developing baby.

Breast feeding

SAFE IF PRESCRIBED

Available human data suggest that the drug does not pass into breast milk in clinically significant amounts and is unlikely to harm the infant.

Driving

SAFE

Thyroactiv 12.5mcg Tablet does not usually affect your ability to drive.

Kidney

CONSULT YOUR DOCTOR

There is limited data available on the use of Thyroactiv 12.5mcg Tablet in patients with kidney disease. Please consult your doctor.

Liver

CONSULT YOUR DOCTOR

There is limited data available on the use of Thyroactiv 12.5mcg Tablet in patients with liver disease.

FAQs:

What should I do if I accidentally take more than the dose required?

An overdose of this medicine may cause nervousness, anxiety, rapid heartbeat, hand tremors, excessive sweating, weight loss, and sleep problems. You should immediately consult your doctor in case of an overdose.

How long do I need to take Thyroactiv 12.5mcg Tablet?

You should take Thyroactiv 12.5mcg Tablet as long as your doctor has recommended. Usually, it is prescribed for the long term and you may have to take it lifelong. Do not stop taking the medicine, as your symptoms of low levels of thyroid hormone may reoccur.

How should Thyroactiv 12.5mcg Tablet be taken?

Take Thyroactiv 12.5mcg Tablet exactly as advised by your doctor. Thyroactiv 12.5mcg Tablet should be taken orally preferably before breakfast or as a first meal of the day. It should be swallowed whole with plenty of water.

Being a diabetic what should I be aware of while taking Thyroactiv 12.5mcg Tablet?

Thyroactiv 12.5mcg Tablet may raise blood sugar levels and may affect the working of other anti-diabetic medicines which you might be taking. Hence, dose adjustment may be required. Consult your doctor who will help you with dose management.

Does Thyroactiv 12.5mcg Tablet affect contraception?

Oral birth control pills, which contain both estrogen and progesterone may reduce the amount of Thyroactiv 12.5mcg Tablet in your body and therefore the dose of Thyroactiv 12.5mcg Tablet may have to be increased.

What are the side effects of taking Thyroactiv 12.5mcg Tablet?

The side effects of Thyroactiv 12.5mcg Tablet are mostly seen when it is taken at high doses. These symptoms include allergic reaction, headache, vomiting, flushing, high temperature, sweating, weight loss, tremor, restlessness, and excitability. It may also cause difficulty in sleeping (insomnia), increased pressure around the brain in children (benign intracranial hypertension), chest pain (angina), pounding, irregular or fast heartbeat, diarrhea, muscle cramps, and muscle weakness. The other side effects related to Thyroactiv 12.5mcg Tablet include deformity of the skull in infants caused by the early closure of joints in the skull bone (craniostenosis), growth in children may slow or stop due to changes in bone growth, irregular periods, intolerance to heat, and temporary hair loss in children.

What does thyroxine do? Why is it important?

Thyroxine hormone controls how much energy your body uses. It plays an important role in regulating your body weight, muscle strength, body temperature, and even your mood. Along with that, it is important for your digestion, heart muscles, brain development, and bone health.

Written by:
Dr. T. Sharmila Krishna
M.B.B.S., MD (Biochemistry)

Reviewed by:
Dr. Sureshbabu Yadav
M.B.B.S., DIP.DIAB, F.R.S.H

Disclaimer:

Getomeds primary intention is to ensure that its consumers get information that is reviewed by experts, accurate, and trustworthy. The information and contents of this website are for informational purposes only. They are not intended to be a substitute for professional medical advice, diagnosis, or treatment. Please seek the advice of your doctor and discuss all of your concerns about any disease or medication. Do not disregard or postpone seeking professional medical advice because of something you read on Getomeds. Our mission is to support, not replace, the doctor-patient relationship.