Thyroxium 12.5Mcg Tablet 120

Elder Prroject Limited

BOTTLE of 120 Units
BOTTLE of 100 Units

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Composition

Thyroxine (12.5 Mcg)

Strength:

25 MCG 12.5 MCG 50 MCG 75 MCG 100 MCG 125 MCG 150 MCG

Thyroxium 12.5mcg Tablet 120 is used to treat hypothyroidism (an underactive thyroid gland) in adults and children, including as a low starting dose for gradual titration, and to help manage goitre.

It contains levothyroxine sodium (12.5 mcg), a synthetic form of the thyroid hormone T4. Take it on an empty stomach in the morning, at least 30 minutes before food, at the same time each day; do not switch brands without your doctor's advice.

Keeping to all blood test appointments to monitor thyroid function, and following any calcium, iron or antacid timing advice from your doctor, support effective treatment alongside this medicine.

Tell your doctor about any heart disease, diabetes, adrenal gland problems or osteoporosis before starting. Report a fast or irregular heartbeat, unusual chest pain or persistent nervousness. Regular thyroid function tests are required.

Thyroxium 12.5mcg Tablet 120 is used to treat hypothyroidism in adults and children, including as a low starting dose for gradual titration, and to help manage goitre.

Uses of Thyroxium 12.5mcg Tablet 120 are:

Hypothyroidism: Replaces or supplements thyroid hormone in an underactive thyroid.
Starter Dose: Used as a low starting dose for gradual thyroid hormone replacement.
Goitre: Helps manage certain types of thyroid gland enlargement.

Follow these instructions while taking Thyroxium 12.5mcg Tablet 120:

Swallow one whole tablet with a full glass of water.
Avoid crushing or chewing the tablet.
Maintain a consistent schedule, taking it at the same time each day.
Consult your doctor before stopping or changing how you consume this medicine.

Thyroxium 12.5mcg Tablet 120 is taken orally.

Thyroxium 12.5mcg Tablet 120 may cause some side effects that are usually mild and go away as your body adjusts to the medicine.

A few common side effects of Thyroxium 12.5mcg Tablet 120:

Neurological: Headache, nervousness and heat intolerance. Resting and keeping well hydrated can help with headaches.
Cardiovascular: Rapid or irregular heartbeat.
General: Weight loss, increased appetite and excessive sweating.
Digestive: Loose motions (diarrhoea). Drinking plenty of fluids helps prevent dehydration.

If side effects do not improve or become serious, speak to your doctor right away.

Management Of Side Effects:

Most side effects are temporary and generally harmless, which resolve on discontinuing the use of Thyroxium 12.5mcg Tablet 120. However, if you experience any serious side effects or worsening of any of the symptoms, please consult your doctor.

Here are some tips to manage common side effects:

Headache: Taking the medication at the same time each day, preferably in the morning, may help reduce headaches.
Diarrhoea: Consider taking the medicine on an empty stomach at least 30 minutes before breakfast to minimise this effect.

Thyroxium 12.5mcg Tablet 120 contains levothyroxine (12.5 Mcg), which works on the body as follows:

Hormone Replacement: Levothyroxine is a synthetic version of the naturally occurring thyroid hormone thyroxine (T4), which replaces the missing hormone in people with hypothyroidism.
Conversion to Active Form: After being absorbed into your bloodstream, levothyroxine is converted into triiodothyronine (T3), the active form of thyroid hormone, by your liver and other tissues.
Cellular Regulation: The converted hormone binds to specific receptors in your body's cells, helping to regulate metabolism, growth, and development.
Metabolic Function: By providing an external source of thyroid hormones, levothyroxine helps restore normal metabolic function when your body cannot produce enough on its own.

Pregnancy

Caution is advised while taking Thyroxium 12.5mcg Tablet 120 if you are pregnant. It is best to consult your doctor before taking this medicine. Your dosage might need adjustment during pregnancy, as thyroid hormone requirements often change during this time.

Breastfeeding

Exercise caution while taking Thyroxium 12.5mcg Tablet 120 if you are breastfeeding. It is best to consult your doctor before taking this medicine. Small amounts of levothyroxine may pass into breast milk, but it is generally not harmful to the baby.

Alcohol

Caution is advised when consuming alcohol while taking Thyroxium 12.5mcg Tablet 120. Alcohol might interfere with how your body processes the medicine. Try to limit or avoid alcohol consumption during your treatment.

Liver

Exercise caution while taking Thyroxium 12.5mcg Tablet 120 if you have liver problems. The liver plays an important role in converting this medicine to its active form. Your doctor may need to monitor your thyroid levels more frequently if you have liver issues.

Kidney

Caution is advised before using Thyroxium 12.5mcg Tablet 120 if you have a history of any kidney problems. It is best to consult your doctor before taking this medicine.

Use In Driving And Operating Machinery

You can generally drive and operate machinery while taking Thyroxium 12.5mcg Tablet 120. However, if you experience dizziness or rapid heartbeat as side effects, avoid these activities until you feel better.

Allergy

Tell your doctor about any allergies you have before starting Thyroxium 12.5mcg Tablet 120. If you notice symptoms like rash, itching, or swelling after taking this medicine, seek medical help immediately, as these could indicate an allergic reaction.

Children

Caution is advised while giving Thyroxium 12.5mcg Tablet 120 to children. Always consult your doctor before giving this medicine to a child. Children may need different dosages and more frequent monitoring of thyroid levels.

Older Patients

Older patients should take this medication under medical supervision, as they may be more sensitive to its effects. Your doctor might start with a lower dose and gradually increase it. Regular monitoring of thyroid function is especially important for older adults.

Drug-Drug Interactions

Thyroxium 12.5mcg Tablet 120 can interact with the following medicines:

Calcium and iron supplements: These minerals, including calcium carbonate and ferrous sulphate, can significantly reduce the absorption of levothyroxine when taken at the same time.
Antidepressants: Medicines like sertraline and fluoxetine may alter the effectiveness of Thyroxium 12.5mcg Tablet 120, potentially requiring dosage adjustments.
Blood thinners: Warfarin and heparin may have enhanced effects when taken with Thyroxium 12.5mcg Tablet 120, potentially increasing the risk of bleeding.
Diabetes medicines: Metformin and insulin requirements may change when taking Thyroxium 12.5mcg Tablet 120, as thyroid hormones affect blood glucose levels.

Drug-Food Interactions

Thyroxium 12.5mcg Tablet 120 may interact with several foods that can reduce its absorption.

Soy products: Soy milk and tofu may interfere with levothyroxine absorption.
High-fibre foods: Whole grains and bran may reduce the effectiveness of Thyroxium 12.5mcg Tablet 120.
Walnuts: These nuts may decrease the absorption of the medicine.

Drug-Disease Interactions

Thyroxium 12.5mcg Tablet 120 can interact with the following diseases:

Untreated adrenal insufficiency: Taking Thyroxium 12.5mcg Tablet 120 without treating this condition first can trigger a dangerous adrenal crisis.
Acute myocardial infarction: Patients with recent heart attacks should use this medication with warning as it may worsen cardiac symptoms.
Diabetes: Thyroxium 12.5mcg Tablet 120 can affect blood sugar control, potentially requiring adjustments to diabetes medicine dosages.

Daily Dose

The daily dose of Thyroxium 12.5mcg Tablet 120 should be taken as prescribed by your doctor. The dosage may change based on individual factors such as age, weight, and severity of your condition. Follow the prescribed dosage without making changes unless your doctor advises.

Over Dose

Taking too much Thyroxium 12.5mcg Tablet 120 may cause headache, rapid heartbeat, excessive sweating, increased appetite, weight loss, and diarrhoea. If you experience these symptoms after taking more than prescribed, consult your doctor promptly.

Missed Dose

If you forget to take the medication, take it as soon as you remember. If it's nearly time for your next dose, skip the missed one and continue your regular schedule. Never take a double dose to make up for a missed one.

Keep away from moisture, heat, and direct light.
Store in the original packaging to protect from environmental exposure.
Keep out of reach of children.
Check the expiry date before use and discard any expired medicine.
Close the container tightly after each use.

Maintain consistent meal times and eating patterns to help regulate your metabolism if you have hypothyroidism, as this helps your body better utilise thyroid hormones.
Take calcium or iron supplements at least 4 hours apart from your Thyroxium 12.5mcg Tablet 120 dose, as these minerals can interfere with proper absorption of levothyroxine.

Fact Box

Dosage Forms Available	Tablet
Habit Forming	No
Ailment	Hypothyroidism, goitre, hormone imbalance
Drug Category	Thyroid hormone replacement
Therapeutic Category	Hypothyroidism treatment

What if I miss a dose of Thyroxium 12.5mcg Tablet 120?

Take it when you remember. If it's almost time for your next dose, skip the missed one. Never take a double dose to catch up.

How long does it take for Thyroxium 12.5mcg Tablet 120 to start working?

You might not notice changes immediately. It may take 2-4 weeks for your body to respond, with full effects appearing within 1-3 months.

Can I stop taking Thyroxium 12.5mcg Tablet 120 once my symptoms improve?

No. Hypothyroidism (underactive thyroid) typically requires lifelong management. Stopping could cause your symptoms to return, sometimes severely.

Are there dietary restrictions while taking Thyroxium 12.5mcg Tablet 120?

Avoid calcium, iron supplements, and soy products within 4 hours of taking Thyroxium 12.5mcg Tablet 120.

Can Thyroxium 12.5mcg Tablet 120 be used for weight loss?

No. This medicine replaces missing thyroid hormones in patients with hypothyroidism. It's not a weight loss product and shouldn't be misused this way.

Will Thyroxium 12.5mcg Tablet 120 interact with my other medicines?

Yes, several medicines can interact with levothyroxine. Always inform your doctor about the other medications you take, including supplements and herbal products.

How should I store Thyroxium 12.5mcg Tablet 120?

Keep at room temperature away from moisture, heat and direct light. Store in the original packaging and keep out of reach of children.

Last Updated On 30 Jul. 2026 | 11:37AM (IST)

Certified Content

Written by

Ashmita Borgohain

Medical Content Writer | 14 years

MSc (Applied Genetics)

Reviewed by

Dr. Chhavi Rosha

Medical Content Writer | 10 years

BAMS, FMC, MD Resident

Check out Editorial Policy

Manufacturer details

3RD FLOOR, 301-302, KUNTHU COMMERCE CENTRE, BANGUR NAGAR, GOREGAON WEST, Mumbai Suburban, Maharashtra, 400090

Country of origin: INDIA

Expiry on or after: January 2027

In case of any issues, contact us:

support@truemeds.in|09240250346

Address: 6th floor, Urmi Corporate Park Solaris, Saki Vihar Road, Andheri East, Mumbai 400071

References

Levothyroxine: MedlinePlus drug information. (n.d.). https://medlineplus.gov/druginfo/meds/a682461.html
Eghtedari, B., & Correa, R. (2023, August 28). Levothyroxine. StatPearls - NCBI Bookshelf. https://www.ncbi.nlm.nih.gov/books/NBK539808/
PubChem. (n.d.-v). Levothyroxine. PubChem. https://pubchem.ncbi.nlm.nih.gov/compound/Levothyroxine
NHS. (n.d.). Levothyroxine. NHS. Retrieved from https://www.nhs.uk/medicines/levothyroxine/
DailyMed - LEVOTHYROXINE SODIUM tablet. (n.d.). https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=e95720f2-91c9-a6d0-f7d5-8bcb94d07bbc
U.S. Food and Drug Administration. (1982). NDA 085755: Synthroid (levothyroxine sodium tablets, USP). https://www.accessdata.fda.gov/drugsatfda_docs/nda/pre96/085755.pdf

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We, at Truemeds make a diligent attempt to deliver accurate, expert- drafted and thoroughly reviewed medicine related information to our consumers. However, it should, by no means, be considered a substitute for prescription from a certified doctor or a trustworthy doctor-patient relationship. In fact we detest any form of self medication without expert advice. The sole purpose of the information on our portal is to educate our consumers, which helps improve the communication between a doctor and a patient. The information by no means is complete in its entirety and should not be used to diagnose or treat any medical condition. No amount of information can replace the experience and expertise of a doctor, therefore his/her advice always holds priority and should be followed appropriately.

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Unit-301 & 304, Lightbridge Tunga Village, Saki Vihar Rd, Chandivali, Powai, Mumbai, Maharashtra, India, 400072.

CIN: U62099MH2019PTC320566

Telephone:09240250346

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