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Prescription requiredMerck LtdHormone replacement / Thyroid therapy

Euthyrox 50 Tablet

Levothyroxine (50mcg)

₹100MRP ₹110In stock

Delivery across India. Free above ₹999; ₹49 from ₹499, ₹99 below. Chennai express delivery is chargeable.

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Euthyrox 50 Tablet is used for treatment of hypothyroidism (underactive thyroid); thyroid hormone replacement after thyroidectomy or radioiodine therapy; TSH suppression therapy in certain cases of thyroid cancer or goitre as advised by a doctor.

Medically reviewed by Dr. Balaji Krishnan, MBBS · Updated September 2026

Licensed pharmacyPharmacist-verified orderDelivered across India

Key details

Salt: Levothyroxine (50mcg)
Available variants: tablet 100 Tablet
Best price: ₹100 (₹1.00 per tablet)
MRP: ₹110
Prescription: Required
Manufacturer: MERCK PHARMA

Ordering notes

Standard delivery across India. No same-day delivery nationally.
Chennai express delivery is possible and chargeable. Learn more
Returns & refunds: orders can be cancelled before dispatch; after dispatch, returns depend on the item category. Read the full policy

Composition of Euthyrox 50 Tablet

Euthyrox 50 Tablet contains Levothyroxine (50mcg). It belongs to the Thyroid hormone (synthetic T4) class of medicines.

Uses of Euthyrox 50 Tablet

Treatment of hypothyroidism (underactive thyroid); thyroid hormone replacement after thyroidectomy or radioiodine therapy; TSH suppression therapy in certain cases of thyroid cancer or goitre as advised by a doctor.

Key benefits

  • Restores normal thyroid hormone levels
  • Relieves symptoms of hypothyroidism (fatigue
  • weight gain
  • cold intolerance)
  • Helps normalize TSH
  • Supports metabolism and energy levels
  • Used for thyroid hormone replacement/suppression when prescribed

How Euthyrox 50 Tablet works

Levothyroxine is a synthetic form of thyroxine (T4), a natural thyroid hormone. It is converted to the active hormone (T3) in the body and restores normal thyroid hormone levels, helping regulate metabolism, energy and body temperature.

How to take Euthyrox 50 Tablet

Tablet to be taken exactly as prescribed. Usually taken once daily on an empty stomach, preferably in the morning 30–60 minutes before breakfast with water. Take at the same time each day; avoid taking along with calcium/iron/antacids—keep a gap of at least 4 hours.

Take it exactly as your doctor prescribed. Do not change the dose or stop early on your own.

Missed dose and overdose

If you miss a dose

Take it as soon as you remember. If your next dose is almost due, skip the one you missed — never take two doses together to catch up.

If you take too much

An overdose of this medicine can cause a racing heart, chest pain, tremor, fever and dangerous heart rhythm disturbance. Do not wait for symptoms to appear — go to the nearest emergency department and take the pack or strip with you.

Side effects of Euthyrox 50 Tablet

Most side effects of Euthyrox are mild and settle as the body adjusts. Reported side effects include:

  • Palpitations
  • fast heartbeat
  • tremor
  • nervousness
  • headache
  • insomnia
  • sweating
  • heat intolerance
  • weight loss
  • diarrhoea
  • menstrual irregularities

Stop the medicine and seek help immediately for a rash, swelling of the face or lips, wheezing or difficulty breathing. Tell your doctor about any side effect that persists or worries you.

Safety advice for Euthyrox 50 Tablet

PregnancyGenerally safe (often required in pregnancy); dose adjustment and close monitoring needed—consult doctor.
BreastfeedingEuthyrox 50 Tablet is safe to use during lactation. Human studies have shown that either the drug does not pass into the breastmilk in significant amount or is not expected to cause toxicity to the baby.
AlcoholUse with caution (no direct interaction known, but alcohol can affect thyroid health and adherence).
DrivingNot expected to affect your ability to drive.
KidneyThere is limited information available on the use of Euthyrox 50 Tablet in patients with kidney disease. Please consult your doctor.
LiverThere is limited information available on the use of Euthyrox 50 Tablet in patients with liver disease. Please consult your doctor.
Habit formingNo

Warnings and precautions

Prescription-only (Schedule H). Do not use for weight loss. Dose needs individual titration and periodic TSH/T4 monitoring. Use caution in elderly patients and those with coronary artery disease, heart failure, arrhythmias or hypertension—overtreatment may cause angina, atrial fibrillation and osteoporosis. In adrenal insufficiency, treat adrenal condition before starting levothyroxine. If symptoms of hyperthyroidism occur (palpitations, chest pain, anxiety, unexplained weight loss), contact doctor; do not stop abruptly without advice.

Do not take Euthyrox if

Not for anyone with a known allergy to this medicine or to any ingredient in the pack. Not for people with an untreated overactive thyroid or untreated adrenal insufficiency.

Interactions with other medicines

Calcium salts,iron salts,aluminium/magnesium antacids,sucralfate,cholestyramine/colestipol,sevelamer,orlistat (reduced absorption); rifampicin,carbamazepine,phenytoin,phenobarbital (increased metabolism); sertraline (may increase requirement); amiodarone (affects thyroid function); warfarin (increased anticoagulant effect); insulin/antidiabetics (dose adjustment may be needed); digoxin (effect may reduce); estrogen therapy (may increase dose requirement).

How to store Euthyrox 50 Tablet

Store below 25°C, protected from light and moisture. Keep in original pack; keep out of reach of children.

Expert advice for Euthyrox 50 Tablet

<div class="style__desktop-container___1hcBT"><div class="style__desktop-video___2GTR9"><div class="styles__video-img___1rCzR"><div class=""/><div class=""/></div></div><div><div><div><div><div class="ExpertAdviceItem__content___1Djk2"><ul><li><div>Your doctor has prescribed Euthyrox 50 Tablet to replace the natural thyroid hormone that your own thyroid gland can no longer make.</div></li> <li><div>It is best to take it on an empty stomach (ideally, first thing in the morning). No food, milk, or tea should be taken 1 hour before and 2 hours after taking this medicine.</div></li> <li><div>It may take 6 to 8 weeks to get the full effect.</div></li> <li><div>For most people, Euthyrox 50 Tablet is a lifelong medication. Do not discontinue it without first discussing with your doctor.</div></li> <li><div>Inform your doctor if you have diarrhoea, nervousness, irritability, feeling of a heartbeat, sleep disturbances, shaking hands, or chest pain. Your doctor may adjust your dose.</div></li> <li><div>Leave a gap of at least 4 hours before taking any antacids, calcium or iron supplements, and multivitamins, as these may interfere with the effect of the medicine.</div></li> <li><div>Get your hormone levels checked regularly and inform your doctor if you notice a significant change in your body weight. The dose may need to be adjusted.</div></li> <li><div>Inform your doctor before changing the brand of Euthyrox 50 Tablet as all brands may not have the same effect.</div></li></ul></div></div></div></div></div></div>

Manufacturer and class

Manufacturer:
MERCK PHARMA
Therapeutic class:
Hormone replacement / Thyroid therapy
Drug class:
Thyroid hormone (synthetic T4)

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Euthyrox 50 Tablet FAQs

What is Euthyrox 50 Tablet used for?
Euthyrox 50 Tablet is commonly used for Treatment of hypothyroidism (underactive thyroid); thyroid hormone replacement after thyroidectomy or radioiodine therapy; TSH suppression therapy in certain cases of thyroid cancer or goitre as advised by a doctor. Always follow your doctor's advice, this information is for educational purposes and not a substitute for professional medical guidance.
What is the salt in Euthyrox 50 Tablet?
Euthyrox 50 Tablet contains Levothyroxine (50mcg). If you are allergic to any of these active ingredients or excipients, do not take this medicine and speak to your doctor first.
How should I take Euthyrox 50 Tablet?
Tablet to be taken exactly as prescribed. Take it exactly as prescribed; do not change the dose or stop early without talking to your doctor.
How does Euthyrox 50 Tablet work?
Levothyroxine is a synthetic form of thyroxine (T4), a natural thyroid hormone.
Is Euthyrox 50 Tablet a prescription medicine?
Yes. Euthyrox 50 Tablet is a prescription-only (Rx) medicine. Upload a valid prescription from a registered medical practitioner during checkout. We cannot dispense it without a valid Rx.
What are the common side effects of Euthyrox 50 Tablet?
The side effects reported most often with Euthyrox are Palpitations, fast heartbeat, tremor, nervousness, headache. Most are mild and settle as the body adjusts; tell your doctor if any of them persist or worry you, and stop the medicine and seek help at once for a rash, swelling of the face or lips, or difficulty breathing.
Can Euthyrox 50 Tablet be taken during pregnancy?
Generally safe (often required in pregnancy); dose adjustment and close monitoring needed—consult doctor. Always tell your doctor if you are pregnant, planning a pregnancy or breastfeeding before starting Euthyrox.
Can I drink alcohol while taking Euthyrox 50 Tablet?
Use with caution (no direct interaction known, but alcohol can affect thyroid health and adherence).
What if I miss a dose of Euthyrox 50 Tablet?
Take it as soon as you remember.
Is Euthyrox 50 Tablet habit forming?
No. Euthyrox 50 Tablet is not known to be habit forming when taken as prescribed.
How much does Euthyrox 50 Tablet cost on PingMeDoc Pharmacy?
Euthyrox 50 Tablet starts at ₹100 (MRP ₹110) on PingMeDoc Pharmacy. Available in tablet 100 Tablet. Final price is confirmed at checkout and may vary by variant and location.
Who manufactures Euthyrox 50 Tablet?
Euthyrox 50 Tablet is manufactured by MERCK PHARMA. PingMeDoc Pharmacy sources medicines only from licensed manufacturers and distributors.
How is Euthyrox 50 Tablet delivered?
Euthyrox 50 Tablet is delivered across India via our licensed pharmacy partners. Standard delivery timelines are confirmed at checkout. Chennai customers can opt for chargeable same-city express delivery.

Euthyrox 50 Tablet, Quick facts

Salt
Levothyroxine (50mcg)
Form
tablet
Best price
₹100 (₹1.00 per tablet)
MRP
₹110
Prescription
Required (Rx)
Schedule
Schedule H
Brand
Merck Ltd
Manufacturer
MERCK PHARMA
Therapeutic class
Hormone replacement / Thyroid therapy
Drug class
Thyroid hormone (synthetic T4)
Habit forming
No
Variants
tablet 100 Tablet
Delivery
Standard across India

References

The information on Euthyrox 50 Tablet is compiled from the manufacturer's prescribing information and the sources below, and is reviewed by a registered medical practitioner. It does not replace advice from your own doctor.

  1. Manufacturer labeling/SmPC, established medical literature (endocrinology guidelines), standard drug references
  2. CDSCO drug information
  3. Central Drugs Standard Control Organisation (CDSCO), Ministry of Health & Family Welfare, Government of India, approved drug and schedule listings.
  4. National List of Essential Medicines (NLEM) 2022, Government of India.
  5. Manufacturer's package insert / prescribing information for Euthyrox 50 Tablet.
  6. World Health Organization, ATC/DDD classification and Model Formulary for the active ingredient.

Next steps

Safety disclaimer

Product information is for general awareness and does not replace professional medical advice. Always follow a clinician's guidance and upload a valid prescription when required.