Levothyroxine 75 mcg: uses, price & cheaper substitutes
Prescription required (Schedule H)
Common uses: Underactive thyroid (hypothyroidism) – replaces the hormone your thyroid is not making enough of; A common maintenance dose once your TSH has been adjusted from a lower starting dose.
Listed MRPs range from ₹0.56 to ₹1.54 per tablet across 8 listings. Use only on a doctor's prescription.
Price comparison
| Brand | Manufacturer | Pack | MRP | ₹ / tablet | As on |
|---|---|---|---|---|---|
| Thyroxine Sodium Tablets IP 75mcgJan Aushadhi | Jan Aushadhi (PMBJP) | 100 | ₹56.25 | ₹0.56 | 19 October 2026 |
| Thyroxinol 75 | Knoll Pharmaceuticals Ltd | 120 | ₹180.00 | ₹1.50 | 19 October 2026 |
| Lethyrox 75 | Intas Pharmaceuticals Ltd | 120 | ₹183.99 | ₹1.53 | 19 October 2026 |
| Thyroneed 75 | Mankind Pharma Ltd | 120 | ₹183.30 | ₹1.53 | 19 October 2026 |
| Thyronorm 75 | Abbott | 120 | ₹185.16 | ₹1.54 | 19 October 2026 |
| Eltroxin 75 | Glaxo SmithKline Pharmaceuticals Ltd | 120 | ₹184.51 | ₹1.54 | 19 October 2026 |
| Thyrox 75 | Macleods Pharmaceuticals Pvt Ltd | 120 | ₹185.16 | ₹1.54 | 19 October 2026 |
| Thyroup 75 | Lupin Ltd | 120 | ₹184.50 | ₹1.54 | 19 October 2026 |
MRPs as printed/listed on the date shown; actual price may vary.
Uses
- Underactive thyroid (hypothyroidism) – replaces the hormone your thyroid is not making enough of.
- A common maintenance dose once your TSH has been adjusted from a lower starting dose.
- Hypothyroidism in pregnancy, where the dose is often stepped up to this level or higher.
- After thyroid surgery or radioactive iodine treatment, and to suppress TSH in some thyroid cancers.
How to take it
Take one tablet once a day on an empty stomach, first thing in the morning, 30 to 60 minutes before breakfast, tea or coffee, with a glass of water. Keep a gap of about four hours from iron, calcium, antacids and multivitamins because they stop it being absorbed. Take it at the same time every day and do not switch brands without telling your doctor, as absorption can differ slightly. Your doctor will check your TSH after about six to eight weeks of any dose change and then once or twice a year. Levothyroxine is usually taken for life; never stop it on your own, and do not take extra to lose weight.
Side effects
Common
- Side effects are usually a sign the dose is too high: palpitations, sweating, feeling hot.
- Headache.
- Restlessness, anxiety or trouble sleeping.
- Hair loss in the first months, which usually settles.
Serious
Stop and get medical help urgently if you notice any of these.
- Chest pain, very fast or irregular heartbeat – especially if you have heart disease; see a doctor.
- Signs of a thyroid crisis from too much hormone – high fever, confusion, severe racing heart.
- Severe allergic reaction – swelling of the face or throat, difficulty breathing.
- Long-term over-replacement can thin the bones; regular TSH checks prevent this.
Safety information
Alcohol
Alcohol does not interact directly, but avoid taking the tablet with anything other than water.
Pregnancy
Safe and important in pregnancy – the dose often needs to be increased, so tell your doctor as soon as you know you are pregnant and get TSH checked each trimester. Safe while breastfeeding.
Kidney problems
No dose change for kidney disease.
Liver problems
No dose change usually needed, but tell your doctor about liver disease.
Children
Used in children with the dose set by weight under a paediatrician.
Missed dose
Take it as soon as you remember unless the next dose is nearly due – then skip it. Do not take two doses together.
Interactions
- Iron, calcium, antacids, sucralfate and multivitamins – block absorption; keep a gap of about four hours.
- Omeprazole, pantoprazole and other acid reducers can reduce absorption over time.
- Carbamazepine, phenytoin and rifampicin speed up levothyroxine breakdown; the dose may need raising.
- Warfarin – the effect may increase; INR may need checking. Digoxin and beta blockers may need adjusting.
- Soya products, coffee and high-fibre meals close to the dose reduce absorption; biotin supplements can distort thyroid test results.
Frequently asked questions
What is Thyronorm 75 used for?
Thyronorm 75 contains levothyroxine 75 mcg, a synthetic thyroid hormone. It treats an underactive thyroid and is a common maintenance dose once your TSH has been adjusted.
Thyronorm 50 vs Thyronorm 75 – why was my dose changed?
Doctors adjust the dose based on your TSH blood test, usually six to eight weeks after a change. Moving to 75 mcg means your TSH was still high on the lower dose. Never change strength on your own.
Why must Thyronorm be taken on an empty stomach?
Food, tea, coffee and milk reduce how much levothyroxine your body absorbs. Taking it first thing in the morning with water, 30 to 60 minutes before breakfast, keeps your dose consistent.
Can I take Thyronorm 75 with calcium or iron tablets?
Not at the same time. Iron, calcium and antacids block absorption – keep a gap of about four hours between them and your thyroid tablet.
Is Thyronorm 75 safe in pregnancy?
Yes, and it is essential – untreated hypothyroidism affects the baby's brain development. The dose usually needs increasing in pregnancy, so get TSH checked as soon as you know you are pregnant.
Thyronorm vs Thyrox vs Eltroxin – which is best?
All contain levothyroxine and work the same way. Small absorption differences can exist between brands, so stick to one brand and have TSH rechecked if you are switched.
What if I take Thyronorm after breakfast by mistake?
One dose taken with food is absorbed a little less but will not cause harm. Go back to taking it on an empty stomach the next day; do not take an extra tablet.
Can Thyronorm 75 cause palpitations or weight loss?
These suggest the dose is now too high for you, which can happen after weight loss or in older age. Tell your doctor and get TSH checked rather than stopping the tablet.
Is Thyronorm a prescription medicine?
Yes. Levothyroxine is a Schedule H medicine and needs a prescription, plus TSH blood tests to set the right dose.
Sources
- NHS – Levothyroxine (19 October 2026)
- NPPA Pharma Sahi Daam (ceiling prices) (19 October 2026)
- PMBI Jan Aushadhi Product & MRP List (19 October 2026)
Medyzen Editorial Team · Last updated
This page is general information, not medical advice. Do not start, stop or change a medicine without asking a doctor or pharmacist. Terms