Bottle of 50 Units
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CompositionLethyrox 12.5mcg Tablet 50 is used to treat hypothyroidism by replacing deficient thyroid hormones in the body. It helps improve metabolism, energy levels, mood, and overall hormonal balance.
Take this tablet exactly as prescribed, usually on an empty stomach. Regular monitoring is essential to maintain correct hormone levels. Inform your doctor about heart conditions or other medications before use.
Lethyrox 12.5mcg Tablet 50 is used to treat hypothyroidism (underactive thyroid) by replacing the thyroid hormone that the body lacks. It helps restore normal metabolism, reduce fatigue, support weight management, and improve mood. This tablet is also used to manage goitre, relieve symptoms of thyroid hormone deficiency, and support proper growth and development when taken regularly as advised by a doctor.
Follow these instructions while taking Lethyrox 12.5mcg Tablet 50:
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.
Lethyrox 12.5mcg Tablet 50 is taken orally.
Lethyrox 12.5mcg Tablet 50 may cause side effects including headache, weight loss, increased appetite, diarrhoea, excessive sweating, and rapid or irregular heartbeat. Nervousness or heat intolerance may also be experienced in some individuals. If any of these symptoms persist or worsen, consult your healthcare provider.
Most side effects are temporary and generally harmless, which resolve on discontinuing the use of Lethyrox 12.5mcg Tablet 50. 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.
Lethyrox 12.5mcg Tablet 50 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.
Caution is advised while taking Lethyrox 12.5mcg Tablet 50 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.
Exercise caution while taking Lethyrox 12.5mcg Tablet 50 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.
Caution is advised when consuming alcohol while taking Lethyrox 12.5mcg Tablet 50. Alcohol might interfere with how your body processes the medicine. Try to limit or avoid alcohol consumption during your treatment.
Exercise caution while taking Lethyrox 12.5mcg Tablet 50 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.
Caution is advised before using Lethyrox 12.5mcg Tablet 50 if you have a history of any kidney problems. It is best to consult your doctor before taking this medicine.
You can generally drive and operate machinery while taking Lethyrox 12.5mcg Tablet 50. However, if you experience dizziness or rapid heartbeat as side effects, avoid these activities until you feel better.
Tell your doctor about any allergies you have before starting Lethyrox 12.5mcg Tablet 50. If you notice symptoms like rash, itching, or swelling after taking this medicine, seek medical help immediately, as these could indicate an allergic reaction.
Caution is advised while giving Lethyrox 12.5mcg Tablet 50 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 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.
Lethyrox 12.5mcg Tablet 50 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 Lethyrox 12.5mcg Tablet 50, potentially requiring dosage adjustments.
Blood thinners: Warfarin and heparin may have enhanced effects when taken with Lethyrox 12.5mcg Tablet 50, potentially increasing the risk of bleeding.
Diabetes medicines: Metformin and insulin requirements may change when taking Lethyrox 12.5mcg Tablet 50, as thyroid hormones affect blood glucose levels.
Lethyrox 12.5mcg Tablet 50 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 Lethyrox 12.5mcg Tablet 50.
Walnuts: These nuts may decrease the absorption of the medicine.
Lethyrox 12.5mcg Tablet 50 can interact with the following diseases:
Untreated adrenal insufficiency: Taking Lethyrox 12.5mcg Tablet 50 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: Lethyrox 12.5mcg Tablet 50 can affect blood sugar control, potentially requiring adjustments to diabetes medicine dosages.
The daily dose of Lethyrox 12.5mcg Tablet 50 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.
Taking too much Lethyrox 12.5mcg Tablet 50 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.
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 Lethyrox 12.5mcg Tablet 50 dose, as these minerals can interfere with proper absorption of levothyroxine.
| Available Dosage Types | Tablet |
| Habit Forming | No |
| Ailment | Hypothyroidism, goitre, hormone imbalance |
| Drug Category | Thyroid hormone replacement |
| Therapeutic Category | Hypothyroidism treatment |
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.
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.
No. Hypothyroidism (underactive thyroid) typically requires lifelong management. Stopping could cause your symptoms to return, sometimes severely.
Avoid calcium, iron supplements, and soy products within 4 hours of taking Lethyrox 12.5mcg Tablet 50.
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.
Yes, several medicines can interact with levothyroxine. Always inform your doctor about the other medications you take, including supplements and herbal products.
Keep at room temperature away from moisture, heat and direct light. Store in the original packaging and keep out of reach of children.
Check out Editorial Policy
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
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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