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compositionComposition:THYROXINE-37.5MCG
prescription
Prescription Medicine
info
Thyronorm 37.5 mcg Tablet 100's
Thyronorm 37.5 mcg Tablet 100's
Thyronorm 37.5 mcg Tablet 100's
Thyronorm 37.5 mcg Tablet 100's

Thyronorm 37.5 mcg Tablet is used for the treatment of hypothyroidism (low secretion of thyroid hormone). It contains Thyroxine, which works by replacing the thyroid hormone in the body when the natural production of thyroid hormones is not sufficient to meet the needs of the body. Side effects include headache, nervousness, sleeplessness, irritability, diarrhoea, muscle spasm, weight loss, feeling hot even in cool environments, menstrual irregularities (in women), and skin rash. Before taking this medicine, you should tell your doctor if you are allergic to any of its components or if you are pregnant/breastfeeding, and about all the medications you are taking and pre-existing medical conditions.

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Written By Bayyarapu Mahesh Kumar , M Pharmacy
Reviewed By Dr Aneela Siddabathuni , MPharma., PhD
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More about the Product

Composition :

THYROXINE-37.5MCG

Manufacturer/Marketer :

Abbott India Ltd

Consume Type :

Oral

Expires on or after :

Jan-27

Return Policy :

Not Returnable

About Thyronorm 37.5 mcg Tablet

Thyronorm 37.5 mcg Tablet is a prescription medication used to treat an underactive thyroid, a condition medically known as hypothyroidism. It works as a replacement hormone when your thyroid gland cannot produce enough thyroid hormone on its own to regulate your body's energy levels. By restoring your hormone levels, this medication helps keep your body functions running at a normal, healthy pace.

For this medicine to work effectively, you must take it consistently every day at the same time. It is best to take your tablet on an empty stomach, typically first thing in the morning with a full glass of water, at least 30 to 60 minutes before breakfast. Making small changes to your daily routine, such as eating a balanced diet and managing your daily stress, can also help support your overall well-being during treatment.

Most patients tolerate this medicine well, though some may notice temporary hair loss during the first few weeks of starting treatment. While serious side effects are rare, you should contact your doctor immediately if you experience rapid heartbeats, chest pain, or severe muscle weakness. Regular monitoring by your healthcare provider is necessary to ensure you are receiving the correct dose.

Do not take this if you have an untreated overactive thyroid or an untreated issue with your adrenal glands. Before starting Thyronorm 37.5 mcg Tablet , tell your doctor if you have a history of heart disease, high blood pressure, diabetes, or blood-clotting disorders, as your treatment plan may need special adjustments.

Thyronorm 37.5 mcg Tablet can interact with several substances, including calcium supplements, iron pills, and antacids, which can stop your body from absorbing the medicine properly. Talk to your doctor if you are pregnant, planning to become pregnant, or breastfeeding, as your dose may need to be adjusted to support your health and your baby's development.

Uses of Thyronorm 37.5 mcg Tablet

Thyronorm 37.5 mcg Tablet contains thyroxine and is used to replace or supplement thyroid hormone in people whose bodies do not produce enough on their own. The detailed uses of Thyronorm 37.5 mcg Tablet are as follows: 

  • Underactive thyroid (Hypothyroidism): Thyronorm 37.5 mcg Tablet replaces the thyroid hormone your body is lacking, helping to normalise your metabolic rate and relieve symptoms like extreme fatigue and cold sensitivity.
  • Goitre management: It is used to help shrink or prevent the growth of an enlarged thyroid gland by reducing the release of thyroid-stimulating hormones from the pituitary gland.
  • Thyroid cancer support: In certain cases, it is prescribed alongside surgery and other therapies to help manage specific types of thyroid cancers by suppressing tumour-stimulating hormones.

Key Benefits

Thyronorm 37.5 mcg Tablet contains thyroxine, which helps replace the thyroid hormone your body is lacking, restoring normal metabolic function and improving the symptoms associated with hypothyroidism. As hormone levels return to a healthier range, many people experience gradual improvements in their overall physical and mental well-being. 

  • Improved Energy and Physical Function: By correcting low thyroid hormone levels, Thyronorm 37.5 mcg Tablet helps reduce fatigue, increase energy levels, and support a return to normal daily activities with improved stamina.
  • Relief from Cognitive and Physical Symptoms of Hypothyroidism: Regular treatment helps improve mental sluggishness or 'brain fog' and may gradually reverse other symptoms of hypothyroidism, such as weight gain, dry skin, brittle hair, and increased sensitivity to cold temperatures.

Directions for Use

To get the maximum benefit from thyroxine treatment with Thyronorm 37.5 mcg Tablet , follow these step-by-step instructions carefully: 

  • Take your tablet once daily in the morning on an empty stomach, at least 30 to 60 minutes before eating breakfast or drinking coffee.
  • Swallow the tablet whole with a full glass of water. Do not crush, chew, or split the tablet unless your doctor specifically instructs you to do so.
  • Avoid taking antacids, calcium carbonate, or iron supplements within 4 hours of taking your dose, as they can prevent absorption.

Always follow your doctor's exact instructions regarding your dosage. Do not change your dose or stop taking this medication without consulting your healthcare provider first.

How Thyronorm 37.5 mcg Tablet Works

Thyronorm 37.5 mcg Tablet contains thyroxine, a synthetic form of the primary hormone normally produced by the thyroid gland. It works as a direct replacement for the natural hormone that your thyroid gland produces. When your thyroid is underactive, your body lacks the vital signals needed to generate energy and keep your organs functioning at their optimal speed. Once you swallow the tablet, your body absorbs the active ingredient and converts it into its active form. This hormone then travels through your bloodstream to your cells, instructing them to consume oxygen, generate heat, and metabolise nutrients properly, effectively waking up your entire system.
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Alcohol

Caution

You are recommended not to consume alcohol along with Thyronorm 37.5 mcg Tablet to avoid unpleasant side effects.

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Pregnancy

Consult your doctor

Only consume Thyronorm 37.5 mcg Tablet , if you are prescribed by a doctor. However, the need for Thyroxine may increase during pregnancy due to increased blood levels of oestrogen (female sex hormone) hence, monitoring of thyroid function should be done regularly both during and after pregnancy. In this case, the thyroid hormone dose can be adjusted by your doctor.

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Breast Feeding

Caution

Even during high-dose thyroxine therapy, the amount of Thyronorm 37.5 mcg Tablet passing into the breast milk during lactation is very low and therefore harmless. However, if you have any doubt consult a doctor.

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Driving

Safe if prescribed

Thyronorm 37.5 mcg Tablet does not interfere with your ability to drive.

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Liver

Safe if prescribed

Thyronorm 37.5 mcg Tablet does not have any reported interaction hence, in case you experience any difficulty discuss with your doctor.

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Kidney

Safe if prescribed

Thyronorm 37.5 mcg Tablet can be taken in the prescribed dose as it does not affects the kidney. However patient with adrenal gland complication or problem should consult a doctor before its intake.

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Children

Safe if prescribed

Thyronorm 37.5 mcg Tablet can be given to the children (new-borns and infants) with inborn thyroid hormone deficiency. To achieve normal mental and physical development, the initial recommended dosage is 10-15 mcg per kg/day for the first 3 months. After that doctor would adjust the dose individually according to the thyroid hormone level and TSH values measured in blood.

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Heart

Caution

Please consult your physician if you have any pre-existing cardiac problems

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Geriatrics

Consult your doctor

Please consult your physician if you have any concerns regarding the use in elderly patients.

What if I have taken an overdose of Thyronorm 37.5 mcg Tablet

Do not take more than the prescribed dose of Thyronorm 37.5 mcg Tablet as it may cause serious side effects. If you suspect you have taken overdose, please consult a doctor immediately.

Diet & Lifestyle Advise

  • Keep your fibre intake consistent: High-fibre diets can reduce the amount of Thyronorm 37.5 mcg Tablet your body absorbs. Keep your fibre intake relatively stable from day to day, and talk to your doctor if you make major dietary changes.
  • Space out supplements: Always wait at least 4 hours after taking your medicine before consuming calcium-rich foods, calcium supplements, iron pills, or multivitamins.
  • Limit soy and walnuts: Large amounts of soy flour, cottonseed meal, or walnuts can decrease the absorption of this medicine. Enjoy these foods in moderation and keep your consumption consistent.
  • Schedule regular blood checks: Attend all your laboratory appointments so your doctor can measure your hormone levels and adjust your dose as your body's needs change.

Have a query?

How Soon It Starts Working

The time required for Thyronorm 37.5 mcg Tablet to start to work: The time required for Thyronorm 37.5 mcg Tablet to start to work is 2 hours after administration. 

The time for which the effects of Thyronorm 37.5 mcg Tablet last: The duration of action for Thyronorm 37.5 mcg Tablet is unknown.

What if you forget to take Thyronorm 37.5 mcg Tablet

If you forget to take a dose of Thyronorm 37.5 mcg Tablet , take it as soon as you remember. If it is almost time for your next scheduled dose, skip the missed dose and continue with your regular dose. Do not take a double dose to make up for the missed one.

Storage

•Store Thyronorm 37.5 mcg Tablet tablets at a controlled room temperature between 20°C and 25°C (68°F to 77°F). • Keep the tablets in their original container, tightly closed, to protect the medication from direct light and moisture. Do not store this medicine in

Drug Warnings

  • Stick to the same brand: Different brands of Thyronorm 37.5 mcg Tablet can behave differently in your body. Try to get the exact same brand with every refill, and consult your pharmacist if the packaging looks different.
  • Do not use for weight control: This medicine is not a weight-loss tool. It should never be used to treat obesity in individuals with normal thyroid function, as doing so can cause dangerous heart complications.
  • Monitor blood sugar closely: If you have diabetes, this medication can alter your blood sugar levels. Check your levels regularly and discuss any changes with your doctor.
  • Inform surgical teams: Tell your surgeon, anesthesiologist, or dentist that you take Thyronorm 37.5 mcg Tablet well in advance of any scheduled surgical or dental procedures.
     

Drug-Drug Interactions

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Drug-Drug Interactions

The following medicines may interact with Thyronorm 37.5 mcg Tablet and affect its absorption, effectiveness, or safety: 

  • Antacids, iron, and calcium: These medications significantly lower the absorption of Thyronorm 37.5 mcg Tablet if taken at the same time. Space them out by at least 4 hours.
  • Blood thinners: Thyronorm 37.5 mcg Tablet can increase the effects of blood-thinning medications, which may raise your risk of bruising or bleeding.
  • Diabetes medications: This medicine can reduce the effectiveness of insulin and oral diabetes drugs, meaning your doctor may need to adjust your blood sugar treatments.

Drug-Food Interactions

Certain foods and beverages may affect the absorption of Thyronorm 37.5 mcg Tablet and reduce how well it works if consumed too close to your dose: 

  • Soy and high-fibre foods: Consuming these close to your dose can block your body from fully absorbing the hormone replacement.
  • Coffee and espresso: Drinking coffee at the same time as your tablet can greatly decrease how much medicine your body receives.

Drug-Disease Interactions

Inform your doctor if you have any of the following conditions before taking Thyronorm 37.5 mcg Tablet , as additional monitoring or dose adjustments may be required: 

  • Heart disease: In patients with coronary artery disease or heart failure, this medicine can increase the heart's workload, requiring a lower starting dose and a very gradually increasing dose.
  • Adrenal insufficiency: Taking this medicine before treating an underactive adrenal gland can trigger a dangerous adrenal crisis.
No Drug - Drug interactions found in our data. We may lack specific data on this medicine and are actively working to update our database. Consult your doctor for personalized advice

Drug-Drug Interactions

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Drug-Food Interactions

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THYROXINE-37.5MCGCalcium rich foods
Moderate

Drug-Food Interactions

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THYROXINE-37.5MCGCalcium rich foods
Moderate
Common Foods to Avoid:
Tofu Set With Calcium, Ragi, Seasame Seeds, Kale, Milk, Almonds, Bok Choy, Calcium-Fortified Soy Milk, Cheese, Yogurt

How to manage the interaction:
Consumption of calcium supplements/calcium-rich foods, along with Thyronorm 37.5 mcg Tablet may create an insoluble compound that affects the absorption of Thyronorm 37.5 mcg Tablet. Avoid consumption of calcium supplements/calcium-rich foods during treatment with Thyronorm 37.5 mcg Tablet.

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FAQs

Thyronorm 37.5 mcg Tablet is used for the treatment of hypothyroidism or low secretion of thyroid hormone.
Your thyroid hormone may vary depending on your age, sex, and condition (like pregnancy, chronic condition or complication). For example, a 30-year-old woman may have normal TSH around 4.2 mU/L, while a 90-year-old man may reach 8.9 mU/L at their upper limits. Besides this, your level of stress, diet, and medications, and menses period can fluctuate your level of thyroid hormone. An average general range for reference is as below: -Normal TSH range should be 0.4 - 4.0 mIU/L -Normal T3 range should be 0.2 - 0.5 ng/dl -Normal T4 range should be 0.8 - 1.8 ng/dl
You need to have a thyroid profile test which includes parameters like T3, T4 and TSH every month. You will observe a decrease in your TSH level after regular intake of Thyronorm 37.5 mcg Tablet as prescribed by your doctor.
If you observe symptoms like sudden weight gain, fatigue, increased sensitivity to cold, dry skin, constipation, puffy face, muscle weakness, anxiety, or voice hoarseness. You should consult an Endocrinologist/Physician for further treatment.
Yes. Limit salt intake to less than 2300 mg daily. Too much salt intake can increase your blood pressure especially when you have an underactive thyroid.
Yes. Based on the thyroid profile test, an Endocrinologist may advise a pregnant woman to take a high dose of Thyronorm 37.5 mcg Tablet to meet the high-level thyroid hormone requirement. Treatment of underactive thyroid is vital during pregnancy, as low levels of thyroid hormone in the mother may harm both mother and baby.
Do not take double doses in case you missed the dose of Thyronorm 37.5 mcg Tablet . If accidentally you have taken too much of Thyronorm 37.5 mcg Tablet , it may cause side effects like nervousness, insomnia, mild elevation of temperature, blood pressure elevation or loose stools. In this case, immediately contact the doctor and take only when your doctor has allowed you to take it.
Take Thyronorm 37.5 mcg Tablet as directed by your doctor. They will tailor the dosage to your individual needs. Typically, take it once daily in the morning on an empty stomach. Follow your doctor's instructions carefully. Your doctor may adjust the dosage based on your thyroid levels and medical history. This will help manage your hypothyroidism or related conditions.
As a diabetic taking Thyronorm 37.5 mcg Tablet , it's essential to be aware of the potential interactions between thyroid hormones and blood sugar control. Monitor your glucose levels closely, as thyroid hormones can impact glucose levels, and be prepared to adjust your diabetes medication or insulin doses accordingly. To ensure optimal management, regularly review your diabetes treatment plan with your healthcare provider and seek personalized guidance on managing your diabetes while taking Thyronorm 37.5 mcg Tablet
Thyroxine is a thyroid hormone that regulates various bodily functions. It manages metabolism, supports growth and development, and influences heart rate, nervous system function, and muscle strength. Thyroxine also regulates the menstrual cycle, maintains bone health, and supports healthy hair, skin, and nails. Additionally, it regulates body temperature and lipid metabolism. Thyroxine helps the body use energy efficiently, grow and develop properly, and maintain overall health and well-being.
Thyroxine is important because it regulates various bodily functions essential for overall health and well-being. It manages metabolism, supports growth and development, and maintains heart health, nervous system function, and muscle strength. Thyroxine also regulates the menstrual cycle, supports bone health, and maintains healthy hair, skin, and nails. The body's functions can be impaired without sufficient Thyroxine, leading to various health issues. Therefore, Thyroxine is vital in keeping our bodies running smoothly and maintaining our overall health.
Thyronorm 37.5 mcg Tablet does not affect any types of contraception, including the combined pill, progestogen-only pill or emergency contraception. However, the combined pill contains oestrogen, which can reduce the amount of Thyroxine in your body. Discuss with your doctor if you have more concerns and personalized guidance.
Thyronorm 37.5 mcg Tablet should not cause weight gain. In fact, Thyronorm 37.5 mcg Tablet can help regulate metabolism and promote weight loss in people with hypothyroidism.
When taking Thyronorm 37.5 mcg Tablet , it's important to be mindful of your diet to ensure optimal absorption and minimize potential interactions. Certain foods can interfere with Thyroxine absorption or affect thyroid function, so it's best to limit or avoid soy products, raw or undercooked cruciferous vegetables, high-fibre foods, excessive caffeine, seaweed, and gluten if you have intolerance or sensitivity. Additionally, try to limit processed foods containing artificial additives and preservatives. However, cooking and processing can reduce the effects of these foods on Thyroxine absorption, and a balanced diet with moderate food choices is usually sufficient. To be safe, consult your healthcare provider or a registered dietitian for personalized dietary advice to ensure you're getting the most out of your medication.
If you stop taking Thyroxine tablets, your hypothyroidism symptoms may return or worsen. Thyroxine is a replacement hormone that your body relies on to regulate metabolism, growth, and development. Stopping Thyroxine tablets can also lead to increased risks of heart problems, high cholesterol, infertility, osteoporosis, and even a thyroid crisis - a rare but life-threatening condition. Don't stop taking Thyroxine tablets without consulting your healthcare provider, as they will guide you on gradually tapering off the medication if necessary, monitoring your thyroid hormone levels, adjusting your dosage or switching to a different medication to ensure your thyroid hormone levels remain stable.
Taking Thyronorm 37.5 mcg Tablet may lead to hair loss in some individuals, especially during the initial stages of treatment or if the dosage is not optimized. But don't worry; hair loss from Thyroxine is usually temporary and can be fixed by adjusting the dose or adding other treatments. If you notice hair loss while taking Thyroxine, talk to your doctor, who can help you find a solution. Remember, Thyroxine is an important medication for managing hypothyroidism. You can minimize hair loss and feel your best with the proper guidance.
Thyronorm 37.5 mcg Tablet is ideal for treating an underactive thyroid. It replaces the missing thyroid hormone, helping regulate metabolism and relieve symptoms like fatigue, weight gain, and hair loss. By taking Thyronorm 37.5 mcg Tablet as prescribed and monitoring progress with your doctor, you can effectively manage your thyroid condition and improve your overall health.
Thyronorm 37.5 mcg Tablet is generally considered safe when used correctly. However, as with any medication, there may be potential risks and side effects. Your doctor will help you understand these and ensure you use it safely.
Common side effects of Thyronorm 37.5 mcg Tablet may include irregular heartbeat (palpitations), muscle spasms, headache, nervousness, irritability, sleeplessness, tremors, muscle weakness, increased appetite, weight loss, diarrhoea, heat intolerance, menstrual irregularities and skin rash.
No, you should not take Thyronorm 37.5 mcg Tablet with coffee. Coffee can significantly reduce how much of the medication your body absorbs, making it less effective. Take your tablet with plain water and wait at least 30 to 60 minutes before having your morning coffee. Talk to your doctor or pharmacist if you struggle to manage your morning schedule.
You may begin to notice an improvement in your energy levels within a couple of weeks. However, it can take up to several weeks or even a few months for your body's hormone levels to stabilise fully and for your symptoms to completely resolve. Talk to your doctor if you do not feel better after several weeks of daily use.
Yes, it is both safe and highly important to take Thyronorm 37.5 mcg Tablet during pregnancy. Maintaining normal thyroid levels is essential for your health and the development of your baby. Your doctor will monitor your blood levels closely, as your dose will likely need to be increased during your pregnancy. Talk to your doctor as soon as you know you are pregnant.
Take the missed dose as soon as you remember it on that same day. If you do not remember until the following day, skip the missed dose and take your normal dose for that day. Never take two tablets at once to make up for a missed dose. Talk to your doctor or pharmacist if you find yourself missing doses frequently.
Thyronorm 37.5 mcg Tablet should not be used as a weight-loss medicine. However, if your weight gain is due to hypothyroidism, treatment with Thyronorm 37.5 mcg Tablet may help restore normal metabolism and gradually reverse thyroid-related weight gain. It should never be used to treat obesity in people with normal thyroid function.
For the majority of patients with hypothyroidism, Thyronorm 37.5 mcg Tablet is a lifelong replacement therapy. If you stop taking it, your thyroid levels will drop again, and your symptoms will return. Do not stop taking this medication unless your doctor explicitly tells you to do so. Talk to your doctor if you have concerns about long-term use.
Different brands of thyroxine-containing medicines may have minor variations in formulation, which can slightly alter how your body absorbs the hormone. Even a tiny change in absorption can impact your thyroid hormone levels. Talk to your pharmacist to ensure you receive the same brand with each refill.
No, calcium supplements can bind to the medicine in your stomach and prevent your body from absorbing it. You must separate your calcium supplements and Thyronorm 37.5 mcg Tablet by at least 4 hours to ensure you receive the full benefit of your thyroid therapy. Talk to your doctor or pharmacist to help arrange your daily supplement schedule.

Disclaimer

While we strive to provide complete, accurate, and expert-reviewed content on our 'Platform', we make no warranties or representations and disclaim all responsibility and liability for the completeness, accuracy, or reliability of the aforementioned content. The content on our platform is for informative purposes only, and may not cover all clinical/non-clinical aspects. Reliance on any information and subsequent action or inaction is solely at the user's risk, and we do not assume any responsibility for the same. The content on the Platform should not be considered or used as a substitute for professional and qualified medical advice. Please consult your doctor for any query pertaining to medicines, tests and/or diseases, as we support, and do not replace the doctor-patient relationship.

Reference

  1. Electronic Medicines Compendium (EMC). Product Patient Information Leaflet (PIL). Cheshire, UK: Datapharm; 2025. [Accessed on 02 Jun. 2026] Check here
  2. Electronic Medicines Compendium (EMC). Medicine Summary of Product Characteristics (SmPC). Cheshire, UK: Datapharm; 2025. [Accessed on 02 Jun. 2026] Check here
  3. Mayo Clinic Staff. Drc 20350289 Inhalation and Dosage Monograph. Rochester, MN: Mayo Foundation for Medical Education; 2025. [Accessed on 02 Jun. 2026] Check here
  4. National Health Service (NHS). Levothyroxine - NHS Medicines Reference Guide. London, UK: NHS; 2025. [Accessed on 02 Jun. 2026] Check here
  5. Levothyroxine sodium. 2018. [Accessed on 04 Apr. 2019] Check here
  6. Levothyroxine Levothyroxine. [Accessed on 04 Apr. 2019] Check here
  7. Levothyroxine [Prescribing Information]. 2022. [Accessed on 07 Aug. 2023]Check here

Country of origin

India

Manufacturer/Marketer address

16th Floor, Godrej BKC, Plot – C, “G” Block, Bandra-Kurla Complex, Bandra (East), Mumbai – 400 051, India
Other Info - THY0222

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