Thyrosit 100mcg Tablet
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Overview
Thyrosit 100mcg Tablet is supplied as a tablet, with Levothyroxine sodium 100mcg. It is supplied in a pack size of 10s.
No prescription is required for this product, as it is a non-prescription medicine. This page is limited to product, safety and handling information.
If you would like guidance before buying, you can speak to a doctor or pharmacist through an online consultation on DoctorOnCall. Orders are dispensed by a registered pharmacist and delivered to your address.
Directions for Use
Take Thyrosit exactly as prescribed by your doctor, usually as a single dose once daily on an empty stomach, at least 30 to 60 minutes before breakfast or any other medication, with a full glass of plain water. Swallow the tablet whole and try to take it at the same time each day to keep your hormone levels stable; do not stop or change your dose without your doctor’s advice, even if you feel well.
Dosage
The 100mcg strength is one of several available doses of levothyroxine, and your doctor will determine the correct starting dose and any adjustments based on your age, weight, cardiac health, and thyroid blood test results. Dose changes are usually made gradually, with blood tests repeated after 4 to 6 weeks, and only a doctor should decide whether to increase, decrease, or maintain your current dose of Thyrosit.
Shelf Life
Thyrosit 100mcg Tablet is typically stable for the shelf life stated on the pack when stored correctly and unopened; always check the expiry date printed on the packaging and do not use the tablets after this date.
Storage Instructions
Store Thyrosit below 25°C in a cool, dry place away from direct sunlight and moisture, in its original packaging to protect it from light. Keep out of reach and sight of children, and do not store in the bathroom or near a sink.
Side Effects
- Headache
- Nervousness or anxiety
- Sleeplessness (insomnia)
- Increased appetite
- Weight loss
- Sweating
- Palpitations or rapid heartbeat
- Menstrual irregularities
Contraindications
- Untreated adrenal gland insufficiency (Addison’s disease)
- Untreated overactive thyroid (thyrotoxicosis)
- Known hypersensitivity to levothyroxine or any ingredient in this tablet
- Recent heart attack (acute myocardial infarction)
- Use with caution in elderly patients or those with existing heart disease, angina, or arrhythmias
Drug / Food Interactions
- Calcium supplements, iron supplements, and antacids can reduce absorption if taken too close together — separate doses by at least 4 hours
- Cholestyramine and some cholesterol-lowering resins can reduce levothyroxine absorption
- Warfarin and other blood-thinning medicines may need dose adjustment as levothyroxine can enhance their effect
- Certain antidepressants and diabetes medicines may need dose review once thyroid levels normalise
- High-fibre meals and soy-based foods taken at the same time may reduce absorption
Quick Tips
- Take Thyrosit at the same time every morning, ideally on an empty stomach
- Keep regular appointments for thyroid function blood tests as advised by your doctor
- Do not switch between different brands of levothyroxine without your doctor’s knowledge
- Report new palpitations, chest pain, or unusual weight changes to your doctor promptly
- Continue treatment even when you feel well — hypothyroidism usually requires long-term therapy
Frequently Asked Questions
Do I need a prescription to buy Thyrosit 100mcg Tablet?
No. Thyrosit 100mcg Tablet is a non-prescription product and can be ordered without a prescription. It is still dispensed by a registered pharmacist on DoctorOnCall.
What does Thyrosit 100mcg Tablet contain?
Thyrosit 100mcg Tablet is a tablet containing Levothyroxine sodium 100mcg. The full ingredient list is shown in the Composition or Ingredients section on this page and on the product packaging.
What pack sizes does Thyrosit 100mcg Tablet come in?
It is supplied in a pack size of 10s. Choose the pack size you need from the options shown on this page before adding the item to your cart.
Why is there no information here about what Thyrosit 100mcg Tablet is for?
This page is limited to product, safety and handling information in line with Malaysian rules on medicine information. If you want advice on whether this product suits you, book an online consultation with a doctor or pharmacist on DoctorOnCall.
How should I use Thyrosit 100mcg Tablet?
Follow the instructions printed on the label and in the leaflet supplied with the pack, and do not exceed the stated amount or duration. Handling steps are set out in the Directions for Use section on this page.
Can I speak to a doctor or pharmacist about Thyrosit 100mcg Tablet before I buy it?
Yes. DoctorOnCall offers online consultations with licensed doctors and registered pharmacists, so you can ask about this product, your existing medicines, or anything on the label before you place an order.
How should I store Thyrosit 100mcg Tablet?
Store Thyrosit below 25°C in a cool, dry place away from direct sunlight and moisture, in its original packaging to protect it from light. Keep out of reach and sight of children, and do not store in the bathroom or near a sink. Keep it in its original pack and do not use it after the expiry date printed on the packaging.
What should I do if I notice side effects after using Thyrosit 100mcg Tablet?
Stop using the product and speak to a doctor or pharmacist about any reaction that concerns you. Seek medical care immediately for signs of a severe reaction such as difficulty breathing, swelling of the face, lips or throat, or a widespread rash. Reported reactions are listed in the Side Effects section on this page.
How long will delivery take?
Within Malaysia, standard delivery takes 3 to 5 working days. Same-day delivery is available in the Klang Valley for orders placed before 12pm; orders placed after 12pm arrive by the end of the next day.
Orders to Singapore are sent as international deliveries and take 5 to 9 working days. A lump-sum shipping and handling fee applies to every overseas delivery and is shown at checkout.
What payment methods can I use?
Customers in Malaysia can pay by FPX online banking, credit or debit card (Visa and Mastercard), and supported e-wallets including Touch ‘n Go eWallet, GrabPay and ShopeePay.
FPX and local e-wallets are tied to Malaysian bank and wallet accounts, so if your delivery address is in Singapore, use the payment options displayed at checkout for that address rather than assuming the same list applies.
Can Thyrosit 100mcg Tablet be delivered to Singapore?
Yes. DoctorOnCall ships to Singapore as an international order dispatched from Malaysia, arriving in 5 to 9 working days with a lump-sum shipping and handling fee.
Singapore’s Health Sciences Authority (HSA) allows personal imports of up to three months’ supply of a medicine for your own use or an immediate family member’s, as long as it contains no controlled drugs, psychotropic substances or prohibited items. Keep the product in its original labelled packaging and keep a copy of your prescription or doctor’s letter with it. Quantities above three months’ supply, and medicines containing controlled substances, require prior HSA approval.
Is Thyrosit 100mcg Tablet registered with the authorities?
Products listed on DoctorOnCall are registered with Malaysia’s Ministry of Health for supply in Malaysia, and each pack carries its MAL registration number.
An order delivered to Singapore arrives as a personal import of a Malaysia-registered product; HSA product registration is not required for personal-use quantities, but it is also not the same as a product registered for sale in Singapore. If you need a locally registered Singapore product, buy it from a pharmacy in Singapore.
Who do I contact if there is a problem with my order?
DoctorOnCall’s customer care team handles order, delivery and product queries through the contact channels on the site, including WhatsApp and the online help centre.
For deliveries to Singapore, allow more time before chasing an order than you would for a local Malaysian delivery, as the parcel passes through customs clearance and tracking updates can appear later in the journey.
Ingredients / Active Ingredients
- Levothyroxine sodium 100mcg
- Standard tablet excipients as listed on the product packaging
Safety Advice
Pregnancy
This medicine should only be used during pregnancy if prescribed by a doctor after careful evaluation.
Breastfeeding
This medicine is generally safe during breastfeeding with minimal risk to the infant.
Kidney
Use cautiously. Dose adjustment or monitoring may be required.
Liver
Use only if prescribed, with possible monitoring.
Alcohol
Caution is advised when consuming alcohol with this medicine.
Driving
This medicine is generally safe and should not impair your driving ability.
Relevant Information
Levothyroxine replacement is usually a long-term or lifelong treatment, and getting the dose right matters — too little will not relieve hypothyroid symptoms, while too much can cause symptoms of an overactive thyroid and put strain on the heart. Your doctor may start at a lower dose and titrate upward gradually, especially in older adults or those with heart conditions, and will use periodic blood tests to fine-tune your Thyrosit dose over time.
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