How Methimazole 5mg Works: A Complete Overview of This Thyroid Medication

Feb 18, 2025

Introduction

METHIMZOLE 5 is a prescription medication containing Methimazole (5mg), which is primarily used to treat hyperthyroidism. It belongs to a class of drugs known as antithyroid agents and works by reducing the excessive production of thyroid hormones by the thyroid gland. This medication is widely prescribed to manage Graves’ disease, an overactive thyroid, and is sometimes used before thyroid surgery or radioactive iodine therapy.

Key Ingredients

The primary active ingredient in METHIMZOLE 5 is Methimazole (5mg), which effectively inhibits the thyroid gland's ability to produce excessive hormones. The formulation may also include inactive ingredients that help in the tablet’s stability and absorption.

Key Benefits of METHIMZOLE 5

  • Controls Hyperthyroidism: Reduces the excessive secretion of thyroid hormones.

  • Manages Graves’ Disease: Helps alleviate symptoms of thyroid overactivity.

  • Prepares for Thyroid Surgery: Stabilizes thyroid function before surgical intervention.

  • Assists in Radioactive Iodine Therapy: Prepares the thyroid for effective treatment.

  • Minimizes Thyroid Storm Risk: Prevents severe complications related to hyperthyroidism.

How Does METHIMZOLE 5 Work?

Methimazole (5mg) functions by inhibiting thyroid peroxidase, an enzyme crucial for the production of thyroxine (T4) and triiodothyronine (T3). By blocking the synthesis of these hormones, it effectively lowers thyroid hormone levels, reducing symptoms such as rapid heartbeat, weight loss, tremors, and nervousness.

Dosage and Administration

The dosage of METHIMZOLE 5 depends on the severity of hyperthyroidism and individual patient response. Generally, the recommended dose is:

  • Mild hyperthyroidism: 5–10 mg per day.

  • Moderate to severe hyperthyroidism: 15–40 mg per day, divided into multiple doses.

  • Pediatric dosage: Determined by the physician based on body weight.

How to Take METHIMZOLE 5?

  • Take the tablet orally with or without food.

  • Maintain a consistent time daily to optimize effectiveness.

  • Do not suddenly stop taking the medication without consulting a doctor.

  • If a dose is missed, take it as soon as possible unless it is close to the next dose.

Possible Side Effects

While METHIMZOLE 5 is effective in controlling hyperthyroidism, it may cause some side effects. Common side effects include:

  • Nausea and Vomiting

  • Skin Rash or Itching

  • Dizziness and Drowsiness

  • Joint Pain or Muscle Aches

  • Hair Loss (Temporary)

Serious Side Effects

  • Agranulocytosis (Severe drop in white blood cells)

  • Liver Toxicity (Yellowing of the skin, dark urine, abdominal pain)

  • Excessive Fatigue or Weakness

  • Signs of Infection (Fever, Sore Throat)

Seek immediate medical attention if you experience severe side effects.

Precautions and Warnings

  • Pregnancy and Breastfeeding: Consult your doctor as Methimazole (5mg) may cross the placenta and affect the baby.

  • Liver Disease: Patients with pre-existing liver conditions should use caution.

  • Blood Disorders: Regular monitoring of white blood cell counts is necessary.

  • Allergic Reactions: If you have a known allergy to Methimazole, avoid this medication.

  • Drug Interactions: May interact with anticoagulants, beta-blockers, and certain antibiotics.

Price and Availability in India

The price of METHIMZOLE 5 varies depending on the manufacturer and pharmacy. In India, a strip of 10 tablets typically costs between ₹50-₹150. Always purchase from a trusted pharmacy with a valid prescription.

Conclusion

METHIMZOLE 5 containing Methimazole (5mg) is an essential medication for hyperthyroidism management. By effectively reducing thyroid hormone production, it helps alleviate symptoms and prevents serious complications. However, regular medical supervision is essential to monitor side effects and ensure safe usage. Always follow the doctor’s instructions and undergo periodic thyroid function tests to adjust the dosage as needed.

For any concerns regarding METHIMZOLE 5, consult your healthcare provider to determine if this medication is suitable for you.

About The Author

STERIS HEALTHCARE PVT LTD

Steris Healthcare Pvt Ltd, known as Sterispharma, was founded in February 2018 by a team of experienced professionals in the pharmaceutical industry. Headquartered in Navi Mumbai, the company holds certifications from WHO, GMP, and ISO, reflecting its dedication to maintaining high standards of quality and safety. Sterispharma’s mission is to provide affordable, high-quality medications across India, strictly adhering to WHO guidelines. With the convenience of an online pharmacy, customers can easily order medicines with home delivery options.

For further information 

Email: info@sterispharma.com / contact@sterispharma.com

Call/WhatsApp: 8209542042 , 8824175417

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