Description

Description

Thyroxine 50mcg is a prescription medicine manufactured by GSK Pakistan Limited, containing Levothyroxine Sodium as its active ingredient. It is a synthetic form of thyroxine (T4), a hormone normally produced by the thyroid gland that plays a central role in regulating metabolism, energy levels, and the normal functioning of nearly every organ system in the body. Thyroxine is used to replace or supplement the body’s natural hormone levels in individuals whose thyroid gland is not producing enough of this hormone on its own. Because thyroid hormone requirements are highly individual and can change over time, treatment with this medicine requires ongoing monitoring and adjustment by a doctor. Each pack contains 100 tablets, intended for long-term, once-daily use exactly as prescribed.

Ingredients

The active ingredient in each tablet is Levothyroxine Sodium at a strength of 50mcg. The tablet also contains standard inactive excipients, such as fillers and binding agents, which give it its physical structure and support consistent absorption once taken. These excipients have no hormonal activity of their own.

Dosage Form

Thyroxine is supplied as an oral tablet, manufactured to a precise 50mcg strength for accurate, consistent dosing. Because even small variations in dose can affect thyroid hormone levels, tablets should be taken exactly as prescribed and should not be substituted with a different brand or strength without your doctor’s knowledge.

Uses

Thyroxine (Levothyroxine Sodium) is prescribed for:

• Hypothyroidism: Used as replacement therapy for an underactive thyroid gland, helping restore normal hormone levels and relieve symptoms such as fatigue, weight gain, and sensitivity to cold.
• Thyroid Hormone Suppression Therapy: Sometimes used to suppress thyroid-stimulating hormone (TSH) levels in certain thyroid conditions, as determined by a doctor.
• Post-Surgical or Post-Treatment Thyroid Support: May be prescribed following thyroid surgery or other treatments that reduce the thyroid gland’s natural hormone production.

The exact dose required varies significantly between individuals and is determined by a doctor based on regular blood tests and clinical assessment.

How to Use

Thyroxine should be taken exactly as prescribed by your doctor, ideally first thing in the morning on an empty stomach, at least thirty minutes before eating, to help ensure consistent absorption. It should be taken with a full glass of water. Certain substances, including calcium supplements, iron supplements, and antacids, can interfere with the absorption of this medicine, so it’s generally recommended to separate these by at least four hours from your Thyroxine dose. Because it can take several weeks for the full effect of a dose change to become apparent, your doctor will typically schedule periodic blood tests to check your thyroid hormone levels and adjust your dose as needed. Do not stop taking this medicine or change your dose without medical advice, even if you feel well, since ongoing hormone replacement is usually needed long-term. If a dose is missed, take it as soon as you remember on the same day, or follow your doctor’s specific guidance on managing missed doses.

Side Effects

When the dose is correctly matched to your body’s needs, Thyroxine typically causes few side effects. Most side effects that do occur are related to the dose being too high, and can resemble symptoms of an overactive thyroid, including a fast or irregular heartbeat, nervousness, tremor, difficulty sleeping, excessive sweating, weight loss, or increased appetite. If you experience chest pain, palpitations, or shortness of breath, seek medical attention promptly, as these may indicate the dose needs to be reassessed. Long-term use of a dose that is too high can also affect bone health over time. This is not an exhaustive list of possible side effects, and any new or unusual symptoms should be discussed with your doctor, who may recommend a blood test to check your current hormone levels.

Pregnancy & Breastfeeding

Thyroxine is considered an important and generally safe treatment during pregnancy, since properly managed thyroid hormone levels are essential for both maternal health and healthy fetal development. In fact, hormone requirements often increase during pregnancy, so your doctor will likely monitor your thyroid levels more frequently and may adjust your dose, particularly during each trimester. It is important not to stop or reduce this medicine on your own if you become pregnant — instead, inform your doctor as soon as possible so your treatment can be reviewed and adjusted appropriately. Thyroxine is also considered compatible with breastfeeding, as it closely replaces a hormone the body naturally produces. Any changes to your dose during pregnancy or breastfeeding should always be guided by your doctor based on regular monitoring.

Storage Instructions

Store Thyroxine tablets at room temperature, away from direct sunlight, excessive heat, and moisture. Keep the tablets in their original packaging until ready for use, ensuring the container remains tightly closed. Store this medicine out of the reach and sight of children and pets. Do not use tablets beyond their printed expiry date, and dispose of any unused or expired medicine responsibly rather than through household waste.

FAQS

Why is it important to take Thyroxine on an empty stomach? Food, and certain supplements like calcium and iron, can interfere with how well this medicine is absorbed. Taking it consistently on an empty stomach helps maintain steady, predictable hormone levels.

Why do I need regular blood tests while taking this medicine? Because thyroid hormone needs are highly individual and can change over time, your doctor uses blood tests to check whether your current dose is keeping your hormone levels in the right range.

Can I switch between different brands of levothyroxine? It’s best to stick with the same brand consistently, since different formulations can sometimes be absorbed slightly differently. If a change is necessary, your doctor may want to recheck your thyroid levels afterward.

Will I need to take this medicine for the rest of my life? Many people with an underactive thyroid require lifelong hormone replacement, though your doctor will confirm what’s appropriate for your specific situation based on the underlying cause of your condition.

Disclaimer

Always use this medicine strictly according to your doctor’s instructions and prescribed dosage.