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The Thyroxine 12.5 mcg Tablet is a prescription medicine containing levothyroxine sodium, a synthetic version of the thyroid hormone, used to treat an underactive thyroid gland (hypothyroidism). It is a long-term medication that helps restore normal hormone levels, regulate metabolism, and alleviate symptoms like fatigue, weight gain, and cold sensitivity.
Active Ingredient
- Levothyroxine Sodium (12.5 mcg): This synthetic hormone replaces the thyroxine (T4) that the body’s thyroid gland cannot produce in sufficient quantity. Once in the body, it is converted into the active hormone T3, which manages the body’s metabolic processes.
Key Uses and Benefits
The 12.5 mcg dosage is typically one of the starting doses or an adjustment dose for managing hypothyroidism:
- Hypothyroidism Treatment: It restores normal thyroid hormone levels, improving energy, mood, and physical health.
- Goiter Management: It can prevent or treat an enlarged thyroid gland (goiter) caused by hormone imbalances.
- Thyroid Cancer: It may be used in conjunction with other treatments for certain types of thyroid cancer.
Potential Side Effects and Precautions
Side effects typically occur if the dosage is too high. Common side effects may include:
- Headache, nervousness, or irritability
- Palpitations or rapid heartbeat
- Diarrhea, increased appetite, or weight loss
- Sleep disturbances (insomnia)
- Menstrual irregularities or temporary hair loss
Important Precautions:
- Prescription Only: Thyroxine tablets are only available with a doctor’s prescription and the dosage must be determined by regular blood tests.
- Timing: It must be taken on an empty stomach (ideally the first thing in the morning) at least 30-60 minutes before breakfast, as food (especially soy products, calcium, and iron-rich foods) can interfere with absorption.
- Lifelong Medication: Hypothyroidism is usually a chronic condition requiring lifelong treatment. Do not stop taking the medicine without consulting your doctor.
- Interactions: Leave a gap of at least 4 hours before taking antacids, calcium or iron supplements, as they can reduce the medicine’s effectiveness.
Always consult your doctor regarding the appropriate dose and brand of medication, as formulations may vary and require monitoring.
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