Synthroid Tablets (Levothyroxine)
Synthroid Tablets (Levothyroxine)
Levothyroxine Sodium
Product information
Synthroid (levothyroxine sodium) tablets treat hypothyroidism by replacing or supplementing thyroid hormone. Available in various strengths, it should be taken once daily on an empty stomach. Dosages are individualized. Common side effects include increased heart rate and insomnia. Avoid certain medications and foods that affect absorption. Regular monitoring by a healthcare provider is essential to ensure proper dosage and effectiveness.
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SYNTHROID - Canada Product Information
What is Synthroid?
Synthroid is a medication containing levothyroxine sodium, a synthetic thyroid hormone. It is used to treat hypothyroidism, a condition where your thyroid gland doesn't produce enough thyroid hormone.
What is Hypothyroidism?
Hypothyroidism occurs when your thyroid gland, which is located in your neck, does not produce enough thyroid hormone. This hormone is essential for regulating your metabolism, energy levels, and overall growth and development.
Who Can Take Synthroid?
- Adults and Children: Synthroid is suitable for both adults and children who have hypothyroidism.
- Pregnant Women: If you are pregnant, it is crucial to maintain normal thyroid levels for your health and your baby’s development.
- Elderly: Older adults may require different dosages due to changes in metabolism and the presence of other medical conditions.
How to Take Synthroid
- Dosage: Your doctor will determine the appropriate dose based on your age, weight, and thyroid hormone levels. It’s important to follow their instructions carefully.
- Administration: Take Synthroid once daily on an empty stomach, at least 30 to 60 minutes before breakfast. Consistency is key, so take it at the same time every day.
- Missed Dose: If you miss a dose, take it as soon as you remember. If it’s almost time for your next dose, skip the missed dose—do not take two doses at once.
Possible Side Effects
While Synthroid is generally well-tolerated, some people may experience side effects, especially if the dose is too high. Common side effects include:
- Increased heart rate
- Anxiety
- Weight loss
- Sweating
- Insomnia
- Menstrual irregularities
If you experience severe side effects like chest pain, rapid or irregular heartbeat, or difficulty breathing, seek medical attention immediately.
Drug Interactions
Certain medications and foods can affect how Synthroid works, such as:
- Antacids
- Calcium supplements
- Iron supplements
- Soy products
- High-fiber foods
Always inform your doctor of all medications and supplements you are taking.
Special Precautions
- Cardiovascular Disease: If you have heart disease, your doctor may start you on a lower dose and adjust it slowly.
- Diabetes: Synthroid can affect blood sugar levels, so monitor your levels closely and inform your doctor of any changes.
- Pregnancy and Breastfeeding: Thyroid hormone levels are crucial during pregnancy and breastfeeding. Your doctor may adjust your dose during these times.
Storage
Store Synthroid tablets at room temperature, away from moisture and heat. Keep out of reach of children.
When to See Your Doctor
Regular check-ups are necessary to monitor your thyroid hormone levels and adjust the dosage if needed. If you experience any new or worsening symptoms, contact your healthcare provider.
Reference: Synthroid Canada product monograph