Synthroid

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Available Form:  

TABLET

Manufacturer name:  

Bgp Pharma Inc

Generic name:  

LEVOTHYROXINE

Strength:  

25MCG, 50MCG, 75MCG, 88MCG, 100MCG, 112MCG, 125MCG, 137MCG, 150MCG, 175MCG, 200MCG, 300MCG

What is Synthroid?

Synthroid is a prescription-based hormone replacement therapy containing Levothyroxine which replaces the body’s natural thyroid hormone, thyroxine. It is used for the management of hypothyroidism and is consumed mainly through the oral route.

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Synthroid Price and Cost Calculator

ELTROXIN 50 MCG

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SYNTHROID 137MCG

Quantity

Total no. of TABLET(S)

Insurance coverage

We accept all insurance plans

Estimated copay

$2.90  

Drug cost

$3.46

Dispensing fee

$11.00

Delivery cost

FREE

Insurance coverage

$11.56

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**Actual price will depend on the insurance coverage in your province

Synthroid frequently asked questions

What are the common side effects associated with Synthroid?

Fever, hot flashes, sensitivity to heat, sweating, headache, nervousness, irritability, and nausea are the common side effects associated with Synthroid.

What is Synthroid, and for what is it used?

Synthroid is mainly used in hormone replacement therapy that contains Levothyroxine for the management of hypothyroidism.

How effective is Synthroid?

Synthroid has been found effective in lowering the thyroid-stimulating hormone levels typically within six weeks of treatment. It has also been reported to be more effective than generic Levothyroxine.

How long do Synthroid side effects last?

The side effects will only happen when you take an overdose of Synthroid and usually go away once you lower the dose. However, if they don't go, talk to your doctor immediately to avoid complications.

What is the correct dose of Synthroid?

Your doctor will decide the right dose for you based on your condition and other factors. Usually, your doctor will start with one daily dose to be taken on an empty stomach. Your doctor will evaluate the need for dose adjustments from time to time.

How long should I continue taking Synthroid?

Synthroid is a hormone replacement therapy that is usually taken throughout life, and it may take several weeks to notice an improvement in your symptoms.

Is it safe to buy Synthroid online?

Yes, it is safe to buy this medicine online as long as you have a prescription from a certified medical practitioner.

How does Synthroid work?

Synthroid contains Levothyroxine, a human-made hormone that replaces your body’s natural hormone and exerts the same effect on the body. It restores your normal thyroid hormone levels in the body.

Uses

Synthroid, containing Levothyroxine, is indicated:

  • As a hormone replacement therapy for the management of hypothyroidism
  • As add-on therapy to surgery and radiotherapy in patients with thyroid cancer

Synthroid can also be prescribed for other indications. Patients must ask their healthcare providers for detailed information about the medicine.

Directions for Use

Synthroid is available in many forms -- tablets, capsules, solution, and intravenous Levothyroxine. Read the patient information leaflet if available from the pharmacist before you start consuming the medication. If you have any questions, ask your physician or pharmacist. Here are the directions for its usage:

  • Administer Synthroid on an empty stomach as a single dose, preferably one hour before breakfast.
  • Avoid taking Synthroid along with other medicines, especially those containing iron and calcium. Take it four hours before or after taking the other medicines as they may affect the absorption of Synthroid.
  • Take the doses recommended by your doctor, as the quantities are based on your age, body weight, and condition.
  • Crush the tablet of Synthroid when it needs to be given to infants and children incapable of swallowing an intact tablet. Mix it in a small quantity (one to two teaspoonfuls) of water and give it using a spoon to the child. Never store the crushed tablet or water mixture, and do not give this medication with any soybean-based infant formula as it may lead to a severe interaction.3
  • Avoid taking Synthroid along with antacids.
  • You should use this medication daily or as prescribed by your physician to obtain the maximum benefit of the treatment.  Try to take the medication at the same time daily. 
  • Do not stop taking this medication without consulting your doctor. Thyroid replacement treatment is often prescribed for a very long period.
  • Do not switch to other brands without consulting your physician. 
  • In case of missed dose: Take Synthroid the moment it is possible. However, leave out the missed dose if it is nearly the time for the next dose. Avoid taking two doses at one time.

Side Effects

Common

  • Headache
  • Hot flashes
  • Temporary loss of hair
  • Nausea
  • Sleep problems
  • Mood changes like irritability
  • Changes in appetite or weight
  • Fever

Rare

  • Allergic reactions
  • Trouble breathing
  • Cardiac failure
  • Abnormal heart rhythms
  • Blurred or double vision
  • Dizziness
  • Eye pain
  • Seizures
  • Knee or hip pain

This is not a complete list of side effects, and others may take place. One must always check with their physician about other possible side effects.

Ingredients and Benefits

Synthroid contains Levothyroxine, a human-made hormone that

  • Replaces the body’s natural hormone, which is not sufficiently produced by the thyroid gland 
  • Exerts the same effect on the body as the natural thyroid hormone – thyroxine (which plays a key role in metabolism, heart function, gut health, bone health, as well as brain development 5).
  • Restores normal thyroid hormone levels in the body
  • It may be used in a certain type of cancer (mainly as an adjuvant)

Synthroid Contraindications

Synthroid is contraindicated in patients with 

  • Uncorrected adrenal insufficiency
  • Acute myocardial infarction
  • Acute myocarditis
  • Pancarditis
  • Active heart arrhythmias
  • Thyrotoxicosis or hyperthyroidism
  • Myxedema Coma
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Your privacy is important. That's why we send your medication inside a plain delivery box so no one will know what's inside.

Synthroid Precautions

Interactions

Thyroid hormone levels affect the action of many medications. Many medications are seen to increase or decrease the effects of Synthroid.

These medications may include:

  • Calcium carbonate
  • Stomach acid reducers such as lansoprazole, omeprazole, and esomeprazole
  • Ferrous sulphate iron supplement
  • Cholestyramine
  • Proton pump inhibitors (Pantoprazole, Omeprazole)
  • Antacids containing aluminum or magnesium such as Milk of Magnesia 3
  • Seizure medications such as carbamazepine and phenytoin
  • Tamoxifen
  • Methadone
  • Glucocorticoids
  • Carbamazepine
  • Rifampin
  • Furosemide 
  • Amiodarone
  • Estrogens like in hormone replacement therapy (HRT)
  • Antidiabetics
  • Blood thinners such as warfarin

Many medications are found to interact with Levothyroxine. Not all possible interactions are mentioned here; other medicines may also interact. Inform your doctor regarding all the current medicines.

Synthroid Warnings

Warnings and Precautions

  • You should inform your pharmacist or physician if you are allergic to it or if you have any other allergies. 
  • You should be careful about your dosage of Synthroid, especially if you are 50 years of age or more or have an underlying cardiac disease, as it is associated with an increased risk of cardiac adverse reactions.
  • You should avoid using Synthroid if you suffer from uncorrected adrenal problems.
  • You should not use Synthroid alone or with other drugs to treat obesity or weight loss.
  • You should get your lab tests done regularly as too much Synthroid is associated with loss of bone mineral density, mainly in women undergoing menopause.
  • If you have diabetes, you should get your blood sugar checked regularly as this medication may affect your blood sugar levels.
  • You should avoid certain foods like soybean flour, cottonseed meal, walnuts, and products containing iron or calcium, as they are known to slow down the absorption of Synthroid. 
  • You must inform your doctor if you are pregnant or planning to become pregnant as the dose of Synthroid needs to be increased during pregnancy.
  • Levothyroxine passes into breast milk, it is unlikely to harm a nursing infant. It is best to discuss with the doctor before breast feeding.
  • You must inform your doctor about all the other medications you are taking.
  • You should inform your doctor or dentist about Synthroid before any surgery.
  • Contact your doctor immediately if you experience any of the following: 
  1. Rapid or abnormal heartbeat 
  2. Chest pain 
  3. Breathing difficulty 
  4. Leg cramps 
  5. Nervousness 
  6. Headache 
  7. Irritability 
  8. Sleeplessness 
  9. Shaking
  10. Change in appetite 
  11. Weight gain or loss 
  12. Vomiting 
  13. Diarrhea 
  14. Increased sweating
  15. Difficulty tolerating heat 
  16. Fever 
  17. Changes in the menstrual cycle 
  18. Swollen red bumps on the skin (hives) or skin rash, or any other unusual medical event.

Storage and Disposal

  • Store Synthroid at room temperature 25°C (77°F).
  • Keep Synthroid out of the reach of children.
  • Avoid direct exposure to light and moisture.
  • Discard the medication properly if it has expired or is no longer required.

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