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Canada Wide Pharmacy > Drug Category > Thyroid Disorders > Synthroid or Equivalent

Synthroid (Levothyroxine)

TypeDrug NameDosage 
Synthroid25 mcg
Synthroid50 mcg
Synthroid75 mcg
Synthroid88 mcg
Synthroid100 mcg
Synthroid112 mcg
Synthroid125 mcg
Synthroid137 mcg
Synthroid150 mcg
Synthroid175 mcg
Synthroid200 mcg
Synthroid300 mcg

Generic Equivalent of Synthroid

No generic equivalents of Synthroid found.


Is A Prescription Required to Have Synthroid?

A Prescription is required to purchase Synthroid from our fully certified Canadian online pharmacy.

What Is the Drug Synthroid Used For?

Synthroid is a thyroid medication and is prescribed when the thyroid gland does not produce enough hormone (a condition called as hypothyroidism). It is also used for decreasing the size of enlarged thyroid gland (called as goiter) and for the treatment of thyroid cancer.

How Does Synthroid Work in The Body?

The medication Synthroid contains levothyroxine sodium, which is the same as the thyroxine horomone, produced naturally by the thyroid gland in our body. When the body is not able to produce enough thyroid hormones, it leads to hypothyroidism and a state of reduced metabolism in the body. Levothyroxine sodium is intended to replace the thyroxine hormone produced naturally by the thyroid gland. Synthroid restores the thyroid hormone balance.

How Is Synthroid Supplied and Stored?

Synthroid is manufactured by Mylan Pharmaceuticals, Inc. and is available in the dosage forms of 25, 50, 75, 88, 100, 112, 125, 137, 150, 175, 200 and 300 mcg in bottles of 90 tablets each.

The medication should be stored at a temperature between 15°C and 25°C, in a tightly closed container, protected from light and moisture. It should be kept out of sight and reach of children.

What Is the Cost of Synthroid?

The average cost for Synthroid oral tablet 25 mg is around $95 for 90 tablets, which is $1.06 per tablet. Our verified online pharmacy is pleased to offer you the Synthroid 25 mcg at an unbeatable price of $34 for a supply of 90 tablets, which is $0.38 per tablet, 65% off the average retail price of $1.06. Checkout Synthroid prices from verified online pharmacies only!

Is There A Difference Between Levothyroxine and Synthroid?

The medication Synthroid consists of active ingredient called as Levothyroxine. Levothyroxine is the generic form of Synthroid.

What Foods to Avoid While Taking Synthroid?

Taking certain foods with Synthroid may affect the absorption of levothyroxine. These foods include soybean flour, cotton seed meal, walnuts, calcium and calcium fortified orange juice, grapefruit, dietary fiber and magnesium supplements.

What Vitamins Should Not Be Taken with Synthroid?

Vitamins such as magnesium, aluminum and compounds containing these such as antacids, simethicone, sucralfate and iron containing compounds can lead to a decrease in the absorption of Synthroid. Hence, these should not be taken within four hours of taking Synthroid.

Can Synthroid Cause You to Lose Weight?

Synthroid may cause weight gain or loss as a side effect. However, thyroid preparations including Synthroid should not be used for treatment of obesity or for weight loss as they can lead to serious or even life-threatening side effects.

How Do I Take My Synthroid?

Take Synthroid exactly as prescribed by your doctor. Thyroid hormone replacement is usually prescribed for a life time. Do not change the amount of dose or how often you take it, unless advised by your doctor. Synthroid should be taken as a single dose, preferably empty stomach, 30 minutes to one hour before breakfast, with a glass of water. It should be taken at the same time every day.

Can You Eat After Taking Thyroid Medicine?

It is recommended to take the thyroid medication empty stomach and then wait for at least 30 to 60 minutes before eating your meals. This is because absorption of levothyroxine sodium is increased on an empty stomach.

Is Synthroid Vegan?

The inactive ingredients of Synthroid include Acacia, confectioner's sugar, lactose, magnesium stearate, povidone, talc and color additives. Since Synthroid contains lactose (milk sugar), the medication is not vegan.

Can You Overdose on Synthroid?

It is recommended to take the dose of Synthroid as prescribed your doctor. Overdosing Synthroid can lead to thyrotoxicosis. Signs and symptoms include weight loss, increased appetite, palpitations, nervousness, diarrhea, abdominal cramps, sweating, fast heart rate, increased pulse, increased blood pressure, abnormal heartbeats, angina, tremors, loss of sleep, heat intolerance, fever, menstrual irregularity, confusion, disorientation. In addition, clotting in brain, shock, coma and death have also been reported with overdosing of levothyroxine.

What Are the Possible Side Effects of Synthroid?

Side effects with Synthroid include irregular or fast heartbeat, chest pain, nervousness, sweating, weight loss or weight gain, temporary loss of hair, decrease in bone mineral density, diarrhea and vomiting. These are not all the side effects of Synthroid. If you experience any unexpected effect, contact your health care professional.

When Should You Not Take Synthroid?

Do not take Synthroid if you:
  • Are allergic to thyroid hormone or any of the inactive ingredients of Synthroid
  • Have overactive thyroid gland (thyrotoxicosis) due to any cause
  • Uncorrected adrenal gland under activity

What Should You Tell Your Doctor Before Taking Synthroid?

Before you start taking Synthroid, be sure to tell your doctor if you:
  • Are allergic to any food or medications
  • Are pregnant or intend to become pregnant. If you become pregnant while taking Synthroid, your dose of Synthroid will likely have to be increased
  • Are breast feeding
  • Have heart problems, especially had heart attack, heart disease or hardening of arteries
  • Have other medical problems such as high blood pressure, osteoporosis, blood clotting disorder, history of thyroid, pituitary or adrenal gland problems
  • Have diabetes. Your dose of oral anti-diabetic medication or insulin might need to be changed after starting Synthroid. Your blood and urinary sugar levels will be monitored regularly.
  • Have signs and symptoms of any psychiatric disorder
  • Are taking oral anticoagulants such as warfarin. The dose of blood thinner might need to be changed
  • Are planning to undergo any kind of surgery (including dental treatment) or emergency treatment. You should also inform your surgeon or dentist that you are taking Synthroid
  • Your brand of levothyroxine was changed
  • Are a woman on long term therapy. You may experience decrease in bone density
  • Have any allergies to this drug or its ingredients
  • Are taking orlistat (a drug used to treat obesity)

What Medicines Can Interact with Synthroid?

It is important to tell your health care professional about all other medicines that you have taken recently including any kind of supplements and non-prescription drugs. Medicines which interact with Synthroid include:
  • Digitalis glycosides (such as digoxin, used to treat arrhythmia)
  • Anti-diabetic drugs (insulin or hypoglycemic drugs)
  • Glucocorticoids (such as dexamethasone, prednisone)
  • Antacids containing magnesium and aluminium (such as simethicone)
  • Calcium carbonate
  • Diazepam (used to treat anxiety)
  • Ferrous sulphate used to treat anemia
  • Anti-depressants (used to fight depression such as venlafaxine)
  • Lithium (used to treat mania)
  • Iodide
  • Anticoagulants such as warfarin
  • Appetite suppressants (diet pills)
  • Beta-blockers (such as propranolol) used to treat high blood pressure
  • Cholestyramine, colestipol (used to lower blood cholesterol)
  • Medicines used to treat asthma or other breathing problems
  • Medicines used to treat cold sinus problems, hay fever including nose sprays or drops
  • Orlistat (used to treat obesity)
  • Tyrosine kinase inhibitors (such as imatinib, sunitinib) used to fight cancer
  • Proton pump inhibitors such as omeprazole used to treat heartburn, ulcers and acidity

Where Can I Buy Synthroid Online?

If prescribed by your health care professional, Synthroid can be bought directly from Canadian Online Pharmacy. You will not have to wait to start your therapy due to the swift shipping service provided by us.

How Is Synthroid Delivered?

The standard delivery fee is $10.00. The orders are usually shipped in 2-3 working days after the processing of the order. The medication package is delivered by regular mail within 10-14 business days after it has been shipped. For further information and aid, you can contact our Customer Service at 604-581-4000 or email us at


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