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What is Synthroid?

Synthroid is a thyroid medication containing levothyroxine. Synthroid replaces natural hormones in your thyroid gland in order to regulate your body’s energy and metabolism. Synthroid may also be prescribed to treat hypothyroidism and goitre. Levothyroxine is prescribed when your thyroid does not produce enough of the natural hormone by itself. Having enough thyroid hormone is important for normal physical and mental development.

Always read the medication information and instructions before using this medication.
Always follow your doctor’s directions.

• Synthroid is typically taken once a day.
• Synthroid should be taken on an empty stomach between 30 minutes and an hour prior to breakfast.
• Swallow Synthroid whole with a full glass of water. Do not chew or crush capsules.
• If you struggle to swallow this medication whole, it can be crushed and mixed into one or two teaspoons of water and taken immediately.
• It may be several weeks before you notice an improvement in your symptoms.
• Speak to your doctor if your condition does not improve.

Make sure to tell your doctor:

• If you have any drug or other allergies.
• If you take any other prescription or over-the-counter medications.
• Your medical history especially of bleeding problems, diabetes, adrenal insufficiency, hardening of the arteries, pituitary gland disorders, osteoporosis, heart disease, kidney disease, liver disease or any condition which makes swallowing difficult.
• If you are pregnant or planning on pregnancy as your dosage may need to be altered.
• If you are breast feeding as your dosage may need to be altered.
• If you have recently received radiation therapy with iodine.

Other information you should also know:

• Before any surgery, dental surgery or emergency procedures, all of your doctor’s should be aware that you take Synthroid.

Common side effects of Synthroid:

• Muscle weakness.
• Headaches.
• Leg cramps.
• Nervousness.
• Diarrhea.
• Skin rashes.
• Trouble sleeping.

If you have any of the following levothyroxine side effects, seek medical help:

• Fever, hot flashes, sweating or feeling unusually cold.
• Shortness of breath.
• Chest pain or fast or irregular heartbeats.
• Sleep problems or tiredness.
• Diarrhea or vomiting.
• Tremors.
• Changes to your menstrual periods.
• Memory problems.
• Feeling depressed or irritable.
• Weight or appetite changes.
• Weakness.
• Skin dryness, hair dryness or hair loss.
• Symptoms of an allergic reaction including difficulty breathing, hives or swelling in your face, lips or throat.

What should I do if I miss a dose of Synthroid?

If you miss a dose of Synthroid, you should take it as soon as you remember. However, if it is almost time for your next dose, then skip your missed dose.

Is there a generic alternative to Synthroid?

There is currently no therapeutically equivalent generic alternative to Synthroid.