Synthroid

Medically Reviewed by Dr. Harshi Dhingra, M.D.

Last Reviewed: Jun 24, 2022

Common Questions


Common Questions about Synthroid (levothyroxine)


Can Synthroid cause weight gain?

Weight gain is not a known side effect of Synthroid. Indeed, Synthroid treats hypothyroidism, and weight gain is a known symptom of this condition.



What foods should be avoided when taking Synthroid?

Foods like walnuts, soybean, dietary fiber, and grapefruit, and beverages like grapefruit juice can make Synthroid less effective. Check with your doctor if you eat or drink these items regularly. 



Can I take Synthroid at night?

Doctors generally recommend taking Synthroid in the morning on an empty stomach about 30-60 minutes before breakfast. Ask your doctor if it is okay for you to take Synthroid at night. You should take your medication at around the same time every day.



What will happen if I eat right after taking Synthroid?

If you eat right after taking Synthroid, the medication may not be adequately absorbed. This can make it less effective.



What happens if you take 2 thyroid pills in one day?

Taking one extra dose of levothyroxine by accident is unlikely to cause any harm. However, if you accidentally take more than one extra dose, contact your doctor. You may get side effects like chest pain or a racing heart, which can happen even several days after taking the extra dose.



How much does Synthroid cost out of pocket?

The cost of Synthroid is around $150 for a 90 day prescription of the 100 mcg dose with a BuzzRx coupon. Other than this, the drug manufacturer also runs a Before Breakfast Club where you can benefit from programs like the Synthroid Delivers Program and Synthroid Co-Pay Card. These are programs for people who have purchased private health insurance and are designed to help with out-of-pocket expenses, subject to monthly maximums. Eligibility restrictions apply. They are available to patients with commercial prescription insurance coverage who meet eligibility criteria. The Synthroid Copay Card is not available to patients receiving prescription reimbursement under federal, state, or government-funded insurance programs like Medicare Part D, Medicare Advantage, Medigap, Medicaid, TRICARE, Department of Defense, or Veterans Affairs programs. 



What is the price of Synthroid with insurance?

Ask your pharmacist or insurance provider for your copay price on Synthroid —copay amounts vary depending on the type of insurance plan you have and if there is a deductible to reach before prescription drug coverage begins.

You could save up to 80% on your prescription medication with a free BuzzRx discount coupon for citalopram. When using the BuzzRx lookup tool to find the price of your medication, be sure to enter the correct dosage, form, and quantity to receive the most accurate discounted pricing. It never hurts to ask your pharmacist to try BuzzRx when filling or refilling any of your prescriptions—whether you have insurance or not.