Check your pill
Remember, you worked closely with your doctor to find the Synthroid dose that works for you. So make sure you’re getting the Synthroid that your doctor prefers to manage your hypothyroidism.
Next time you’re at the pharmacy, check your pills to make sure you’re getting Synthroid as your doctor prefers. Know what your pill looks like. Does your pill say “SYNTHROID”? If your pill doesn’t say “SYNTHROID,” speak up. Be clear about your doctor’s preference for Synthroid. When you call in for your refill, let the pharmacist know that your doctor prefers Synthroid.
The Food and Drug Administration has determined that certain levothyroxine products are interchangeable.
The FDA has determined that drugs that are classified as interchangeable can be substituted at the pharmacy. A levothyroxine product that is not interchangeable with Synthroid might not have the exact same effect on your TSH as Synthroid.