If you’re reading this, you’ve likely been diagnosed with hypothyroidism or a similar thyroid condition. Don’t worry you’re not alone. It turns out that over 12% of Americans will develop a thyroid condition in their lifetimes.

If you’re confused about the medications you have to begin taking, you’re not alone on this front either. Thyroid meds are confusing, so we frequently get asked questions regarding Synthroid vs. levothyroxine: “Is there a difference between the two? Which one is better? Can I use them interchangeably?”

Below, we’ll give you all the information you need to know regarding these two drugs.

Synthroid vs. Levothyroxine

It’s important to note that these two drugs are both used to treat thyroid conditions and are very similar in chemical compositions, but are very different in some key ways. Let’s break down both of them.

Key Similarities

Levothyroxine is commonly known as the “generic” version of Synthroid. Generally speaking, when a drug gets patented, it is given a brand name. This is what happened with Synthroid.

Once the patent expires, other drug companies create copycat, or generic, versions of the same drug, which is why we now have levothyroxine.

Because of this, the two drugs are nearly the same, as they both contain the same active ingredient, Thyroxine. This active ingredient is biologically identical to the T4 hormone that is naturally produced by your thyroid gland.

This is what makes either drug a great hormone replacement if you have an inactive thyroid.

Key Differences

But while these drugs have the same active ingredient, they do not have the same inactive ingredients. Inactive ingredients in drugs are the dyes, fillers, and binders that accompany the active ingredient to make sure it functions properly.

While this may seem like no big issues, some inactive ingredients may cause adverse reactions in patients with allergies or sensitives to certain ingredients.

Things to Consider When Switching

if you’re suffering from side effects of Synthroid or Levothyroxine, you may want to consider from switching to one or the other.

There may be a chance that those negative side effects aren’t coming from the Thyroxine itself but from one of the inactive ingredients. If this is the case, you may find great relief in switching.

Studies have even found that, somewhat remarkably, the two drugs affect the hormonal balances of patients differently despite having the same active ingredient.

But before making the switch, you’ll have to speak with your doctor about your side effects if you haven’t already. At the end of the day, only he or she can adequately advise you on your best course of action.

Need to Find the Best Price on Your Meds?

As I’m sure you already know, prescription drug prices can be very expensive, especially for thyroid diseases. If you’re looking for a place to compare drug prices and find a recommendation on the best pharmacies, you might want to check out our pharmacy reviews.

Now that you know the differences between Synthroid vs. levothyroxine, you’ll be able to find the best medication, at the best price.