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What Are the Different Types of Thyroxine Tablets?

Thyroxine tablets, vital for managing hypothyroidism, come in various brands and dosages, each tailored to individual needs. Synthroid, Levoxyl, and Euthyrox are popular, offering precise hormone levels for optimal thyroid function. Discovering the right type for you involves understanding their subtle differences. Curious about which thyroxine tablet could best support your health? Let's explore the options together.
Tricia Christensen
Tricia Christensen
Tricia Christensen
Tricia Christensen

Thyroxine tablets vary by dosage, color, shape and inactive ingredients. They also may be called different names, and other popular generic names are levothyroxine or T4, while the best known brand name is Synthroid®. Occasionally, thyroxine tablets also include triiodothyronine, which is the other major thyroid replacement hormone, also known as T3. Combination pills with both thyroid hormones may be sold under the generic name, liotrix, and they differ in appearance, shape, and dosage.

There are many different doses of thyroxine tablets available. This medication is potent and all the doses are measured in micrograms (mcg). The lowest strengths may begin at 25 mcg. There are four more strengths of pills with varied doses up to 100 mcg.

Prescription medications such as Synthroid may be prescribed when the thyroid gland does not produce enough thyroxine.
Prescription medications such as Synthroid may be prescribed when the thyroid gland does not produce enough thyroxine.

Seven additional dosage strengths occur after 100 mg, and the maximum amount available in a single tablet is 300 mcg. The huge range in dose is accounted for by the fact that thyroid replacement is highly sensitive and individualized. Taking 10-15 mcg less or more can mean the difference between a positive or negative response to the drug.

Patients using this medication may also notice that thyroxine tablets come in numerous colors. Standard pastels in muted yellows, oranges, greens and blues are as common as white pills. Some manufacturers prefer to dye the tablets deeper colors, and it’s not uncommon to find bright orange, purple, pink, or dark blue. Colors don’t necessarily universally correspond to a specific dosage, and one manufacturer may use a different color than another for the same strength tablets.

Symptoms of hyperthyroidism often include heart palpitations.
Symptoms of hyperthyroidism often include heart palpitations.

Less varied are the shapes of thyroxine tablets. They can either be round or oval/elliptical. Sometimes, the pills are scored, which makes them easier to split. At other times, the tablet is only scored on the top and bottom, but the scoring doesn’t form a continuous line.

The types of inactive ingredients that might be in thyroxine tablets will vary. Different dyes are used to produce muted or florid colors. Most pills will have some similar basic ingredients like lactose, a small amount of sugar, and talc. It may be possible to find a drug that lacks ingredients to which an individual is sensitive because there are so many manufacturers.

Thyroxine tablets are typically white or muted colors such as blue or yellow.
Thyroxine tablets are typically white or muted colors such as blue or yellow.

Patients should not confuse any form of thyroxine tablets with liotrix pills. This drug combines levothyroxine with T3, which may be useful for some individuals who need T4 and T3 thyroid hormone replacement. These tablets may also be round or oval, have numerous colors, and come in a variety of doses. Unlike in levothyroxine tablets, the highest thyroxine dosage in liotrix is 150 mcg. Higher strengths of thyroxine usually aren’t necessary due to the supplementation of T3 at the same time.

Tricia Christensen
Tricia Christensen

Tricia has a Literature degree from Sonoma State University and has been a frequent TheHealthBoard contributor for many years. She is especially passionate about reading and writing, although her other interests include medicine, art, film, history, politics, ethics, and religion. Tricia lives in Northern California and is currently working on her first novel.

Learn more...
Tricia Christensen
Tricia Christensen

Tricia has a Literature degree from Sonoma State University and has been a frequent TheHealthBoard contributor for many years. She is especially passionate about reading and writing, although her other interests include medicine, art, film, history, politics, ethics, and religion. Tricia lives in Northern California and is currently working on her first novel.

Learn more...

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    • Prescription medications such as Synthroid may be prescribed when the thyroid gland does not produce enough thyroxine.
      By: reineg
      Prescription medications such as Synthroid may be prescribed when the thyroid gland does not produce enough thyroxine.
    • Symptoms of hyperthyroidism often include heart palpitations.
      By: Piotr Marcinski
      Symptoms of hyperthyroidism often include heart palpitations.
    • Thyroxine tablets are typically white or muted colors such as blue or yellow.
      By: Mary Hommel
      Thyroxine tablets are typically white or muted colors such as blue or yellow.
    • In most cases, Synthroid reverses the weight gain caused by thyroid issues.
      By: Ljupco Smokovski
      In most cases, Synthroid reverses the weight gain caused by thyroid issues.
    • Thyroxine tablets may come in different colors.
      By: piggu
      Thyroxine tablets may come in different colors.
    • It is possible for two patients who are taking the same dosage of thyroxine to have tablets that look completely different.
      By: Rob
      It is possible for two patients who are taking the same dosage of thyroxine to have tablets that look completely different.