Our Products
About Us
Contact Us
Hello Sign In
Your Account
View My
Subscribe to Receive More Thyroid Information

Levoxyl Review

Levoxyl is a prescription medication designed to treat hypothyroidism. How does it work and what makes it different from other thyroid medication?
Pin it

levoxyl tabThere are different medications and supplements that are recommended for hypothyroidism, and one of them is Levoxyl. But, what exactly is this drug? How does it work and what are the things that you need to know before taking it?

A Quick Look At Levoxyl

Levoxyl is a drug prescribed by doctors for patients suffering from hypothyroidism. Its main component is levothyroxine, which replaces the natural thyroid hormone thyromine.

Hypothyroidism, or low thyroid production is a condition that occurs naturally to a lot of people. This means that their thyroids cannot produce enough or can no longer produce thyroid hormones, which are essential in maintaining the body’s wellbeing.

Aside from naturally occurring hypothyroidism, some individuals develop the condition due to specific causes, which include:


Congenital abnormalities

Hashimoto’s thyroiditis

Iodine deficiency

Radioactive iodine treatment


Surgical removal of the thyroid gland

Because thyroid hormones are important for proper mental and physical activity, it is very important to replace the thyroid hormones which the thyroid gland cannot produce, and this is done by taking prescription drugs such as Levoxyl or natural thyroid supplements such as Thyax.

Levoxyl Ingredients

synthetic t4 hormoneLevoxyl’s main ingredient is levothyroxine or synthetic T4 hormone. This is the chemical equivalent of the naturally occurring T4 hormone produced by the thyroid gland.

Aside from the active ingredient, Levoxyl contains binders. Binders are necessary ingredients in plenty of medications, but they do not really affect the effectiveness of the drug. These include croscarmellose sodium, magnesium stearate and microcrystalline cellulose. Color additives are also used for some of the tablets.

How Is Levoxyl Taken?

The dosage for Levoxyl is determined by one’s doctor, and is dependent on the patient’s age, weight, severity of the condition, existing medical conditions and intake of other medications and drugs.

The average daily dose for full replacement is approximately 1.7 micrograms per kilogram body weight. Older patients may require less dosage while younger patients and children may require more. Pregnant women, too, may require more than the average dose.

Once the doctor determines a specific dosage, the patient can eventually start the treatment. The treatment usually involves the intake of Levoxyl once a day, each and every day. The recommended time to take the drug is first thing in the morning, right before breakfast. This is done because specific types of food and liquids interfere with the body’s intake of levothyroxine.

The medication should be taken with a full glass of water – unless otherwise directed by one’s doctor.  It should be taken at the same time each day to produce the best effects.

When taking Levoxyl, patients should take the tablet whole and should not crush, split or chew it. In the case of infants and children who may have problems swallowing whole tablets, parents can crush the tablet and mix it with one or two teaspoons of water. The preparation should be given immediately and should not be made in advance.

Levoxyl comes in different dosages, with colors indicating the dosage and strength of the tablet. The tablets have doses ranging from 25 to 200 micrograms and come in the colors white, blue, green yellow, peach, pink and purple.

Side Effects Of The Levoxyl

Like any other kind of prescription medication, Levoxyl can cause side effects. There are only two common side effects that were noted among many users and these are difficulty in getting pregnant (for women) and hair loss.

Aside from the two common side effects, other Levoxyl side effects are quite rare with majority of the users of the product. While the side effects are not really common occurrences among users – there are still rare cases when they can manifest.

Less Severe Symptoms

  • irritabilityWeight loss
  • Nervousness and anxiety
  • Irritability
  • Muscle weakness
  • Low Energy
  • Sweating and heat intolerance
  • Increased hunger
  • Diarrhea
  • Stomach cramps
  • Nausea and vomiting
  • Irregular menstruation

Severe Symptoms

  • anginaArrhythmia or abnormal heart beat
  • Angina
  • Heart attack
  • Heart failure
  • Hives and swelling of the face, throat and mouth area
  • Mood swings
  • Palpitations
  • Seizures
When these rare symptoms do occur, notify the doctor right away.

weight lossA lot of people use Levoxyl because they think that it can help them lose weight. While Levoxyl does increase thyroid hormone production, which in turn speeds up the body’s metabolism, the medication is not intended for weight loss. In fact, using Levoxyl in the absence of thyroid problems can even cause adverse reactions and side effects.

Some Important Things To Remember

  • Some Levoxyl tablets may be difficult to swallow and can cause choking or gagging. This is why it should be taken with a full glass of water each and every time.
  • Levoxyl should be taken exactly as prescribed. A slight increase in the dosage can already cause over-replacement which can lead to a host of side-effects. A slight decrease in the recommended dosage can also cause under-replacement and may not cause a reoccurrence of the hypothyroidism symptoms.
  • The intake of Levoxyl may affect one’s blood sugar levels. Diabetes patients should let their doctor know about their condition before starting treatment.
  • Some foods such as dietary fiber, soybean flour and walnuts can decrease the body’s ability to absorb Levoxyl. Patients with diets that include these foods should also check with their doctors.
  • Lab tests should be done regularly while taking Levoxyl. These tests are done to monitor the condition and check for possible side effects.
  • Some drugs may counteract with Levoxyl and may illicit adverse reactions or effects. Make sure that you let your doctor know about the drugs and supplements that you take regularly.
  • Some food and drugs may affect the body’s ability to absorb Levoxyl, which is why it is important to take the medication at least an hour before breakfast on an empty stomach. Medications that counteract with Levoxyl may only be taken four hours after taking the drug.

All in all, Levoxyl is quite similar to other levothyroxine prescription medications – but still, you should never switch from one brand to another without the recommendation of your doctor.


Next Article: Levoxyl Side Effects - Read this Before Taking this Drug!


Thyax is a natural thyroid remedy that can help stimulate thyroid hormone levels naturally. Boost low levels of T3 and T4 to restore your thyroid function back to normal.