Levothyroxine Side Effects

Before we discuss Levothyroxine side effects you need to know what the drug is manufactured for. Technically, the drug is designed to replace a hormone in the body that is naturally produced by your thyroid gland. Your body needs this hormone to keep your metabolism in check. Doctors prescribe the drug when the thyroid gland isn’t producing as much of the hormone as the body needs. As a result, your body eventually experiences drastic drops in energy levels throughout the day.


This condition is also known as hypothyroidism. The drug is also used to counteract a range of other thyroid related medical issues like thyroid nodules and goiters. Of course, like in the case with most types of medication, Levothyroxine also comes with its fair share of side effects. The drug is relatively harmless but some patients have ended up with nasty side effects after ingesting the drug. The following are some of them –


Allergic Reactions

Allergic reactions to the drug are rare. However people who are unfortunate enough to suffer from them usually break out in hives or rashes after taking the drug. Some parts of their body might start to swell as well especially the skin around the mouth and neck area. Other signs include troubled breathing or wheezing. 

Extreme cases include dizziness, itchiness and sudden hoarseness. If you or anyone you know exhibits these signs seek medical attention immediately.


Gastrointestinal Effects

Medication overdose rarely bores well for those at the receiving end of it. A Levothyroxine overdose is no better. For example, a person may experience extreme weightless despite having a hearty appetite. A patient who happens to overdose might also keep throwing up at intervals or experience painful stomach cramps.


Neurological Effects

The drug has been known to cause hyperactivity and muscular weakness in some cases. Don’t be surprised if you start feeling irritable and cranky after the drug has taken effect.

Medical experts also advise against taking the drug during a heart attack and for good reason. An overdose might cause the heart to palpitate at an alarming rate or result in cardiac arrest. Extreme cases have also recorded heart failure. You might also start to sweat profusely or feel feverish.

Patients might also feel their bones becoming more brittle especially if they have been taking the drug for a long time. This is also why such patients are prone to fractures.

Doctors also advise against taking the drug with some other forms of medication especially those that are manufactured for weight loss. Such combinations can prove to be fatal. In fact, taking additional medication along with the drug can also prevent the body from absorbing it thereby rendering it useless. Make sure that you inform your doctor about any conditions you might have like asthma, heart problems, high cholesterol, diabetes or other related issues before you get on the drug.  Also make sure that you keep the discussed symptoms in mind in case you do happen to suffer from any Levothyroxine side effects.

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