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Thyroid Medication Side Effects
Thyroid Medication Side Effects

Thyroid Medication Side Effects

It is essential to learn about the side effects each time you use any kind of medication for thyroid problems. Most of the time, people are prescribed the wrong dosage or medication type and this could lead to serious side effects related to thyroid medications.


Be certain to note all adverse reactions since the typical thyroid medications along with their side effects will be discussed below.


Also, take note that supplements or medications should be used in conjunction with proper diet hypothyroidism or else the treatment will not be as effective eventually.


T4 Only Medication Side Effects 

Basically, T4 only thyroid medications are accountable for a great number of side effects compared to other medication forms. Also, it is evident in poor patients who have been relying on these thyroid medications for many years.


T4 only medications often tend to cause an accumulation of T4 in the body. Consequently, this dictates your body to halt producing too high levels of thyroid hormone. This slows down your thyroid further and makes your hypothyroidism even worse.

The best signs that your thyroid condition is worsening is when the symptoms gets too intense. With all these, the common T4 only drugs side effects can be one of the many symptoms of hypothyroidism.

T3 Only Medication Side Effects

T3 refers to the active thyroid hormone that is utilized by the cells without liver involvement. Due to thus, thyroid drugs side effects because of T3 only medications are very likely.

If you consume high amounts of T3, your body cells will take it up and shift you from being hypothyroid to being hyperthyroid. This can boost your metabolism rate and increase your body’s core temperature over the normal 37 degrees Celsius or 98.6 degrees Fahrenheit.

This also makes your body more vulnerable to the harmful adrenaline effects. This could result to a number of bothersome side effects of thyroid medications:


  • Anxiety
  • Difficulty in concentrating
  • Irritability
  • Nervousness
  • Restlessness
  • Depression
  • Emotional and social behavior changes


  • Elevated body temperature
  • Insomnia
  • Headache
  • Increased heart rate
  • Elevated blood pressure
  • Fatigue
  • Chest pain
  • Tremors
  • Flushing
  • Decreased Libido
  • Hair loss
  • Sensitivity to sound and light

These side effects must be taken seriously although these will subside when the thyroid hormones undergo normalization.

With this, you can have more reasons to take care of your blood sugar, stress levels and other problems that can make your adrenaline high.

Combined T3 and T4 Medication Side Effects

Combined T3 and T4 drugs like Armour Thyroid can also result to a number of side effects.

Since these meds consists of mainly T4, in case your liver cannot transform the T4 in its active form T3, it can make you more hypothyroid. As a result, the hypothyroid symptoms can get even worse.

If your liver is quite active in T4 conversion, you can consume too much and manufacture high levels of T3 hormone. This will lead to various symptoms related to increased adrenaline sensitivity.


Side Effects of Iodine Supplementation

There are a lot of issues concerning iodine deficiency and the utilization of iodine supplements.

These days, most goiter cases are connected to elevated estrogen which has the same effect on not letting the thyroid gland discharge its hormones.


The truth is there are those that recommend excessive iodine levels without regard to its negative side effects and this could lead to high chances of developing degenerative diseases.

So, each time you take medications whether intended for other diseases, it is important to monitor the response of your body. If any side effects appear, work things out with your health provider to tune up dosage or find another medication more suited for you.

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