Levothyroxine: side-effects, dosage, & benefits

What is Levothyroxine?

Levothyroxine is a professionally prescribed medication. It comes as a tablet or as a capsule. It additionally comes as in the form of liquid solution that is just given by a doctor through an injection.

Levothyroxine oral tablet is accessible as the brand-name drugs Levoxyl, Synthroid, and Unithroid. It’s additionally accessible as a non-specific medication or as a generic drug. Such medications are cheaper as compared to branded drugs. Now and again, they may not be accessible in each quality or form as the brand-name sedate.

Levothyroxine oral tablet might be utilized as a major aspect of a mixed treatment. This implies you may need to take it with different drugs.


thyroid profile- Levothyroxine dosage prescription is important for Seniors

Uses of Levothyroxine?

Levothyroxine oral tablet is utilized to treat hypothyroidism. This is a condition when your thyroid gland delivers too minimal thyroid hormone.

Levothyroxine likewise can be utilized to treat goiter, which is an augmented thyroid organ. This medication is also used in the treatment of certain types of thyroid cancer.

What are the benefits of using Levothyroxine?

Levothyroxine is the non-specific or generic name for thyroxine or T4. It is the most ordinarily recommended artificial replacement for the lost thyroid hormones naturally developed in the body, since it gives the steadiest level of the hormone in the body, as per the American Medical Association.” It is frequently sold as Synthroid or Levothroid. Doctors and experts say that it might take some time before the impacts of low thyroid hormone levels are seen. These impacts incorporate coronary illness, infertility, joint pain, etc. Levothyroxine, taken at the endorsed dose, turns around these issues. This medication is additionally used to diminish the measure of a goiter, a thyroid organ growth which may cause serious threats including cancer.

Side effects of using Levothyroxine?

The side effects of this medication are in plenty, many of these being very common. Levothyroxine oral tablet doesn’t cause laziness, yet it can cause different side effects.

Some of the common side effects are:



Thyroid gland- medication Levothyroxine


  • Unexpected weight loss
  • Increased hunger
  • Sweating without even doing exercise.
  • Irritation from heat or high temperatures.
  • Mood swings, nervousness, anxiety, and sleeplessness.
  • Tiredness, muscle pain or weak muscles, headache, etc.
  • Stomach pain, irregular menstrual cycles, hair loss, vomiting, and diarrhea.

If these effects are little or controllable, then they may leave inside a couple of days or two or three weeks. But if they’re more extreme or don’t leave, then it’s time for a medical check-up.

Uncommon or serious side-effects.

Summon your specialist right in the event that you have following side-effects.

  • Heart attack or Heart failure: if you are feeling a chest pain, shortness of breath and discomfort in your body then it’s most probably a heart attack and you should immediately call for an ambulance.
  • Irregular heartbeat (generally fast)

These were the side effects of taking Levothyroxine as a medication. But in many cases, Levothyroxine may react with other medicines and produce unwanted results. Levothyroxine oral tablet can react with different medicines, vitamins, or herbs you might take. A reaction is a point at which a substance changes the way a medication works. This can be destructive or keep the medication from proper functioning.

It is solely your doctor’s responsibility to avoid those reactions. Make sure that your specialist is aware of all your medicines, vitamins, or herbs that you’re taking.

Below are some of the interactions of Levothyroxine with generic medications:

  • Blood thinners, for example, warfarin. Taking these medications with levothyroxine may result in too thin blood and as a result, you may start bleeding excessively. Your specialist would be reducing the measurement of your blood thinner in case that you’re taking levothyroxine.
  • Antidepressants, for example, amitriptyline, maprotiline, and sertraline. The side effects of both the antidepressants and levothyroxine may occur together when you take these medications in parallel. This may put you in danger for sporadic heart rhythms (arrhythmias).
  • Ketamine. Taking this medication with levothyroxine may build your danger of hypertension and fast heart rate.
  • Sympathomimetic medications, for example, pseudoephedrine and albuterol. The impacts of both the sympathomimetic medications and levothyroxine may increase when you take these medications together. This may put you in danger of serious heart issues.

What is the dosage of Levothyroxine?

The doctor who will prescribe the medication will also prescribe the dosage. However, the prescription or dosage mainly depends upon your measurements, sedate frame, and other factors.

  • Your height, weight, and age.
  • Deal the condition with these doses
  • Other medical conditions or medications
  • how you respond to the main dosage

Depending on the brand names, the quantity of Levothyroxine that is available in the market, which comes in different quantity. Always take suggestions from your health care specialist before buying.

Dosage – Dose of hypothyroidism

Grown-up dose (ages 18– 49 years):

  • Your dose will be founded on a few variables, including your age, weight, thyroid hormone levels, different conditions you have, and different medicines you take. However, the average measurement is 1.6 mcg/kg/day.
  • Dosage is generally under 200 mcg/day.

Dosage for children (ages 0– 17 years):


Levothyroxine dosage (Thyroid profile)

  • The dose depends on weight and thyroid hormone levels of the child and you must consult a doctor for the dosage.
  • The normal beginning levothyroxine dose is 12.5– 25 mcg/day.
  • Your specialist will modify your medication each 1.5– 2 months, in view of your thyroid hormone levels.

The dose for goiter treatment

Grown-up dose (ages 18 years and above):

  • Your dose depends on your requirements and thyroid hormone levels. Your specialist will decide the correct measurements for you and change it in light of your present level of thyroid hormone.

Dosage for minors:

  • There are no measurement suggestions for individuals of this age group.

The dose of thyroid disease (cancer) treatment

Grown-up dose (ages 18 years and more):

  • Your dose depends on your necessities and thyroid hormone levels. Your specialist will decide the correct measurement for you and change it in view of your present level of thyroid hormone.

Dosage for children:

  • There are no dose proposals for individuals of this age. You must consult a doctor for the same

Dosage for pregnant women:


pregnant women- appropriate dosage with consultation of your health care specialist

  • You may require a higher dose of levothyroxine.

For individuals with heart diseases:

  • The suggested beginning dose is 12.5– 25 mcg/day.
  • The medication will balance your health after each 1.5-2 months


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