T-3 25 mcg
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T-3 25 mcg


T-3 25 mcg is commonly used in patients who are suffering from hypothyroidism or underactive thyroid. The active ingredient of this medicine is Liothyronine.

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A tablet that is commonly used in patients who are suffering from hypothyroidism (underactive thyroid). It also helps to relieve the symptoms caused by a deficiency of thyroid hormone. Doctors may also prescribe this medication to treat other diseases not listed in this article. While the active ingredient is Liothyronine, it also contains other inactive ingredients such as corn starch, magnesium stearate, mannitol, calcium sulfate dihydrate, and others. T-3 25 mcg belongs to the class of medications called thyroid agents. This medication works by supplying the thyroid hormones normally produced by the body, which helps treat the condition and relieve the symptoms.

The manufacturer of T-3 25 mcg is Evolve Biolabs.


Commonly, the recommended dose per day is one tablet or as directed by your healthcare professional. Take the pill whole by mouth with or without food. Use a glass full of water to administer the tablet and avoid other drinks such as alcohol because it may increase your risk of adverse effects. You can administer this medication with milk or light food if nausea or stomach upset occurs. Use T-3 25 mcg regularly each day and at the same time, to get the most benefit from this medication.

It is not recommended to use this drug more often than is prescribed by the doctor because your condition will not improve faster. However, in certain cases, your doctor may gradually increase the dosage or even change the medication if you do not notice the desired result.

In case you are using the liquid form of this medication, it is recommended to measure the dose with a special spoon or cup. Do not use a household spoon because you may get the wrong does, which may also increase your risk of adverse effects. If you see no improvements in your condition in the first month of treatment, discuss it with your healthcare provider.


The dosages vary among patients because it depends on other medicines you may use, the severity of the health condition, age, weight, and response to therapy. Thereby, physicians prescribe different dosages for their patients. Avoid using this medicine if you are not sure what dosage is better for you.

  • T-3 25 mcg

Missed Dose

It is not advised to miss a dose because symptoms may return. Therefore, your health condition may become difficult to treat. In any case, if you miss one, doctors advise taking the dose as soon as you remember. If it is too close to the time for the next dose, simply skip the missed dose. It is not allowed to take a double dose the next time trying to make up because it may increase your risk of adverse effects.


Rarely, if you are administering an increased amount of tablets without the doctor’s recommendation, you may notice an overdose. Stop taking this medicine and get medical help right away if you experience any of the following symptoms. Examples include slow or irregular heartbeat, severe dizziness, passing out, breathing problems, and others. If you have any questions, ask your doctor.

Side Effects of T-3 25 mcg

Liothyronine like other medicines may give you certain side effects. Any of the following side effects may disappear in case your body adjusts to this medicine. Overdose and allergy are two factors that can provoke side effects. There are three types of adverse effects: mild, moderate, and severe.

Mild Side Effects

Most patients usually ignore this category of side effects. Dehydration is one factor that can cause mild side effects. Therefore, to diminish this problem, you should drink plenty of water during treatment. Check some examples below:

Moderate Side Effects

This category of side effects usually is not dangerous for the patients and they can continue safely the treatment. Moreover, your doctor may be able to help you to prevent or avoid side effects. For example:

  • Diarrhea
  • Sensitivity to heat
  • Increased appetite
  • Skin rash

Severe Side Effects

This category of adverse effects may occur in rare cases due to an increased dose of T-3 25 mcg. Thus, you should consult a doctor immediately if you notice any of the following side effects. Check below some examples:

  • Weight loss
  • Irregular menstrual cycles
  • Muscle weakness
  • Trembling
  • Sleeping problems (insomnia)
  • Breathlessness
  • Nervousness
  • Arrhythmia (irregular heartbeats)

This document does not contain a complete list of side effects. In case you experience any of the adverse effects listed above or any other effects, contact your doctor right away.

Drug Interaction

T-3 25 mcg may interact with some substances and medications. It means that other drugs may decrease the effectiveness of the medicine or even increase the risk of adverse effects. Share a list of products that you are using with your doctor before taking Liothyronine. Examples include herbal products, vitamins, prescription medications, nonprescription medications, supplements, and others. Check below some examples:

  • Warfarin
  • Multivitamins with minerals
  • Dextroamphetamine
  • Amphetamine
  • Metoprolol
  • Lisdexamfetamine
  • Amiodarone
  • Aluminum carbonate and hydroxide
  • Calcium supplements
  • Cholestyramine
  • Conjugated estrogens
  • Carbamazepine
  • Dopamine
  • Dicumarol
  • Digoxin
  • Digitoxin
  • Estrone
  • Epinephrine
  • Esomeprazole
  • Fluoxetine
  • Glyburide
  • Insulin
  • Magnesium supplements
  • Methyltestosterone
  • Metformin
  • Nortriptyline
  • Norepinephrine
  • Omeprazole
  • Phenytoin
  • Primidone
  • Rifampin
  • Rifapentine
  • Rifabutin
  • Quinestrol
  • Theophylline

This document does not contain a full list of drug interactions. That’s why it is recommended to consult a doctor before using Liothyronine. In addition, do not start, stop, or change the dosages without the doctor’s approval because you may experience unpleasant results.


Tell your physician if you have an allergy to the ingredients of the drug or if you have any other allergies. Moreover, you should share your medical history with your physician before using this drug. Check some examples below:

  • Water diabetes (such as diabetes insipidus)
  • Diabetes
  • High blood pressure (hypertension)
  • Heart disease (such as recent myocardial infarction, heart failure, angina, and others)
  • Decreased adrenal gland function
  • Obesity
  • Cardiovascular disease
  • Liver disease (such as hepatitis B, hepatitis C, cirrhosis, and others)
  • Thyrotoxicosis

This drug may be used during pregnancy with a doctor’s recommendation only. Otherwise, it may harm you and your unborn baby. In addition, it is advised to talk with a doctor if you are a breastfeeding mother because Liothyronine passes into breast milk.

Additional information

Active Ingredient



Evolve Biolabs


10 tabs/blister




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