SP-Laboratories LIOTHYRONINE (T3)



Package: 100 tabs (50mcg/tab)

Active Substance: Liothyronine Sodium

Product Name: Thyroid, Citomed, T3


Liothyronine Sodium, commonly known as T3, is a synthetic thyroid hormone used to treat various thyroid-related disorders. Manufactured by SP-Laboratories, it plays a crucial role in regulating metabolism, energy production, and overall well-being. In this article, we will delve into the general description, indications, contraindications, uses in bodybuilding and sports, medical actions, combination with other drugs, recommended dosage, and potential side effects of Liothyronine Sodium.

General Description:

Liothyronine Sodium is a synthetic form of the thyroid hormone triiodothyronine (T3). The thyroid gland naturally produces T3, which is essential for maintaining metabolic processes, body temperature, and energy levels. SP-Laboratories formulates Liothyronine Sodium to mimic the effects of natural T3, making it a valuable pharmaceutical product.


Liothyronine Sodium is primarily indicated for the treatment of hypothyroidism, a condition where the thyroid gland fails to produce enough thyroid hormones. It is also prescribed to individuals with goiter (enlarged thyroid gland) and those undergoing thyroid cancer treatment. Additionally, some doctors use it in cases of depression that are unresponsive to traditional antidepressant therapy.


While Liothyronine Sodium can be highly beneficial, it is not suitable for everyone. Individuals with a history of hypersensitivity to the drug or any of its components should avoid its use. Patients with hyperthyroidism, heart diseases, or adrenal gland problems should also steer clear of Liothyronine Sodium, as it can exacerbate these conditions. Pregnant and breastfeeding women should consult their healthcare providers before using the medication.

Uses in Bodybuilding and Sports:

Liothyronine Sodium has gained popularity in the bodybuilding and sports communities due to its potential to accelerate weight loss and increase energy levels. Athletes and bodybuilders often use it as a cutting agent to shed excess body fat while preserving lean muscle mass. By increasing the body’s metabolic rate, T3 helps individuals burn calories more efficiently.

However, it’s crucial to emphasize that using Liothyronine Sodium for non-medical purposes carries risks and should only be done under the supervision of a healthcare professional. Misuse or overuse of this drug can lead to serious health issues and disrupt the body’s hormonal balance.

Medical Action:

Liothyronine Sodium functions by mimicking the action of the thyroid hormone T3 in the body. It binds to thyroid receptors, increasing the metabolic rate, promoting fat breakdown, and enhancing overall energy production. This action is vital in regulating body temperature, maintaining heart rate, and ensuring proper functioning of various organs.

Combinating with Other Drugs:

Combining Liothyronine Sodium with other drugs, especially those affecting the thyroid or metabolism, should be done cautiously and under medical supervision. It’s essential to avoid interactions that could lead to adverse effects or compromised efficacy of either medication. Always consult with a healthcare provider before using Liothyronine Sodium in combination with other drugs.


The appropriate dosage of Liothyronine Sodium varies depending on the individual’s condition and needs. Generally, for hypothyroidism treatment, the initial dose is typically 25-50 micrograms per day, which may be adjusted based on the patient’s response. Bodybuilders and athletes who use T3 for cutting cycles often start with 25 micrograms per day and gradually increase it while closely monitoring for side effects.

Side Effects:

Liothyronine Sodium, like any medication, can lead to side effects. Common side effects include increased heart rate, palpitations, anxiety, nervousness, excessive sweating, and weight loss. These side effects are usually mild and subside with dose adjustments.

However, misuse or excessive use of T3 can result in severe side effects such as cardiac arrhythmias, heart attacks, and bone loss. It can also lead to a condition known as thyrotoxicosis, characterized by extreme fatigue, muscle weakness, and psychological symptoms.


Liothyronine Sodium, manufactured by SP-Laboratories, is a potent thyroid hormone with various medical applications and a growing presence in bodybuilding and sports. While it offers potential benefits, its use should always be guided by a healthcare professional to minimize risks and ensure safe and effective treatment.