SP-Laboratories TAMOXIFEN



Package: 100 tabs (10mg/tab)

Active Substance: Tamoxifen Citrate

Product Name: Nolvadex, Tamoxifen, Tamoximed


Tamoxifen Citrate, commonly known as Tamoxifen, is a pharmaceutical compound manufactured by SP-Laboratories. It is primarily used for its anti-estrogenic properties and has gained popularity in the field of bodybuilding and sports due to its unique effects on hormonal balance. In this article, we will delve into the general description, indications, contraindications, uses in bodybuilding and sports, medical action, combination with other drugs, dosage, and potential side effects of Tamoxifen Citrate.

General Description:

Tamoxifen Citrate is a selective estrogen receptor modulator (SERM) that was originally developed for the treatment of breast cancer. It is available in both oral and injectable forms, with the oral variant being more commonly used. Tamoxifen works by binding to estrogen receptors in the body, thereby preventing estrogen from exerting its effects.


  1. Breast Cancer: Tamoxifen is primarily indicated for the treatment and prevention of breast cancer. It is particularly effective in estrogen receptor-positive breast cancer cases.
  2. Post-Cycle Therapy (PCT): In bodybuilding and sports, Tamoxifen is often used as part of post-cycle therapy to help restore natural testosterone production following the use of anabolic steroids.


Despite its benefits, Tamoxifen is not suitable for everyone. It is contraindicated in the following cases:

  1. Pregnancy: Tamoxifen can harm an unborn baby and should not be used during pregnancy.
  2. History of Blood Clots: Individuals with a history of blood clots or deep vein thrombosis should avoid Tamoxifen as it can increase the risk of clot formation.
  3. Allergies: Those who are allergic to Tamoxifen or its components should not use this drug.
  4. Pre-Existing Liver Disease: Tamoxifen may affect liver function, making it unsuitable for individuals with liver diseases.

Uses in Bodybuilding and Sports:

Tamoxifen Citrate has found a place in the world of bodybuilding and sports due to its ability to manage estrogen-related side effects from anabolic steroid use. Athletes and bodybuilders use it for the following purposes:

  1. Estrogen Control: Tamoxifen helps control estrogen levels, preventing the development of gynecomastia (male breast enlargement) and water retention associated with some steroids.
  2. PCT (Post-Cycle Therapy): After completing a steroid cycle, athletes use Tamoxifen to kickstart their natural testosterone production, ensuring a smoother transition off steroids.

Medical Action:

Tamoxifen exerts its medical action by binding to estrogen receptors, effectively blocking estrogen from attaching to these receptors. This action has several effects:

  1. Estrogen Suppression: Tamoxifen reduces the levels of circulating estrogen in the body, which is crucial in treating estrogen receptor-positive breast cancer.
  2. Testosterone Stimulation: In the context of PCT, Tamoxifen stimulates the production of luteinizing hormone (LH) and follicle-stimulating hormone (FSH), leading to an increase in testosterone production.

Combining with Other Drugs:

In some cases, Tamoxifen may be used in combination with other drugs for enhanced results:

  1. Aromatase Inhibitors (AI): In bodybuilding, aromatase inhibitors like Anastrozole or Letrozole are sometimes used in conjunction with Tamoxifen to manage estrogen levels more effectively.
  2. Selective Androgen Receptor Modulators (SARMs): Some athletes combine Tamoxifen with SARMs to optimize their results while minimizing the risk of estrogenic side effects.


The dosage of Tamoxifen can vary depending on the purpose of use:

  1. Breast Cancer Treatment: Typical dosages range from 20 to 40 mg per day, administered in divided doses.
  2. PCT (Post-Cycle Therapy): For PCT purposes, a common starting dose is 40 mg per day, gradually decreasing over several weeks.

It’s crucial to consult with a healthcare professional before determining the appropriate dosage, as individual requirements may differ.

Side Effects:

While Tamoxifen is generally well-tolerated, it can have side effects, including:

  1. Hot Flashes: Some individuals may experience hot flashes as a common side effect.
  2. Nausea and Vomiting: Gastrointestinal issues, including nausea and vomiting, can occur but are usually mild.
  3. Increased Risk of Blood Clots: As mentioned earlier, Tamoxifen can increase the risk of blood clots.
  4. Mood Changes: Some users may report mood swings or changes in mood.


Tamoxifen Citrate, manufactured by SP-Laboratories, is a versatile drug with a wide range of applications. From its primary use in breast cancer treatment to its essential role in bodybuilding and sports, it has proven its worth. However, it is crucial to use Tamoxifen under the guidance of a healthcare professional to ensure its safe and effective use while minimizing potential side effects. Always prioritize your health and well-being when considering its use in any context.