Package: 50 tabs (1mg/tab)

Active Substance: Anastrozole

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Anastrozole from British Dragon Pharmaceuticals is an oral medication primarily indicated for the treatment of breast cancer in postmenopausal women. It works by lowering estrogen levels in the body, which can help slow the growth of certain types of breast tumors that need estrogen to grow. Besides its primary use in cancer treatment, Anastrozole is also used by bodybuilders and athletes during muscle gaining steroid cycles. The drug helps to mitigate the estrogenic side effects that often accompany the use of anabolic steroids, such as gynecomastia and water retention.


Anastrozole should not be used in certain situations due to potential risks and adverse effects:

  1. Pregnancy and Breastfeeding: Anastrozole is contraindicated in pregnant and breastfeeding women, as it can harm the fetus or infant.
  2. Premenopausal Women: This drug is not recommended for women who have not yet gone through menopause, as its safety and effectiveness in this population have not been established.
  3. Severe Liver or Kidney Disease: Individuals with severe liver or kidney disease should avoid using Anastrozole, as it can exacerbate these conditions.
  4. Allergic Reactions: Anyone with a known allergy to Anastrozole or any of its components should not take this medication.


Anastrozole is administered orally in the form of tablets. The typical dosage for treating breast cancer is 1 mg once daily. For bodybuilders and athletes using Anastrozole during a muscle gaining steroid cycle, the dosage may vary depending on individual needs and the type of steroids being used. It is often recommended to start with a lower dose, such as 0.5 mg to 1 mg every other day, and adjust based on how well the drug is controlling estrogenic side effects. It is important to follow the prescribed dosage and not to exceed the recommended amount to avoid potential side effects.

Medical Action

Anastrozole belongs to a class of drugs known as aromatase inhibitors. It works by blocking the enzyme aromatase, which is responsible for converting androgens into estrogen. By inhibiting this conversion, Anastrozole effectively lowers the levels of estrogen in the body. This reduction in estrogen is beneficial in treating estrogen receptor-positive breast cancer, as it can slow or stop the growth of cancer cells that rely on estrogen.

In the context of bodybuilding, Anastrozole’s ability to reduce estrogen levels helps to counteract the side effects associated with anabolic steroid use. Many anabolic steroids can convert to estrogen in the body, leading to unwanted effects such as gynecomastia (development of breast tissue in men), water retention, and increased fat deposition. By using Anastrozole, athletes can maintain lower estrogen levels, which helps to prevent these side effects and achieve a leaner, more defined physique.


When using Anastrozole, it is important to take several precautions to ensure safety and effectiveness:

  1. Bone Health: Anastrozole can lead to decreased bone mineral density, increasing the risk of osteoporosis and fractures. Regular bone density tests and taking calcium and vitamin D supplements may be necessary.
  2. Liver Function: Regular monitoring of liver function is recommended, as Anastrozole can affect liver enzymes.
  3. Cholesterol Levels: Anastrozole can impact cholesterol levels, so periodic lipid profile tests may be required.
  4. Menopausal Symptoms: Women using Anastrozole may experience menopausal symptoms such as hot flashes, vaginal dryness, and mood changes.
  5. Regular Check-ups: Regular medical check-ups are important to monitor the drug’s effects and to adjust the dosage if necessary.

Side Effects

Anastrozole can cause a range of side effects, which can vary in severity:

  1. Common Side Effects: These include hot flashes, joint pain, weakness, sore throat, high blood pressure, and depression.
  2. Serious Side Effects: These include severe allergic reactions, liver problems, stroke, and heart disease.
  3. Bone Health Issues: Long-term use can lead to osteoporosis and an increased risk of fractures.
  4. Mood Changes: Some users may experience mood swings, anxiety, or depression.
  5. Gastrointestinal Issues: Nausea, vomiting, and diarrhea can occur.


In the event of an overdose, immediate medical attention is required. Symptoms of overdose may include severe dizziness, fainting, and liver dysfunction. There is no specific antidote for Anastrozole overdose, and treatment is supportive and symptomatic. Activated charcoal may be administered to help absorb the drug in cases of recent ingestion.


Anastrozole from British Dragon Pharmaceuticals is a potent aromatase inhibitor that effectively lowers estrogen levels in the body. While primarily used to treat breast cancer in postmenopausal women, it has also found a place in the bodybuilding community for managing estrogenic side effects during muscle gaining steroid cycles. By preventing the conversion of androgens to estrogen, Anastrozole helps to reduce the risk of gynecomastia, water retention, and other unwanted effects, allowing athletes to achieve a leaner and more defined physique.

Using Anastrozole requires careful monitoring and adherence to recommended dosages to avoid potential side effects. Regular medical check-ups, bone density tests, and liver function tests are important to ensure the drug’s safety and effectiveness. Despite its benefits, users should be aware of the potential risks and side effects associated with Anastrozole and take necessary precautions to minimize them.

In summary, Anastrozole is a valuable tool for both medical and athletic purposes. Its ability to control estrogen levels makes it an essential component of breast cancer treatment and a useful adjunct during anabolic steroid cycles. However, its use should be approached with caution, and individuals should consult with healthcare professionals to determine the appropriate dosage and monitoring regimen.


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