Europe — EMA
Novofen (Tamoxifen)
GNH USA supplies Novofen (Tamoxifen), a selective estrogen receptor modulator for estrogen receptor‑positive breast cancer treatment and recurrence
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What is Tamoxifen?
Tamoxifen, the active ingredient in Novofen, is a selective estrogen receptor modulator (SERM) presented as an oral tablet for oral use. It is used to treat estrogen receptor‑positive breast cancer in women, both as adjuvant therapy and for recurrence prevention.
GNH USA supplies Novofen as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, oncology centres, pharmacies and clinics worldwide.
What is Tamoxifen used for?
Novofen (tamoxifen) acts on estrogen‑driven breast cancer pathways and is employed in several clinical settings.
- Estrogen receptor‑positive breast cancer: used as adjuvant therapy to lower the risk of disease recurrence after surgery. - Breast cancer recurrence prevention: administered to reduce the chance of cancer returning in patients who have completed primary treatment. - High‑risk women (e.g., strong family history or genetic predisposition): given prophylactically to decrease the incidence of developing breast cancer.
What are the side effects of Tamoxifen?
Common side effects are generally mild to moderate and may affect daily comfort.
Common Side Effects: - Hot flashes: sudden feeling of warmth and sweating. - Nausea: mild to moderate stomach upset. - Menstrual irregularities: changes in cycle length or flow. - Fatigue: persistent tiredness.
Serious or Rare Side Effects: - Deep vein thrombosis or pulmonary embolism: blood clots in veins or lungs. - Endometrial cancer: abnormal growth of the uterine lining. - Severe liver injury: jaundice, elevated enzymes. - Stroke or cerebrovascular events: neurological deficits due to impaired blood flow.
What precautions apply to Tamoxifen?
Before initiating therapy, several safety considerations should be addressed.
- Pregnancy risk: avoid use in pregnant women; tamoxifen is Category D. - Thromboembolic history: assess for prior clotting disorders. - Uterine health: monitor for abnormal uterine bleeding. - Liver function: evaluate baseline hepatic enzymes. - Store at room temperature: keep in the original container, protect from moisture and heat.
What does Tamoxifen interact with?
Tamoxifen may interact with other medicines, requiring careful management.
Major Interactions (Avoid): - Strong CYP2D6 inhibitors (e.g., paroxetine, fluoxetine): may reduce active metabolite formation. - Anticoagulants (e.g., warfarin): increased risk of bleeding.
Moderate Interactions (Monitor Closely): - CYP3A4 inducers (e.g., rifampin): may lower tamoxifen exposure. - Hormone replacement therapy or estrogen‑containing contraceptives: may counteract anti‑estrogen effect. - Certain SSRIs with moderate CYP2D6 inhibition (e.g., sertraline): monitor therapeutic response.



