Description
Estrolet Tablets 2.5mg (1 Box = 10 Tablets)
Product Overview
Estrolet Tablets 2.5mg is a prescription oral medication containing the active ingredient Letrozole. Manufactured by Nabiqasim Pharma in Pakistan, this potent, non-steroidal aromatase inhibitor is primarily designed for the treatment of hormone receptor-positive breast cancer in postmenopausal women. Estrolet works by significantly reducing estrogen production in the body, thereby hindering the growth of hormone-sensitive breast cancer cells. Administered as a simple, once-daily oral tablet, Estrolet offers a convenient and effective treatment option for various stages of breast cancer, including early, advanced, and metastatic disease. Additionally, Estrolet is commonly prescribed off-label by fertility specialists for ovulation induction in women with Polycystic Ovary Syndrome (PCOS) or anovulatory infertility. Each box contains 10 tablets (2.5mg each) .
This advanced hormonal therapy delivers effective breast cancer treatment and fertility support:
Effective Cancer Treatment: Indicated for adjuvant treatment of early breast cancer, extended adjuvant treatment after tamoxifen therapy, and first/second-line treatment of advanced breast cancer in postmenopausal women.
Hormone Receptor Positive Action: Specifically targets hormone receptor-positive breast cancers, which rely on estrogen for growth.
Aromatase Inhibition: As a nonsteroidal aromatase inhibitor, it effectively blocks estrogen synthesis, leading to a significant reduction in plasma estrogen levels.
Fertility Support: Used off-label for ovulation induction in women with PCOS or irregular ovulation, offering a preferred alternative to clomiphene.
Once-Daily Dosing: Simple, once-daily oral administration for convenient and consistent treatment.
Prescription Medication: Requires a prescription from a qualified healthcare professional.
What are the Primary Uses and Key Features of Estrolet Tablet?
Estrolet Tablet serves as a specialized therapeutic solution for managing hormone receptor-positive breast cancer in postmenopausal women and supporting fertility in women with ovulatory disorders.
Core Uses of This Medication
Adjuvant Treatment of Early Breast Cancer: For postmenopausal women with hormone receptor-positive invasive early breast cancer, to reduce the risk of recurrence.
Extended Adjuvant Treatment: For postmenopausal women with early breast cancer who have completed approximately 5 years of prior standard adjuvant tamoxifen therapy.
First-Line Treatment of Advanced Breast Cancer: For postmenopausal women with hormone-dependent advanced (metastatic) breast cancer.
Second-Line Treatment: For advanced breast cancer after relapse or disease progression in postmenopausal women previously treated with anti-estrogens.
Ovulation Induction (Off-Label): For women with Polycystic Ovary Syndrome (PCOS), irregular or absent ovulation, or anovulatory infertility, to stimulate natural egg release.
Standout Product Features
| Feature | Description |
|---|---|
| Active Ingredient: Letrozole | A potent, nonsteroidal aromatase inhibitor that blocks estrogen synthesis. |
| Strength: 2.5mg | Each film-coated tablet contains 2.5mg of letrozole. |
| Manufacturer: Nabiqasim Pharma | Manufactured by a reputable Pakistani pharmaceutical company. |
| Oral Administration | Convenient once-daily tablet that can be taken with or without food. |
| Dual Clinical Applications | Used for breast cancer treatment and ovulation induction in infertility. |
| Prescription Required | Available only with a prescription from a qualified healthcare professional. |
| Blister Packaging | Each box contains 10 tablets. |
What Key Ingredients are in Estrolet Tablet and How Does It Work?
Composition
| Component | Description |
|---|---|
| Letrozole | Each film-coated tablet contains 2.5 mg of letrozole. |
| Other Ingredients | Contains pharmaceutical excipients including film-coating agents and tablet binders. |
Mechanism of Action
Letrozole is a nonsteroidal aromatase inhibitor. It works by binding to the heme group of the aromatase enzyme, a cytochrome P450 enzyme that catalyzes the conversion of androgens to estrogens (specifically, androstenedione to estrone and testosterone to estradiol). By inhibiting this enzyme, letrozole significantly reduces plasma estrogen levels. This estrogen deprivation inhibits the growth of hormone-sensitive breast cancer cells, as approximately 30% of human breast cancers are sensitive to this mechanism. In fertility treatment, the reduction in estrogen levels triggers the brain to produce more follicle-stimulating hormone (FSH), which stimulates ovarian follicle development and ovulation.
Key Benefits
Effectively treats hormone receptor-positive breast cancer.
Reduces the risk of breast cancer recurrence.
Supports ovulation induction in women with PCOS or anovulatory infertility.
Convenient once-daily oral administration.
Can be taken with or without food.
How Should I Use Estrolet Tablet Correctly?
Estrolet Tablet must be taken orally as prescribed by a healthcare professional. Do not self-adjust the dose. The dosage and duration depend entirely on the condition being treated.
Dosage and Administration
| Parameter | Breast Cancer Treatment | Ovulation Induction (Fertility) |
|---|---|---|
| Recommended Dose | 2.5 mg once daily. | As directed by gynaecologist, typically on specific cycle days. |
| Adjuvant/Extended Adjuvant | Continue for 5 years or until disease relapse/recurrence, whichever comes first. | Typically taken on cycle days 3-7 or 5-9 with ultrasound monitoring. |
| Metastatic Disease | Continue until tumor progression is evident. | Short-term use per cycle. |
| Hepatic Impairment (Severe) | 2.5 mg every other day. | Consult physician. |
| Method of Administration | Take orally, with or without food. | Swallow whole with water. |
Method of Administration
Oral: Take the tablet orally with or without food.
Consistency: Take at the same time each day for consistent treatment.
Missed Dose: Take as soon as remembered. If almost time for next dose, skip the missed dose and resume regular schedule. Do not double the dose.
Important Considerations
Prescription Only: This medication is available only with a prescription.
Not for Premenopausal Women (except fertility use): Contraindicated in premenopausal women except when used for ovulation induction under specialist supervision.
Pregnancy and Lactation: Can cause fetal harm; do not use during pregnancy or breastfeeding.
Monitoring: Bone mineral density and cholesterol levels should be monitored during breast cancer treatment.
Fertility Monitoring: Ovulation induction requires ultrasound monitoring.
What Precautions Should I Be Aware of Before Taking This Medication?
While generally safe and well-tolerated, specific conditions and interactions require awareness and caution.
Key Warnings and Contraindications
Pregnancy: Contraindicated; can cause fetal harm when administered to pregnant women.
Premenopausal Women: Not indicated for breast cancer treatment in premenopausal women; only used for fertility under specialist care.
Hypersensitivity: Contraindicated in patients with known hypersensitivity to letrozole or any excipients.
Lactation: Breastfeeding is strictly prohibited while using letrozole.
Bone Effects: Decreases in bone mineral density may occur; consider bone mineral density monitoring.
Cholesterol: Increases in total cholesterol may occur; consider cholesterol monitoring.
Fatigue and Dizziness: May cause fatigue, dizziness, and somnolence; exercise caution when driving or operating machinery.
Hepatic Impairment: Patients with severe hepatic impairment require dose adjustment (2.5 mg every other day).
Osteoporosis or Hormonal Disorders: Inform your doctor if you have these conditions.
Drug Interactions
| Interaction | Recommendation |
|---|---|
| Tamoxifen | Sequential treatment schedules (e.g., letrozole followed by tamoxifen) may be considered. |
| Other Anticancer Drugs | Consult healthcare provider for potential interactions with other medications. |
When to Seek Immediate Medical Attention
Severe Allergic Reaction: Difficulty breathing, swelling of the face/lips/tongue/throat.
Signs of Bone Fracture: Unexplained bone pain or fractures.
Signs of Liver Dysfunction: Yellowing of skin or eyes, dark urine, severe nausea.
Severe Fatigue or Dizziness: Affecting daily activities or causing falls.
Are There Any Potential Side Effects of Estrolet Tablet?
As with all medications, Estrolet Tablet may cause side effects, although not everyone experiences them.
Side Effects by Frequency
| Frequency | Side Effects |
|---|---|
| Very Common (≥10%) | Hot flashes, arthralgia/joint pain, flushing, asthenia, edema, headache, dizziness, hypercholesterolemia, sweating increased, bone pain, musculoskeletal pain. |
| Common (≥1% to <10%) | Nausea, fatigue, weight gain, back pain, weakness, osteoporosis, bone fracture. |
| Uncommon (≥0.1% to <1%) | Cataract (rare), visual disturbances. |
| Rare/Unknown | Hypersensitivity reactions, angioedema, anaphylactic reactions. |
When to Seek Immediate Medical Attention
Severe Allergic Reaction: Difficulty breathing, swelling of the face/lips/tongue/throat.
Signs of Bone Fracture: Unexplained bone pain or fractures.
Signs of Liver Dysfunction: Yellowing of skin or eyes, dark urine.
Severe Fatigue or Dizziness: Affecting daily activities.
Blurred Vision or Eye Irritation: Consult your doctor immediately.
How Should I Store This Medication?
Proper storage is essential for maintaining the stability, efficacy, and safety of Estrolet Tablets.
Optimal Storage Conditions
Temperature Control: Store below 25°C in a cool, dry place.
Protect from Moisture and Light: Store in the original package to protect from heat, moisture, and direct sunlight.
Keep Out of Reach: Keep the medication out of reach of children and pets.
Check Expiry: Do not use the medication if the expiry date has passed.
Who Manufactures Estrolet Tablet?
Estrolet Tablet is manufactured by Nabiqasim Pharma in Pakistan, a reputable pharmaceutical company known for producing high-quality medications. The brand is available through various online pharmacies in Pakistan.
Commitment to Quality and Safety
DRAP Approval: Registered with the Drug Regulatory Authority of Pakistan (DRAP).
GMP Compliance: Manufactured in facilities that follow strict Good Manufacturing Practices.
Quality Assurance: Each batch undergoes rigorous quality testing to ensure purity, potency, and consistency.
Patient Safety: A commitment to providing safe, effective, and high-quality medications.
Frequently Asked Questions (FAQs)
1. What is Estrolet Tablet used for?
Estrolet Tablet is primarily used for the treatment of hormone receptor-positive breast cancer in postmenopausal women. It is also commonly prescribed off-label for ovulation induction in women with PCOS or anovulatory infertility.
2. How does Estrolet Tablet work?
Estrolet contains letrozole, a nonsteroidal aromatase inhibitor that blocks the aromatase enzyme, preventing the conversion of androgens to estrogens. This significantly reduces estrogen levels in the body and inhibits the growth of hormone-sensitive breast cancer cells. In fertility treatment, it stimulates ovulation by reducing estrogen and increasing FSH production.
3. Can Estrolet be taken with food?
Yes, Estrolet tablets can be taken with or without food. It is recommended to take it at the same time each day for consistent treatment.
4. What should I do if I miss a dose?
If you miss a dose, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose and resume your normal schedule. Do not double the dose.
5. Is Estrolet safe for premenopausal women?
Estrolet is not indicated for breast cancer treatment in premenopausal women. However, it may be used off-label for ovulation induction in premenopausal women with infertility or PCOS, under the supervision of a gynaecologist.
6. How long should I take Estrolet Tablet?
For adjuvant breast cancer treatment, the recommended duration is 5 years or until disease recurrence. For metastatic disease, treatment continues until tumor progression is evident. For fertility, it is taken on specific cycle days as directed by your gynaecologist.
7. What are the common side effects?
Common side effects include hot flashes, joint pain, bone pain, headache, dizziness, nausea, fatigue, and hypercholesterolemia. These side effects are generally manageable but should be discussed with your doctor.
8. Do I need a prescription for Estrolet Tablet?
Yes, Estrolet Tablet is a prescription medication and is available only with a prescription from a qualified healthcare professional.
9. How should I store Estrolet?
Store below 25°C in a cool, dry place, protected from heat, moisture, and direct sunlight. Keep out of reach of children.
10. What should I do if I experience side effects?
If you experience mild side effects, inform your doctor at your next appointment. If you experience severe allergic reactions, difficulty breathing, signs of bone fracture, or signs of liver dysfunction, seek immediate medical attention.
