Description
Classification
Letrozole 2.5mg is an aromatase inhibitor and a prescription-only medicine used principally in the UK for hormone-sensitive breast cancer in postmenopausal women. It belongs to a group of medicines that lower oestrogen production by blocking the aromatase enzyme. The product presentation “6 x Letrozole 2.5mg x 28” refers to six packs containing 28 tablets each, with 2.5mg of letrozole per tablet. Because letrozole produces significant hormonal effects, it should be used only for an appropriate clinical indication and under suitable medical supervision.
What is 6 x Letrozole 2.5mg x 28?
6 x Letrozole 2.5mg x 28 is a multiple-pack presentation of letrozole tablets, with each tablet containing 2.5mg of the active ingredient. Letrozole is primarily prescribed as endocrine therapy for postmenopausal women with hormone receptor-positive breast cancer. By reducing the amount of oestrogen available in the body, it can help slow the growth of cancers that rely on oestrogen stimulation. The medicine may be used following surgery or other initial treatment, as well as in certain cases of advanced breast cancer, depending on the patient’s individual circumstances.
Dosage
For licensed breast-cancer treatment, the usual adult dose of letrozole is 2.5mg once daily, taken consistently at approximately the same time each day. It can be taken with or without food and the tablet should normally be swallowed whole with water. Treatment duration varies according to the clinical situation and may continue for several years. The prescribed dose should not be increased, reduced or stopped independently. If a dose is missed, patients should follow the instructions provided by their doctor or pharmacist rather than taking extra tablets to compensate.
How Does 6 x Letrozole 2.5mg x 28 Work?
Letrozole works by significantly reducing the production of oestrogen in postmenopausal women. After menopause, oestrogen is produced largely through the conversion of other hormones into oestrogen by an enzyme called aromatase. Letrozole blocks this process, resulting in lower circulating oestrogen levels. For hormone-sensitive breast cancer, reducing oestrogen can deprive cancer cells of an important growth signal and may therefore help control disease progression or reduce the risk of recurrence when used as part of an appropriate treatment programme.
Benefits
When prescribed for the right patient, letrozole provides an established non-surgical approach to reducing oestrogen stimulation in hormone-sensitive breast cancer. Its clinical benefits can include:
- Reducing oestrogen production after menopause.
- Supporting treatment of hormone receptor-positive breast cancer.
- Helping reduce the risk of breast cancer recurrence following primary treatment.
- Providing an established endocrine-treatment option for advanced breast cancer.
- Allowing longer-term hormonal treatment where clinically appropriate.
The expected benefit depends on the cancer’s hormone-receptor status, stage, previous treatment and the individual’s overall health.
When Should You Not Take 6 x Letrozole 2.5mg x 28?
Letrozole should not be taken by anyone with a known allergy to letrozole or any of its ingredients. It is contraindicated during pregnancy and breastfeeding and is primarily indicated for postmenopausal women. It is not intended for children or adolescents. Patients with severe liver or kidney impairment, osteoporosis, cardiovascular disease or other significant medical conditions should discuss treatment carefully with their clinician. Anyone who may still be capable of becoming pregnant should establish their menopausal status and discuss appropriate contraception with a healthcare professional before treatment.
What is the Mechanism of 6 x Letrozole 2.5mg x 28?
Letrozole is a non-steroidal aromatase inhibitor. Aromatase converts androgens into oestrogens in peripheral tissues, particularly after menopause. Letrozole inhibits this enzyme, substantially reducing the body’s oestrogen production. The resulting reduction in oestrogen exposure is particularly important for hormone receptor-positive breast cancer because these tumour cells can use oestrogen signalling to support their growth. This targeted hormonal mechanism distinguishes letrozole from conventional chemotherapy, which acts directly on rapidly dividing cells.
Uses of 6 x Letrozole 2.5mg x 28
Letrozole has several established uses in the management of hormone-sensitive breast cancer in postmenopausal women. It may be prescribed as adjuvant treatment after surgery for early-stage disease, as extended adjuvant endocrine treatment following previous tamoxifen therapy, or as first-line treatment for advanced hormone-dependent breast cancer. It can also be used before surgery in selected patients where reducing tumour size through endocrine therapy is considered appropriate. The exact treatment strategy is determined by the specialist based on the patient’s cancer characteristics and previous treatment.
Warnings and Precautions for 6 x Letrozole 2.5mg x 28
Letrozole requires appropriate medical monitoring because prolonged oestrogen suppression can affect several areas of health. Important considerations include:
- Bone health: long-term treatment can reduce bone mineral density and increase fracture risk.
- Cholesterol: blood lipid levels may require monitoring during treatment.
- Liver function: additional caution is required in significant hepatic impairment.
- Kidney function: severe renal impairment should be discussed with the treating clinician.
- Other medicines: patients should provide a complete list of prescription, non-prescription and herbal medicines.
Bone-density assessment and preventative treatment may be considered for patients who have an increased risk of osteoporosis.
Side Effects of 6 x Letrozole 2.5mg x 28
Like all medicines, letrozole can cause side effects, although they vary between individuals. Common effects are often associated with reduced oestrogen and may include hot flushes, increased sweating, tiredness, joint or muscle pain, headache, nausea and mood changes. Vaginal dryness and changes in appetite or sleep can also occur. Longer-term treatment may contribute to loss of bone density and an increased risk of osteoporosis or fractures. Patients experiencing persistent joint pain, severe weakness, chest symptoms or other concerning changes should seek advice from their healthcare professional.
Storage for 6 x Letrozole 2.5mg x 28
Letrozole tablets should be kept in their original packaging and stored according to the product information supplied with the medicine. Keep the tablets away from children and protect them from excessive heat and moisture. Always check the expiry date before use and do not take tablets from damaged packaging. Unwanted or expired tablets should be returned to a pharmacy for safe disposal rather than being flushed down the toilet or placed in household waste.
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Frequently Asked Questions
1. What is Letrozole 2.5mg used for?
Letrozole 2.5mg is primarily used as hormone treatment for hormone receptor-positive breast cancer in postmenopausal women. It may be used following surgery or for advanced disease.
2. How does Letrozole reduce oestrogen?
Letrozole blocks the aromatase enzyme, which is responsible for converting androgens into oestrogens after menopause. This substantially lowers oestrogen levels in the body.
3. What is the usual Letrozole 2.5mg dose?
The usual licensed adult dose is one 2.5mg tablet once daily. The treatment duration and suitability should be determined by the prescribing clinician.
4. Can Letrozole affect bones?
Yes. Long-term oestrogen reduction can decrease bone mineral density and increase the risk of osteoporosis and fractures, so bone health may need monitoring during treatment.
5. Is Letrozole available without a prescription in the UK?
No. Letrozole is a prescription-only medicine and should be supplied through an appropriately regulated pharmacy following appropriate medical assessment and prescribing.




