Anastrozole is an aromatase inhibitor used to reduce estrogen levels associated with specific types of breast cancer.
Anastrozole belongs to a class of medicines called aromatase inhibitors. It works by reducing the amount of estrogen the body makes. In Hong Kong, anastrozole is prescribed mainly for hormone-sensitive health conditions. Several products on the market contain this ingredient, including both brand-name and generic versions.
In Hong Kong you will find anastrozole in tablets such as Arimidex, Armotraz, and the generic product simply labeled Anastrozole. The tablets are usually available in 1 mg strength, though some combinations may contain other hormones for specific treatment plans. All three are oral tablets; they differ mainly in packaging and manufacturer, not in the active ingredient itself. These medicines are listed on the Hong Kong Department of Health’s product register as approved anastrozole-containing options.
These uses reflect the ways Hong Kong clinicians employ anastrozole to modify hormone pathways. The medication is intended for adult patients; specific age guidance appears on each product’s label.
Anastrozole blocks an enzyme called aromatase, which the body uses to turn other hormones into estrogen. With less estrogen circulating, conditions that rely on this hormone tend to slow down or improve. Most people notice a change in hormone levels within a few weeks of starting the tablets, although the full therapeutic effect can take longer to become apparent.
These effects are generally short-lived and do not require medical intervention unless they persist.
If any of these signs appear, seek urgent medical help.
For a full list of possible interactions, refer to the specific medication’s information leaflet.
Store anastrozole tablets at room temperature, away from moisture and direct sunlight. The usual treatment course is determined by the prescribing clinician, ranging from a few months for short-term hormone control to several years for chronic conditions. Always follow the instructions printed on the product label, as each brand may have slight differences in packaging or patient information. For detailed dosing and administration, see the individual medication’s guide.
Aromatase inhibitor: A drug that stops the body from making estrogen.
Estrogen: A hormone that influences many body functions, including growth of certain breast cancers.
This article offers general educational information about anastrozole as an active substance used in various medicines. Its purpose is to help patients better understand the ingredient and the conditions it is used to treat. It is not a substitute for professional medical advice or for the specific instructions provided with individual products. Medicines containing anastrozole may differ in formulation, strength, and directions for use. Always refer to the labeling of your particular medication and follow your healthcare provider’s guidance for complete information on proper use, dosage, and safety.
