lack or loss of strength
Although hot flushes (flashes) are a common side effect, Arimidex is less likely than tamoxifen to cause these
skin rash 2
Side effect specifics Heart-related side effects
Common Arimidex side effects may include: numbness, tingling, or tickling feeling in your skin; hot flashes; weakness; joint pain or stiffness; bone
Everyone reacts differently to drugs and some people have more side effects
increased appetite
How it works Arimidex is a brand (trade) name for anastrozole, a medication that may be used to treat hormone-receptor
excessive sleepiness *
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Anastrozole Side Effects Print Save Anastrozole Side Effects Medically reviewed by Philip Thornton, DipPharm
insomnia *
Arimidex works quickly to lower estrogen and some side effects start within 24 hours of starting Arimidex
However, many people have no side effects or only have minor side effects
Menopause symptoms usually improve during the first few months of taking anastrozole
Up to 34% of people with breast cancer who took anastrozole experienced them to some degree
Arimidex’s mild side effects include: carpal tunnel syndrome
Side effects that you should report to your care team as soon as possible: Allergic reactions—skin rash, itching, hives, swelling of the face, lips, tongue, or throat Side effects that usually do not require medical attention (report to
Pelvic pain
Hot flashes, night sweats, and vaginal dryness are common side effects of all hormone therapies
Aromatase inhibitors (AIs) lower estrogen levels by stopping an enzyme in fat tissue (called aromatase) from changing other hormones into estrogen
This is not a complete list of side effects Anastrozole, sold under the brand name Arimidex among others, is an antiestrogenic medication used in addition to other treatments for breast cancer
Some side effects of Arimidex, such as nausea, hot flashes, pain, chest discomfort, dry eyes, a reduced sex drive, and weakness, should resolve within a few weeks of discontinuing Arimidex
29% of reviewers reported a positive effect, while 37% reported a negative effect
Side effects of hormone therapy for breast cancer are different for each medicine
Night sweats
Common side effects
to reduce the risk of hormone receptor-positive, early-stage breast cancer coming back (recurring) in post-menopausal women after surgery
Check with your doctor immediately if any of the following side effects occur: More common
Arimidex comes in tablet form and is usually taken once a day, with or without food
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After a few days or weeks, many of these will change