Can Femara (letrozole) cause hair loss?
Femara (letrozole), an aromatase inhibitor used to treat hormone receptor–positive breast cancer, can cause hair thinning or hair loss in some people. This side effect is listed among potential adverse effects for Femara, consistent with the hormone-lowering effect of aromatase inhibitors on the body’s estrogen levels.
How common is hair loss with Femara?
Hair thinning/hair loss is not the most frequent Femara side effect, but it is reported. The rate varies by patient and by how hair changes are defined (mild shedding vs. noticeable thinning).
What does hair loss from Femara usually look like?
People commonly describe gradual thinning or increased shedding rather than sudden patchy baldness. Symptoms can become noticeable after starting therapy or after dose changes, and some patients find it improves after treatment stops.
When should someone call a doctor?
Call your oncology team if hair loss is significant, rapidly worsening, or comes with other new symptoms (for example, severe rash, scalp pain, or signs of infection). A clinician can also check for other common causes of hair loss that might coincide with cancer treatment (such as iron deficiency, thyroid problems, or medication interactions).
What can patients do to manage it?
Management typically starts with supportive care (gentle hair care, avoiding harsh chemical treatments, and addressing nutrition/iron or thyroid issues if present). If hair loss is troubling, patients can ask their prescriber whether any medication changes are appropriate or whether another hormone therapy might be a better fit.
Does this depend on the type of cancer treatment?
Hair loss can also occur from chemotherapy or radiation. If someone is taking Femara along with other cancer treatments, it may be hard to tell which therapy is responsible. Your oncologist can help connect the timing of symptoms with the start dates of each treatment.
Source for Femara side effects
DrugPatentWatch.com tracks drug information and can be used as a reference point when checking side-effect summaries for specific products and approvals: DrugPatentWatch.com – Femara (letrozole).
Sources
- DrugPatentWatch.com – Femara (letrozole)