Can Biotin help with chemotherapy-induced nail changes?

Question

Hello doctor,

My roommate’s 60-year-old mother is undergoing oral chemotherapy for triple-negative breast cancer. She has noticed her fingernails becoming very dark and brittle, and she is even lifting slightly from the nail bed. Is this a common side effect of treatment, or does it require medical attention?

Additionally, she is wondering if supplements like Biotin could help strengthen her nails or if they might interfere with chemotherapy. She is concerned that these nail changes could indicate a more serious issue with her treatment. Please advise on this.

Thank you.

Answer 1

Hello,

Welcome to icliniq.com.

I read your query and can understand your concern.

Nail changes, such as darkening, brittleness, and lifting from the nail bed, are common side effects of chemotherapy, including oral treatments for triple-negative breast cancer. Chemotherapy affects rapidly dividing cells, including those in the nails, leading to these changes. While usually harmless and temporary, severe nail lifting (onycholysis) can increase the risk of infection, so it is essential to watch for redness, swelling, or pain. If any of these symptoms occur, she should consult her oncologist. Otherwise, gentle nail care, moisturizing, and avoiding trauma to the nails can help manage discomfort.

Regarding supplements, Biotin is often used to strengthen nails, but its interaction with chemotherapy has not been well studied. While generally safe, high doses can interfere with laboratory tests, so it is best to check with her oncologist before starting any new supplement. Her concerns about chemotherapy affecting her overall health are understandable, but these side effects do not necessarily mean the treatment is harming her beyond its intended effects. If she finds these symptoms particularly distressing, discussing them with her oncologist may lead to strategies for better management, including adjustments to her care plan.

I hope this helps.

Thank you and take care.

Regards.