Tamoxifen
Also known as: Nolvadex, tamoxifen citrate
Classification
Serm
Regulatory Status
FDA-approved prescription product
Sources
2
Review
n/a
Overview
Tamoxifen is a selective estrogen receptor modulator (SERM) that competitively inhibits estrogen binding at estrogen receptors in breast tissue and has tissue-dependent agonist/antagonist effects elsewhere.
Evidence and limitations
Human/preclinical evidence breakdown is not available in this record.
Pathways
Benefits
Labeled and extensively studied for treatment of estrogen-receptor-related breast cancer and for risk reduction in defined high-risk populations; educational reference only.
Interactions & cautions
Flagged in source data
aromatase inhibitor coadministration without review
Drug interactions
warfarin — Increased bleeding risk; contraindicated with risk-reduction use per label (high)
strong CYP2D6 inhibitors — Possible reduced tamoxifen efficacy (review)
These are observational flags for review, not individualized instructions.
Sources
Educational reference only — not medical advice.