Drug details

Femara (letrozole)

type of Antineoplastics Aromatase Inhibitor, How Do Antineoplastic CDK Inhibitors Work?

Femara (letrozole) is a non-steroidal aromatase inhibitor (lowers estrogen
production) used to treat breast cancer in postmenopausal women. Femara is often
given to women who have been taking tamoxifen (Nolvadex, Soltamox) for 5 years.
Femara is available in generic form.

This drug may have the following side effects:
  • nausea,
  • headache,
  • dizziness,
  • diarrhea,
  • weakness,
  • constipation,
  • flushing (warmth, redness, or tingly feeling),
  • tiredness,
  • drowsiness,
  • weight gain,
  • trouble sleeping,
  • hair loss,
  • hot flashes,
  • joint/bone/muscle pain,
  • warmth in your face or chest,
  • unusual sweating or night sweats,
  • numbness/tingling/weakness/stiffness in your hand or fingers, or
  • pain in your hand that spreads to your arm, wrist, forearm, or shoulder.
The following drugs are related to Femara, either as a replacement or used together:
  • ExEm Foam (air polymer-type a intrauterine foam)
  • Aromasin (exemestane)
  • Zirabev (bevacizumab-bvzr injection)
  • Caelyx (pegylated liposomal doxorubicin hydrochloride injection)
  • Totect (dexrazoxane for injection, intravenous infusion only)
  • Docefrez (docetaxel)
  • Enhertu (fam-trastuzumab deruxtecan-nxki for injection)
  • Minivelle (estradiol transdermal system)
  • Fareston (toremifene)
  • Fentora (fentanyl buccal tablet)
  • Herceptin (trastuzumab)
  • Herceptin Hylecta (trastuzumab and hyaluronidase-oysk injection, for subcutaneous use)
  • Ibrance (palbociclib capsules for oral administration)
  • Jinteli (norethindrone acetate and ethinyl estradiol tablets, usp)
  • Kanjinti (trastuzumab-anns for injection)
  • Tykerb (lapatinib)
  • Margenza (margetuximab-cmkb injection, for intravenous use)
  • Megace (megestrol acetate)
  • Megace ES (megestrol acetate)
  • Milprosa (progesterone vaginal system)
  • Nolvadex (tamoxifen citrate)
  • Ontruzant (trastuzumab-dttb for injection)
  • Paclitaxel Tablets (paclitaxel)
  • Trodelvy (sacituzumab govitecan-hziy for injection, for iv use)
  • Talzenna (talazoparib capsules)
  • Trazimera (trastuzumab-qyyp for injection)
The following supplements are related to Femara, and may be used together with the drug:
  • Folic Acid (s.)
  • Olive (s.)
  • Vitamin A (s.)
  • Beta-Carotene (s.)