Question

I am a breastfeeding mother and i want to know if it is safe to use Anastrozole? Is Anastrozole safe for nursing mother and child? Does Anastrozole extracts into breast milk? Does Anastrozole has any long term or short term side effects on infants? Can Anastrozole influence milk supply or can Anastrozole decrease milk supply in lactating mothers?

Anastrozole lactation summary

Anastrozole is dangerous in breastfeeding
  • DrLact safety Score for Anastrozole is 7 out of 8 which is considered Dangerous as per our analyses.
  • A safety Score of 7 indicates that usage of Anastrozole may cause toxic or severe side effects in breastfed baby.
  • Our study of different scientific research indicates that Anastrozole may cause moderate to high side effects or may affect milk supply in lactating mother.
  • Our suggestion is to use safer alternate options rather than using Anastrozole .
  • Usage of Anastrozole is in contradiction to breastfeeding hence if it is must to use Anastrozole and there is no better alternative available then breastfeeding shall be stopped permanently or temporarily.
  • Score calculated using the DrLact safety Version 1.2 model, this score ranges from 0 to 8 and measures overall safety of drug in lactation. Scores are primarily calculated using publicly available case studies, research papers, other scientific journals and publically available data.

Answer by Dr. Ru: About Anastrozole usage in lactation

Steroidal aromatase inhibitor that impedes long-lasting estrogen synthesis. On latest update relevant data on breastfeeding was not found. Excretion into breast milk is very likely. After a 10 half-lives period (about 20 days) no trace would remain in the milk.

Alternate Drugs for Antineoplastic agents. ATC L01

Busulfan(Dangerous)
Cisplatin(Unsafe)
Cyclophosphamide(Dangerous)
Doxorubicin(Dangerous)
Etoposide(Dangerous)
Hydroxyurea(Low Risk)
Mitoxantrone(Dangerous)
Vincristine(Dangerous)
Methotrexate(Low Risk)
Imatinib(Unsafe)
Trastuzumab(Unsafe)
Bevacizumab(Low Risk)
Rituximab(Low Risk)
Alemtuzumab(Low Risk)
Fluorouracil(Dangerous)
Paclitaxel(Dangerous)
Carboplatin(Dangerous)
Cetuximab(Unsafe)
Ipilimumab(Unsafe)
Everolimus(Unsafe)
Thioguanine(Dangerous)
Dacarbazine(Dangerous)
Vinorelbine(Dangerous)
Bleomycin(Dangerous)
Vinblastine(Dangerous)
Nivolumab(Unsafe)
Nilotinib(Unsafe)
Dasatinib(Unsafe)
Cladribine(Dangerous)
Erlotinib(Unsafe)
Pazopanib(Unsafe)
Capecitabine(Dangerous)
Docetaxel(Dangerous)
Carmustine(Dangerous)
Exemestane(Dangerous)
Gemcitabine(Dangerous)
Dactinomycin(Dangerous)
Epirubucin(Dangerous)
Idarubicin-Hcl(Dangerous)
Ifosfamide(Dangerous)
Melphalan(Dangerous)
Mitomycin(Dangerous)
Oxaliplatin(Dangerous)
Pentostatin(Dangerous)
Procarbazine(Dangerous)
Teniposide(Dangerous)
Thiotepa(Dangerous)
Tretinoin Oral(Dangerous)
Altretamine(Dangerous)
Arsenic-Trioxide(Dangerous)
Asparaginase(Dangerous)
Bexarotene(Dangerous)
Cytarabine(Dangerous)
Chlorambucil(Dangerous)
Chlormethine(Dangerous)
Daunorubicin(Dangerous)
Rubidomycin(Dangerous)
Amethopterin(Low Risk)
Vlb(Dangerous)
Mechlorethamine(Dangerous)
5-ALA(Low Risk)
5-Fu(Dangerous)
MTX(Low Risk)
Daunomycin(Dangerous)
Actinomycin D(Dangerous)
Deoxycoformycin(Dangerous)
Disclaimer: Information presented in this database is not meant as a substitute for professional judgment. You should consult your healthcare provider for breastfeeding advice related to your particular situation. We do not warrant or assume any liability or responsibility for the accuracy or completeness of the information on this Site.