Letrozole (Femara) and Ketamine Therapy | Tovani Health
Femara (Letrozole) — Aromatase inhibitor (breast cancer adjuvant; off-label fertility)
Verdict at Tovani Health
Fully compatible with KAP.
Letrozole and ketamine have no clinically significant interaction. Used for hormone-positive breast cancer adjuvant therapy (5-10 year courses) and off-label for ovulation induction in IVF cycles. The intrinsic concerns (bone density loss with chronic use, hot flashes) are unchanged by KAP.
If you take Femara regularly and are considering at-home ketamine therapy, the combination is generally safe at therapeutic doses. This page covers the brief pharmacologic context and what we do at intake.
How Femara interacts with ketamine
Letrozole inhibits aromatase, blocking conversion of androgens to estrogens in postmenopausal patients (treatment context) or in ovary (IVF context). CYP2A6 and CYP3A4 metabolism; no meaningful effect on ketamine PK.
What we do at intake
Continue as prescribed. Disclose treatment context (oncology vs IVF).
Bottom line
Letrozole and ketamine have no clinically significant interaction. Used for hormone-positive breast cancer adjuvant therapy (5-10 year courses) and off-label for ovulation induction in IVF cycles. The intrinsic concerns (bone density loss with chronic use, hot flashes) are unchanged by KAP.
Ready to find out if at-home ketamine fits your situation?
We’ll note that you’re on Femara (Letrozole) at intake. The eligibility check takes 5 minutes and gives you an honest answer about whether at-home ketamine fits your specific situation.
FL and NJ residents only. Benjamin Soffer, DO — Tovani Health.
Clinically reviewed
Reviewed by Benjamin Soffer, DO on May 22, 2026. Dr. Soffer is a board-certified physician (American Board of Internal Medicine) licensed in Florida and New Jersey, prescribing at-home ketamine therapy through Tovani Health.
This page is general information about how this medication interacts with at-home ketamine therapy at Tovani Health. It is not a substitute for medical advice from your prescribing physician about your specific situation. Always discuss medication changes with the doctor who prescribed them.