GHB (Xyrem, Xywav) and Ketamine Therapy | Tovani Health
Xyrem (GHB) (also: Xywav) — GABA-B agonist / GHB receptor agonist (Schedule III as Xyrem; recreational GHB is Schedule I)
Verdict at Tovani Health
Theoretical respiratory-depression stacking is real; documented combination-harm evidence is not. We split prescription Xyrem from recreational GHB.
GHB and ketamine warrant individual evaluation, not categorical refusal. Honest read of the literature: GHB alone causes respiratory depression and deaths, especially when stacked with alcohol or benzodiazepines. Ketamine independently can depress respiration at higher doses. The combination is pharmacologically risky on first principles. However, there are no published case reports of GHB plus ketamine specifically causing fatality or severe respiratory depression that we have found. Our caution here is precautionary additive-CNS-depression reasoning, not documented combination-specific harm. For prescription Xyrem/Xywav for narcolepsy, KAP can proceed with careful timing. For recreational GHB use, the underlying use pattern matters more than the combination per se.
If you take Xyrem regularly and are considering at-home ketamine therapy, the combination is depends on your specific situation. This page covers the brief pharmacologic context and what we do at intake.
How Xyrem interacts with ketamine
GHB is a GABA-B and GHB receptor agonist with profound CNS depression at clinical and recreational doses. The therapeutic-to-toxic window is narrow. Combined with ketamine's CNS depression at higher doses, respiratory risk is theoretically additive though not specifically documented in case reports.
What we do at intake
For prescription Xyrem or Xywav: disclose dose and timing, and we will not run sessions in the same 24-hour window as a dose. We coordinate with your sleep medicine team. For recreational GHB or related compounds (GBL, 1,4-BD), we ask for at least 2 weeks of abstinence and individualized evaluation. We are not an enforcement service; honest disclosure lets us plan safely.
Bottom line
GHB and ketamine warrant individual evaluation, not categorical refusal. Honest read of the literature: GHB alone causes respiratory depression and deaths, especially when stacked with alcohol or benzodiazepines. Ketamine independently can depress respiration at higher doses. The combination is pharmacologically risky on first principles. However, there are no published case reports of GHB plus ketamine specifically causing fatality or severe respiratory depression that we have found. Our caution here is precautionary additive-CNS-depression reasoning, not documented combination-specific harm. For prescription Xyrem/Xywav for narcolepsy, KAP can proceed with careful timing. For recreational GHB use, the underlying use pattern matters more than the combination per se.
Frequently Asked Questions
I take Xyrem for narcolepsy. Can I do KAP at all?
Yes, but not in the same 24-hour window as a Xyrem dose. We coordinate session timing with your sleep medicine team.
Ready to find out if at-home ketamine fits your situation?
We’ll note that you’re on Xyrem (GHB) 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.
Sources
The verdict and clinical guidance on this page are based on the following peer-reviewed literature and FDA prescribing information.
- Gamma hydroxybutyrate (GHB), gamma butyrolactone (GBL) and 1,4-butanediol (1,4-BD; BDO): A literature review with a focus on UK fatalities related to non-medical use. Corkery JM, Loi B, Claridge H, et al.. Neuroscience and Biobehavioral Reviews. 2015. PMID: 25843781
Reviews GHB-related fatalities. Confirms most GHB deaths involve co-ingestion with alcohol or other CNS depressants; ketamine-specific cases not documented.
Clinically reviewed
Reviewed by Benjamin Soffer, DO on May 16, 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.