Glycine and Ketamine Therapy | Tovani Health
Glycine — Amino acid supplement (sleep / relaxation)
Verdict at Tovani Health
Fully compatible at sleep-supplement doses (1-3 g).
Glycine and ketamine have no clinically significant interaction. Glycine is an interesting molecule pharmacologically — it's an inhibitory neurotransmitter at glycine receptors AND a required co-agonist at NMDA receptors (binds the glycine-binding site distinct from where ketamine binds). The theoretical concern that glycine could 'rescue' ketamine blockade doesn't apply because ketamine blocks the NMDA channel pore, not the glycine binding site. At typical sleep-supplement doses (1-3 g at bedtime), the effect is mild relaxation with no documented ketamine interaction.
If you take Glycine 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 Glycine interacts with ketamine
Glycine is an inhibitory neurotransmitter at glycine receptors (similar to GABA's role at GABA receptors). It's also a required co-agonist at NMDA receptors for channel opening. Ketamine binds the open NMDA channel pore, so glycine receptor occupancy doesn't undo ketamine's blockade.
What we do at intake
Continue as normal. Glycine taken at bedtime doesn't interfere with morning KAP sessions.
Bottom line
Glycine and ketamine have no clinically significant interaction. Glycine is an interesting molecule pharmacologically — it's an inhibitory neurotransmitter at glycine receptors AND a required co-agonist at NMDA receptors (binds the glycine-binding site distinct from where ketamine binds). The theoretical concern that glycine could 'rescue' ketamine blockade doesn't apply because ketamine blocks the NMDA channel pore, not the glycine binding site. At typical sleep-supplement doses (1-3 g at bedtime), the effect is mild relaxation with no documented ketamine interaction.
Ready to find out if at-home ketamine fits your situation?
We’ll note that you’re on Glycine 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.