Ketamine and SSRIs: Questions About Taking Them Together

Some treatment plans include an antidepressant alongside a ketamine-related medication, but that does not establish that a particular combination is appropriate for you. Your prescriber and pharmacist need to review the exact products, doses, health conditions, and other substances involved. Do not stop your SSRI to prepare for treatment unless your clinician directs you to do so.

Compounded ketamine is not FDA-approved. FDA has not reviewed compounded medications for safety, effectiveness, or quality before marketing. Ketamine injection is approved for anesthesia, not psychiatric disorders. Compounded ketamine nasal spray is different from Spravato, the FDA-approved esketamine product used in certified healthcare settings.

What does the Spravato label establish?

FDA-approved Spravato may be used for treatment-resistant depression in adults alone or with an oral antidepressant. A separate approved use for depressive symptoms in adults with major depressive disorder and acute suicidal ideation or behavior requires an oral antidepressant. These indications and administration requirements are specific to Spravato.

They do not establish that every SSRI can be combined with every compounded ketamine formulation, that the same monitoring is sufficient, or that an at-home product has equivalent effects. Ask your clinician to identify the medication being discussed and the evidence relevant to that plan.

Bring a complete medication list

Include prescription names and doses, medicines used only occasionally, sleep aids, over-the-counter products, supplements, alcohol, and other substances. Tell the clinician about previous medication reactions and recent changes. An interaction review needs more information than whether you take “an antidepressant.”

• Who will coordinate decisions with my existing prescriber?
• Should my current medication schedule remain unchanged?
• Which possible interactions or combined effects matter in my case?
• What symptoms should prompt urgent care or a call before another dose?
• How will benefits and side effects be reviewed?

Avoid making changes on your own

Do not skip, taper, or stop an antidepressant to increase ketamine’s effects. Abrupt changes can create problems and make it harder to understand which treatment is responsible for new symptoms. NIMH advises working with a clinician when changing or stopping mental health medication.

If a clinician proposes a change, ask for clear written instructions and a follow-up plan. Make sure each prescribing professional knows about the other medications. Another person’s experience does not establish your safety.

Keep the diagnosis clear

A plan for depression should not be treated as proof of benefit for PTSD or another condition. Ask what each medication is intended to address and how you will assess progress. No combination guarantees improvement, and persistent or worsening symptoms deserve reassessment.

Risks and the treatment setting

Ketamine can cause sedation, dissociation, impaired thinking or coordination, increased blood pressure, and slowed breathing. Other concerns include abuse or misuse, worsening psychiatric symptoms, and urinary or bladder problems. A prescription or lower dose does not eliminate these risks.

At home, a healthcare professional is not onsite to monitor you or respond immediately to an adverse reaction. Virtual follow-up does not provide the same monitoring as an onsite team. Discuss whether the setting is appropriate, your medication interactions, and an emergency plan before treatment.

Discuss your questions with a clinician

Bliss Mist Rx LLC provides telehealth services and does not compound or manufacture medications. If treatment is prescribed, an independent, appropriately licensed compounding pharmacy dispenses the medication. A consultation does not guarantee a prescription; applicable prescribing and compounding requirements must be met.

Book a Free Virtual Appointment or Follow-Up to review your questions, alternatives, and next steps. This article provides general education and does not replace individualized medical advice.

Further reading: FDA: Spravato prescribing information; NIMH: mental health medication precautions; FDA: compounded-drug risks.