Ketamine therapy isn’t a single protocol. Different programs use a broad dosing range, from daily, low-dose ketamine to short-course, high-dose sessions.
The same medication (physician-prescribed, sub-anesthetic ketamine) is used across several formats that differ substantially in format and what they’re designed to accomplish. Understanding those differences is useful both for people deciding where to start and for people trying to make sense of why one approach worked (or didn’t) for someone else.
This post explains how ketamine dosing works, what the main protocol types look like in practice, and what each one is designed to do.
How ketamine dosing works
Ketamine is prescribed at sub-anesthetic doses, meaning doses well below what’s used for surgical anesthesia. Within that range, there is significant variation, and dose level is one of the primary variables that shapes how treatment feels and what it’s designed to accomplish.
Key factors that influence how a dose is experienced:
- Dose amount: measured in milligrams, calibrated to body weight and individual response
- Delivery method: intravenous (IV), sublingual (lozenge or troche), nasal spray, or intramuscular; each has different bioavailability and onset characteristics
- Frequency: whether doses are taken daily, weekly, or in compressed short-course clusters
- Individual variation: metabolism, sensitivity, and prior exposure all influence response
A prescribing clinician sets the starting dose based on intake evaluation and ongoing clinical monitoring — in good programs, with input from the individual on their goals and response. For at-home protocols, dose adjustments are confirmed through telehealth check-ins.
What are the different types of ketamine therapy?
There are two primary dosing models used in ketamine therapy today. They reflect different clinical philosophies about how the medication should work.
Higher-dose, intensive short-course protocols
This is the original clinical model, developed around IV ketamine infusion and still used in both in-clinic and at-home settings.
The structure: a defined number of doses, typically six, delivered over a compressed window of two to three weeks, followed by maintenance doses spaced further apart. Each individual dose sits higher within the therapeutic range. The goal is rapid, significant symptom reduction within the course window.
IV ketamine clinics use this model almost exclusively. Some at-home platforms have adapted it: the same front-loaded structure, with oral medication substituted for IV delivery, often with a sitter requirement and a guided experience component.
Higher doses in this context produce more pronounced dissociative effects per session (for a review of adverse effects by dose range, see this 2025 clinical overview): altered perception, detachment from ordinary thought, and in some cases significant perceptual shifts. This is part of how the model is designed to work: intensity of effect is considered therapeutically relevant, not incidental.
This model prioritizes speed of initial response. It is designed for people who need rapid symptom reduction and can organize their schedule around defined treatment windows.
Low-dose ketamine protocols
This is a newer model that has developed as at-home access expanded and clinicians began exploring what sustained, lower-intensity contact with the medication could accomplish.
The structure: lower therapeutic doses taken daily or near-daily, calibrated for tolerability and integration into ordinary life. The experience per dose is subtler, with less dissociation and less disruption to daily functioning, and the cumulative effect builds over weeks and months. Doses are personalized, with adjustments confirmed by the prescribing clinician over time based on individual response.
Low-dose ketamine in this context still produces a pharmacological effect; people typically notice mild relaxation, reduced emotional reactivity, or a subtle shift in mental state. The experience is not invisible. It is calibrated to stay within a functional range, rather than to produce a significant altered state per session.
The clinical rationale is grounded in how neuroplasticity works: the enhanced neuroplastic window ketamine produces doesn’t require peak dissociation to be therapeutically useful. Repeated, tolerable contact with a more regulated internal state, rather than front-loaded intensity, may support more durable change over time.
This model prioritizes consistency and integration. It is designed for people who want treatment that fits into daily life and who are oriented toward cumulative change rather than a defined short course.
Mindscape’s daily low-dose model extends this further with three dosage tiers and both oral and nasal delivery options, giving clinicians more range to personalize the protocol from the start. The care adjusts over time as each member’s response develops, rather than following a single fixed tier throughout.
How does dosing work in at-home ketamine therapy?
In at-home ketamine therapy, dosing is determined by the prescribing clinician during an initial telehealth evaluation covering medical history, current symptoms, prior treatment history, and contraindications.
From there:
- A starting dose is prescribed, calibrated to individual factors including body weight and symptom profile
- Medication is compounded by an independent, certified pharmacy and shipped directly to the patient
- Dose adjustments happen through ongoing telehealth check-ins — the clinician monitors response and modifies the prescription as needed
- Dosing decisions are clinician-directed; some programs incorporate member input through ongoing check-ins
In low-dose daily protocols, the starting dose is often lower than people expect. This is intentional: the protocol begins at a tolerable level, with the starting point informed by the individual. Adjustments are then confirmed by the prescribing clinician over time.
In higher-dose at-home programs following an intensive short-course structure, doses are calibrated higher within the therapeutic range, and some programs require another adult to be present during sessions.
What is ketamine microdosing, and is it the same as low-dose ketamine therapy?
These terms are sometimes used interchangeably, but they refer to different things.
Ketamine microdosing, as commonly used, refers to sub-perceptual doses, meaning amounts small enough that no noticeable altered state occurs. This framing comes primarily from the psychedelic research space and describes doses deliberately below the threshold of effect.
Read our piece on how ketamine microdosing works.
Low-dose ketamine therapy is not sub-perceptual. Even at the lower end of the clinical range, therapeutic ketamine doses are designed to have a pharmacological effect. The experience is subtler than higher-dose protocols, but it is not invisible.
The distinction matters because it shapes expectations. Low-dose ketamine therapy doesn’t mean you won’t feel anything. It means the experience is calibrated to stay within a tolerable, functional range.
Is low-dose ketamine more effective than high-dose?
Effectiveness depends on what someone is trying to accomplish and what “effective” means in context. Both approaches are legitimate. They serve different needs.
Intensive short-course protocols have the largest body of clinical research behind them — including IV, IM, and higher-dose sublingual formats delivered in clinical settings. They are well-established for acute, treatment-resistant presentations and associated with rapid onset of symptom reduction.
Low-dose daily protocols have a smaller but growing evidence base. A 2022 study published in the Journal of Affective Disorders, one of the largest on at-home sublingual ketamine, found that 62.8% of patients reported a 50% or greater reduction in depression symptoms, comparable to reported success rates for IV protocols, achieved through a different dosing model.
The more clinically relevant question is often which model a person can actually sustain. Intensive short-course protocols — whether in-clinic or at-home — are structured around defined treatment blocks, which work well for acute need but can be harder to maintain over time. The cost per treatment, coordination involved, and the need to re-engage each cycle may also create real barriers for ongoing access.
Which type of ketamine therapy is right for me?
Choosing the right protocol depends on individual factors. Symptoms, health history, lifestyle, and personal preference all play a role. A prescribing clinician should evaluate fit, and good care incorporates the person’s own goals and circumstances into that decision.
For a comparison of current at-home ketamine programs, see our Best At-Home Ketamine Therapy guide.
Higher-dose intensive protocols may be more appropriate for:
- Acute, rapidly worsening symptoms
- Severe treatment-resistant depression requiring rapid response
- People with complex medical histories that benefit from closer monitoring
- People who prefer a defined treatment window with a clear endpoint
Low-dose daily protocols may be more appropriate for:
- Persistent symptoms that haven’t responded to standard treatment, but are not acutely crisis-level
- People who want treatment that integrates into daily life without disruption
- People interested in cumulative, long-term change rather than a compressed course
- People for whom cost and geographic access are relevant factors
If acuity is high (symptoms are severe, rapidly escalating, or include suicidal thoughts), IV ketamine with in-person medical monitoring may be the more appropriate starting point.
If you need immediate support in the U.S., call or text 988 (Suicide & Crisis Lifeline).
Frequently Asked Questions
What are the different types of ketamine therapy?
The two primary dosing models are higher-dose intensive short-course protocols and low-dose daily protocols. Higher-dose protocols deliver a defined series of doses, typically six over two to three weeks, at higher levels within the therapeutic range, with the goal of rapid symptom reduction. Low-dose daily protocols use lower therapeutic doses taken daily or near-daily, calibrated for tolerability and integration into everyday life, with cumulative change building over time.
How does dosing work in at-home ketamine therapy?
A licensed clinician determines the starting dose through a telehealth evaluation covering medical history, current symptoms, and individual factors. Medication is prescribed, compounded by an independent certified pharmacy, and shipped to the patient. Ongoing check-ins allow for dose adjustments over time.
Is low-dose ketamine therapy the same as microdosing?
Not exactly. Microdosing, a term borrowed from the psychedelic research space, refers to sub-perceptual doses: pharmacologically active, but below the threshold of noticeable subjective effect. It sits at the lower end of the low-dose spectrum. Low-dose ketamine therapy describes a range that includes microdosing as well as doses that do produce a mild, noticeable shift in state.
How many sessions does a ketamine therapy protocol involve?
Higher-dose intensive protocols typically involve six doses over two to three weeks, with maintenance doses following. Low-dose daily protocols don’t follow a defined session count. They are ongoing, ideally with the starting dose informed by the individual. Adjustments are confirmed through clinician check-ins over time.
Can you switch between ketamine dosing protocols?
Yes. Some people complete an initial intensive course for acute stabilization and transition to a low-dose daily protocol for ongoing maintenance. This transition should be coordinated with the prescribing clinician. The two models can complement each other depending on what someone needs at different points in their care.
Mindscape is a care-coordination platform for at-home ketamine therapy, working with independent licensed clinicians and independent pharmacies across 30+ states. Mindscape uses precision low-dose daily protocols personalized to each member’s needs, with care that adjusts over time. Mindscape holds LegitScript dual certification (Pharmacy + Telemedicine).
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