Ketamine Dose Is Not the Driver

In conversations about ketamine therapy in New York City and beyond, dose tends to dominate. Patients ask about it, clinics advertise it, and online forums obsess over it. That focus is understandable. It is also misleading.

At Fountain Health NYC, what we see clinically, over and over again, is that dose alone does not determine outcomes. What determines whether ketamine therapy leads to meaningful, durable change is protocol: how the treatment is designed, delivered, and integrated into a patient’s broader care. Dose matters, but it is not the driver.

Ketamine, Done Properly

Ketamine is not a conventional antidepressant. It doesn’t work by slowly improving symptoms over months. It works by temporarily interrupting entrenched neural patterns and opening a short window of neuroplasticity. This window is temporary.

Research shows that ketamine rapidly alters glutamatergic signaling and downstream pathways such as BDNF and mTOR, processes associated with synaptic growth and neural reorganization (Zarate et al., 2006; Duman & Aghajanian, 2012). But ketamine does not dictate how that plasticity is used. It merely creates the opportunity. That distinction matters clinically.

In a public exploration of ketamine’s effects on his brain activity, technology entrepreneur Bryan Johnson described how ketamine “scrambled” entrenched neural traffic patterns, leaving networks in a more flexible state before gradually returning to baseline. He likened it to a system momentarily open to new patterns before settling back into old ones.

Accurately speaking, ketamine opens a door. It does not walk a patient through it.

Dose vs. Protocol

Dose answers the narrow question: how much ketamine enters the body.

Protocol answers the meaningful questions: why this patient, at this time, in this way, and what happens before and after the experience.

In practice, we see patients with similar diagnoses and similar dosing parameters have very different results. Some stabilize and experience lasting changes; others feel only brief relief or become unsettled. These differences are rarely explained by milligrams alone.

Comedian Theo Von has described his own ketamine therapy as an emotional experience guided by context, one that helped access and process buried feelings in ways other methods hadn’t. Without a supported setting, the same experience could easily become confusing or ineffective.

This mirrors what the clinical literature shows: outcomes vary widely even at standardized doses because human biology, psychology, and context are not uniform (Feder et al., 2014; Wilkinson et al., 2018). Protocol is how clinicians work with that reality.

Why Ketamine Outcomes Don’t Vary Because of Dose

A common misconception, especially in casual discussion, is that deeper dissociation leads to better therapeutic results. It doesn’t.

Scientists and clinicians alike emphasize that ketamine’s rapid antidepressant effects appear at relatively low, sub-anesthetic doses, and increasing intensity does not reliably increase benefit. Its therapeutic effects are linked to how it influences neuroplasticity, not how deeply it alters consciousness.

Public voices in the wellness and science space reinforce this nuance. Neuroscientist Andrew Huberman discussed ketamine as a dissociative anesthetic being studied for its clinical potential, noting its evolving role in mental health care while also describing the mechanics of dissociation and neural change.

Clinically, higher doses tend to add side effects without proportional therapeutic gain: intensity can feel novel, but it’s not the same as meaningful change.

Protocol Is the Driver

Many public figures who have discussed ketamine publicly emphasize context: how, where, and why it’s used.

On The Joe Rogan Experience podcast, discussions of ketamine and other treatments often highlight the importance of applying them within a structured, therapeutic frame rather than as standalone experiences. Guests describe ketamine’s potential to “reset” neural patterns in ways that can be helpful when used responsibly and with support.

This observation aligns with how we practice at Fountain Health, why IV Ketamine is the only ketamine therapy we offer, and why we developed our own proprietary protocol. Ketamine is never treated as a single event or a quick fix. It’s one component of a larger, clinically guided therapeutic process that may include:

Medical evaluation and ongoing monitoring
Psychiatric care and medication management
Integration and psychotherapy
Metabolic and lifestyle support

That system, not the dose, is what drives outcomes.

Ketamine does not heal by force. It heals by creating conditions where change becomes possible. Dose may open the door. Protocol determines what happens next.

Read more from Dr. Doreen Zarfati, Chief Medical Officer at Fountain Health, how we approach ketamine therapy in NYC. Click here.

Click here to schedule a visit to Fountain Health to discuss ketamine and other advanced therapies to begin your healing.

Ketamine Dose Is Not the Driver