What Is Ketamine Therapy: A Complete Guide for Houston Patients

If you’ve spent years cycling through antidepressants that didn’t work, therapy sessions that helped a little but not enough, and prescriptions that left you feeling foggy without feeling better, you’re not alone. Millions of Americans live with depression, anxiety, PTSD, and chronic pain that traditional medicine simply hasn’t touched. For many of them, ketamine therapy has changed everything.

But what is ketamine therapy, really? You’ve probably heard the word in passing, maybe seen a headline or two, and wondered if it’s something you should look into. This guide walks you through exactly what ketamine therapy is, how it works in your brain, what conditions it treats, and what to expect if you’re thinking about trying it here in Houston.

What Ketamine Therapy Actually Is

Ketamine started its life in 1962 as an anesthetic. Doctors have used it safely in operating rooms, emergency departments, and pediatric wards for over sixty years. What’s new isn’t the medication itself but the discovery that, at much lower doses than the ones used for surgery, ketamine can produce rapid and lasting relief from depression, anxiety, PTSD, OCD, suicidal thoughts, and certain types of chronic pain.

When used this way, ketamine is administered in a controlled medical setting under the supervision of an experienced physician. At Catalyst Health & Wellness, that physician is Dr. Ho, a board-certified anesthesiologist and former pediatrician who personally oversees every patient’s care.

Ketamine therapy isn’t a one-and-done miracle pill. It’s a structured medical treatment, usually delivered as a series of sessions over a few weeks, with maintenance care designed around how your body and brain respond. Think of it less as “taking a medication” and more as a guided clinical experience that helps your nervous system reset.

How Ketamine Works in Your Brain

Here’s where ketamine differs from almost every antidepressant you’ve ever heard of. Traditional medications like SSRIs and SNRIs work on serotonin and norepinephrine, two of the brain’s chemical messengers. They take four to twelve weeks to build up enough effect to make a difference, and even then, a significant portion of patients don’t respond.

Ketamine doesn’t touch serotonin. Instead, it works on a completely different system called glutamate, which is the brain’s most abundant neurotransmitter and the one responsible for learning, memory, and the formation of new neural connections.

When ketamine enters your system, it temporarily blocks NMDA receptors. That sounds technical, but the result is straightforward: your brain gets a sudden surge in something called BDNF, or brain-derived neurotrophic factor. BDNF acts like fertilizer for your neurons. It encourages the growth of new connections and strengthens existing ones, especially in the parts of the brain that control mood, fear, and emotional regulation.

For people whose depression or PTSD has essentially worn deep grooves into their thinking, this matters enormously. Ketamine helps the brain become flexible again. It opens up the possibility of new pathways, which is why so many patients describe feeling not just less depressed, but genuinely different, like a fog has lifted that they didn’t even realize they’d been living in.

The National Institutes of Health has published extensive research showing how ketamine reverses the neural changes underlying depression, often within hours of a single dose.

The Conditions Ketamine Therapy Treats

Ketamine isn’t a fit for every condition, but the list of what it can help with has grown steadily over the past two decades. At Catalyst Health & Wellness, our patients come to us looking for relief from:

• Treatment-resistant depression when two or more antidepressants have failed
• Severe anxiety, including generalized anxiety disorder and social anxiety
• Post-traumatic stress disorder (PTSD), especially in veterans, first responders, and trauma survivors
• Obsessive-compulsive disorder (OCD) that hasn’t responded to SSRIs and exposure therapy
• Bipolar depression, the depressive phase of bipolar disorder
• Suicidal ideation, where rapid relief can be life-saving
• Chronic pain conditions like fibromyalgia, complex regional pain syndrome, and neuropathic pain
• Migraines that don’t respond to standard preventive medications
• Ehlers-Danlos Syndrome-related pain
• Adolescent depression in carefully selected cases

For some of these conditions, ketamine works in hours. For others, it takes a series of sessions to see meaningful change. Either way, it’s almost always faster than the traditional path of trying medication after medication while you keep suffering.

Different Ways Ketamine Is Administered

Not all ketamine therapy looks the same. The delivery method matters because it changes how the medication is absorbed, how predictable the dose is, and what conditions it’s best suited for. At Catalyst Health & Wellness, we offer the full range so we can match the approach to what you actually need.

IV ketamine is the gold standard for most mental health conditions. The medication is delivered slowly through an IV over about 40 minutes, with another 20 minutes of recovery afterward. For chronic pain, the protocol extends to four hours of treatment with two hours of recovery, which allows us to address the deeper pain pathways involved in conditions like fibromyalgia and Ehlers-Danlos Syndrome.

IM ketamine uses an intramuscular injection rather than an IV. It’s quicker to administer and works well for some patients, though the absorption is slightly less predictable than IV.

Spravato (esketamine) is the FDA-approved nasal spray for treatment-resistant depression. It’s the only formulation of ketamine that’s officially approved for depression, which means insurance often covers it. We’re a REMS-certified Spravato provider, so we can offer this option for patients who qualify.

Ketamine-Assisted Psychotherapy (KAP) combines ketamine sessions with structured therapy, in partnership with Houston Healing Collective. For patients who want to actively process trauma or difficult emotions during the open, neuroplastic window ketamine creates, this approach can be transformative.

What a Ketamine Session Actually Feels Like

A lot of patients walk in nervous. That’s normal. Most have only heard of ketamine in the context of recreational use, and the idea of an altered state of consciousness, even a brief one, can feel intimidating.

Here’s what actually happens. You arrive at one of our three Houston locations after fasting for six hours and drinking only small amounts of clear liquid in the two hours beforehand. We check your vitals, place a small IV (Dr. Ho’s pediatric background makes this remarkably gentle), and settle you into a reclinable chair in a private treatment room. The lights dim. You can use noise-canceling headphones with calming music, an eye mask, and a warm blanket if you’d like.

The infusion itself is gradual. Most people describe a soft, dreamlike quality to the experience, sometimes with floating sensations or a feeling of detachment from physical worries. You’re not asleep. You’re not in pain. You’re aware enough to push a button or speak if you need to, but you’re released from the constant grip of whatever has been weighing you down. Dr. Ho or a member of our medical team is either in the room with you or right outside the door, monitoring your vitals throughout.

When the session ends, you’ll recover for about 20 minutes before going home with a friend or family member who can drive. You shouldn’t drive yourself, make important decisions, or operate machinery for the rest of the day. Most patients describe feeling tired but lighter, sometimes profoundly so, even after a single session.

How Many Sessions You’ll Need

For mood disorders, we typically recommend an initial series of six sessions over two to three weeks. This loading phase lets your brain build on the changes from each session. Many people feel substantial relief by the third or fourth treatment.

After that, maintenance looks different for everyone. Some patients do well with a session every few weeks. Others stretch it to once a month or even less frequently. Chronic pain protocols vary more widely depending on the condition. Dr. Ho personalizes every plan, and we adjust based on how you’re actually responding rather than following a rigid script.

Is Ketamine Therapy Safe?

Yes, when it’s done right. Ketamine has been used in medicine for over six decades, and at the doses we use for therapy (which are far below anesthetic doses), serious complications are rare. The most common side effects during treatment are mild dizziness, brief dissociation, slight nausea, and small temporary changes in blood pressure or heart rate, all of which we monitor continuously.

Ketamine isn’t right for everyone. People with uncontrolled high blood pressure, certain heart conditions, active psychosis, or who are pregnant or breastfeeding may not be good candidates. That’s why every patient at Catalyst goes through a thorough medical screening before we begin treatment.

The Harvard Medical School and most major academic medical centers now agree that ketamine, when administered in a properly supervised clinical setting, has a strong safety profile and a meaningful role in treating conditions that haven’t responded to anything else.

Why Houston Patients Choose Catalyst Health & Wellness

You have options in Houston, and we want you to choose the right one for you. What makes Catalyst different is the combination of medical expertise, comprehensive treatment options, and genuinely accessible care. Dr. Ho is a board-certified anesthesiologist whose dual training in pediatrics and anesthesiology means he understands both the medication and the human being receiving it.

We also offer all the major treatment modalities under one roof: IV ketamine, IM ketamine, Spravato, TMS, Stellate Ganglion Block, and Ketamine-Assisted Psychotherapy. If one approach isn’t the right fit, we have others. Three Houston locations and extended hours from 5am to 9pm seven days a week mean treatment fits your life rather than the other way around.

If you’ve been wondering what ketamine therapy is and whether it might be right for you, the next step is a free phone consultation. There’s no pressure, no obligation, just a conversation to see if this could be a path forward.

Learn more about our ketamine therapy services in Houston or call us today.

Catalyst Health & Wellness Locations

Catalyst Health & Wellness Heights

104 W. 12th Street, Suite B, Houston, TX 77008

Phone: 800-772-1242

Hours: Monday through Sunday, 5 AM to 9 PM

Catalyst Health & Wellness Southwest

7710 Beechnut, Suite 206, Houston, TX 77074

Phone: 800-772-1242

Hours: Monday through Sunday, 5 AM to 9 PM

Catalyst Health & Wellness South Loop

6300 West Loop S, Suite 526, Bellaire, TX 77401

Phone: 800-772-1242

Hours: Monday through Sunday, 5 AM to 9 PM

Hours: Monday through Sunday, 5am to 9pm
Website: https://catalystketamine.com/

Medical Disclaimer: The information contained in this blog post is for educational and informational purposes only and is not intended as medical advice. It should not be used to diagnose or treat any health condition or replace consultation with a qualified healthcare provider. Ketamine therapy is a medical treatment that requires evaluation by a licensed physician to determine appropriateness for each individual. Treatment outcomes vary by patient. Please consult with the medical team at Catalyst Health & Wellness or your healthcare provider before making any decisions about your care.