What to Eat Before and After Ketamine Therapy Sessions

One of the most practical questions patients ask before their first ketamine therapy session is also one of the most important: what should I eat? It may seem like a minor detail compared to the neuroscience of treatment, but getting your nutrition and timing right can make a significant difference in how you feel during and after each session.

Nausea is one of the most common side effects of ketamine therapy, and it is also one of the most preventable. With some straightforward planning around meals and hydration, most patients can minimize or eliminate this discomfort entirely. Here is what I recommend based on clinical experience and what consistently works for my patients.

Why an Empty Stomach Matters

Ketamine can cause nausea, particularly during the first few sessions as your body adjusts to the medication. This nausea is related to ketamine's effects on the vestibular system (your sense of balance and spatial orientation) and its interaction with receptors in the gastrointestinal tract.

Having food in your stomach during a session increases the likelihood and severity of nausea for several reasons.

Gastric distension (a full stomach) can trigger nausea on its own, and ketamine amplifies this sensation. Even a moderately full stomach that would not normally bother you can become uncomfortable during a session.

Delayed gastric emptying. Ketamine can slow the rate at which your stomach empties, meaning food sits in your stomach longer than usual. This prolonged distension contributes to nausea.

Sublingual absorption. For at-home ketamine therapy using sublingual tablets, the medication is absorbed through the tissue under your tongue. Saliva production, which increases when you eat, can dilute the medication and affect absorption. Taking your dose on a relatively empty stomach helps ensure consistent absorption.

For these reasons, I recommend fasting for at least three to four hours before your ketamine session. This does not mean you should skip meals entirely --- it means timing your meals so that your stomach has had time to empty before dosing.

You can learn more about the full session experience on our what to expect page.

Meal Timing: A Practical Schedule

Here is a practical approach to meal timing that works for most patients.

If your session is in the morning (8-10 AM): Skip breakfast before your session. You can have a light meal after your session once the acute effects have resolved, typically one to two hours post-dose. If you are someone who cannot function without morning food, a few plain crackers or a small piece of toast two to three hours before your session is acceptable.

If your session is in the early afternoon (12-2 PM): Have a light breakfast, but avoid eating anything after 10 AM. Your stomach should be mostly empty by session time.

If your session is in the late afternoon or evening (4-7 PM): Have a normal breakfast and a light lunch no later than 1 PM. Avoid snacking between lunch and your session.

The goal is not starvation --- it is simply allowing your stomach to empty. Most light meals clear the stomach within three to four hours. Heavier, fattier meals can take significantly longer.

What to Eat Before (The Pre-Session Meal)

Your last meal before a ketamine session should be light, easy to digest, and low in fat. Here are good options.

Plain toast or crackers. Simple carbohydrates are easy on the stomach and digest quickly. Whole grain options provide a bit more sustained energy without being heavy.

A small portion of rice or oatmeal. These are bland, easy-to-digest options that provide energy without weighing you down.

A banana. Gentle on the stomach, provides potassium and natural sugars for energy, and digests relatively quickly.

A small serving of lean protein. A few ounces of chicken breast, turkey, or a couple of eggs. Keep portions modest --- this is not the meal to load up on protein.

Clear broth or soup. Provides hydration, electrolytes, and warmth without the bulk of a heavy meal.

What to avoid in your pre-session meal:

• Greasy, fried, or heavily processed foods
• Large portions of red meat or rich dairy
• Spicy foods that might cause acid reflux
• Acidic foods like tomato sauce or citrus (these can aggravate nausea)
• Heavy cream-based sauces or dishes
• Anything that typically upsets your stomach

Think of it this way: eat something you would feel comfortable eating before a boat ride on mild seas. If you would not want it rocking around in your stomach, it is not the right pre-session meal.

Hydration: More Important Than You Think

Proper hydration is one of the simplest things you can do to improve your ketamine therapy experience, and it is also one of the most commonly overlooked.

Before your session: Drink water steadily throughout the day leading up to your session. Aim for your usual intake, but make a conscious effort not to fall behind. Dehydration increases the risk of nausea, headache, and dizziness during treatment.

Timing caveat: Stop drinking large amounts of fluid about 30 minutes before your session. You do not want to need to use the bathroom during the acute phase of your treatment, and a full bladder can be distracting.

During your session: Have a small glass of water nearby. You may want small sips, particularly after the sublingual tablet has fully dissolved. Do not drink large amounts during the session.

After your session: Resume normal hydration. Many patients feel slightly dehydrated after a session, so gentle rehydration with water or an electrolyte drink can help you feel better more quickly.

What to avoid for hydration:

• Caffeine in excess (it is a diuretic and can increase anxiety)
• Alcohol (never combine with ketamine --- see our safety guidelines)
• Sugary sodas or energy drinks
• Large amounts of juice (the sugar content can contribute to nausea)

Post-Session Eating: Comfort and Recovery

After your session, once the acute effects have subsided (typically one to two hours), you can eat. Most patients find that their appetite returns gradually, and many describe a specific kind of hunger --- not ravenous, but a gentle desire for something comforting and grounding.

Good post-session foods:

Warm broth or soup. Many patients gravitate toward warm, savory liquids after a session. Chicken soup, miso soup, or a simple vegetable broth can be both nourishing and soothing.

Toast with a mild topping. Plain butter, a thin layer of nut butter, or a small amount of avocado. Keep it simple until you know how your stomach responds.

A bowl of rice or congee. Particularly soothing if you are still feeling any residual stomach sensitivity.

Fresh fruit. Watermelon, melon, berries, or grapes are hydrating and gentle. Avoid citrus if you are feeling any lingering nausea.

Crackers with cheese. A small, simple combination that provides both carbohydrates and protein without overwhelming your stomach.

A smoothie. If you do not feel like chewing, a simple smoothie made with banana, a handful of berries, and yogurt or a non-dairy alternative can provide nutrition in an easy-to-digest form.

What to avoid immediately after a session:

• Heavy meals (give yourself time to ease back into eating)
• Alcohol (for at least 24 hours after treatment)
• Very spicy or acidic foods
• Large amounts of caffeine

Managing Nausea If It Occurs

Even with perfect meal timing and food choices, some patients experience nausea during their first few sessions. This typically improves as your body adjusts to the medication. Here are strategies that help.

Ginger. Ginger tea, ginger chews, or ginger candies before and during a session can help settle the stomach. Ginger has well-documented anti-nausea properties.

Peppermint. Peppermint tea or simply smelling peppermint oil can reduce nausea. Some patients keep a peppermint tea bag nearby to sniff if needed.

Anti-nausea medication. If nausea is a recurring issue, we can prescribe an anti-nausea medication such as ondansetron (Zofran) to take before your session. This is effective and does not interfere with ketamine's therapeutic effects.

Positioning. Lying still with your eyes closed reduces vestibular stimulation, which is a primary driver of ketamine-related nausea. Avoid sudden head movements during the acute phase of your session.

Cool air. A cool room or a gentle fan can help. Heat tends to worsen nausea for most people.

Understanding the full cost of treatment at Tovani Health helps you know that medications like anti-nausea prescriptions, when needed, are part of your physician's standard care.

Building Your Personal Routine

Over the course of your first few sessions, you will develop a personal routine that works for your body. Some patients find they can tolerate a slightly larger pre-session meal than I initially recommend. Others discover they are more sensitive and prefer a longer fasting window. Pay attention to how your body responds and adjust accordingly.

The patients who have the smoothest treatment experiences are those who prepare in advance. Stock your kitchen with gentle pre- and post-session foods before you begin treatment. Have ginger tea or chews on hand. Set up your session space with water nearby. These small preparations add up to a significantly more comfortable experience.

If you are ready to begin at-home ketamine therapy and want to make sure your first session goes as smoothly as possible, check your eligibility with Tovani Health. We will guide you through every practical detail, from what to eat to how to set up your space, so you can focus on what matters most --- feeling better.