What to eat on GLP-1 shot day and the two days after
On shot day, eat small, mild, protein-first meals every 3 hours: Greek yogurt, eggs, cottage cheese, a protein shake, soup with chicken, white fish, toast and crackers alongside. Skip greasy, rich, very sweet and fizzy food and alcohol, and keep drinking through the day. Many people find the day or two after the shot harder than the day itself, so plan for those too.
Below: why the days after a shot often feel different, how to find your own pattern, what to prep the day before, a shot-day menu (86 g of protein) and a low-day menu with grams, and what changes in dose-increase weeks.
Why shot day and the days after feel different
Weekly GLP-1 injections don't act all at once. The drug is absorbed over the following days and reaches its highest level in your blood a day or more after you inject. Here is what the prescribing information says:
| Medication | Highest level after the shot | Half-life |
|---|---|---|
| Semaglutide (Ozempic, Wegovy) | 1–3 days | About 1 week |
| Tirzepatide (Mounjaro, Zepbound) | 8–72 hours | About 5 days |
That may be why many people say their appetite is lowest, and nausea most likely, in the first one to three days after injecting, not in the first hour. It isn't the same for everyone: some people feel nothing different across the week, and some feel worst on the day itself. The labels also say stomach side effects are most common while the dose is being raised.
Both labels say the weekly shot can be taken at any time of day, with or without food. So there is no required meal around the shot. What you eat is about feeling better and still reaching your protein.
Find your own pattern first
For three weeks, write one line a day. It takes 30 seconds and tells you which days to plan as "low days."
| Day | Appetite (1–5) | Nausea (0–3) | Protein, about | Notes |
|---|---|---|---|---|
| Shot day | What you ate, what didn't sit well | |||
| Day 1 after | ||||
| Day 2 after | ||||
| Days 3–6 |
Most people see a clear shape by week three: one to three low days, then a run of better ones. Plan your soft foods for the low days and your cooking, bigger meals and strength sessions for the better ones.
The day before your shot: set up
Low days go wrong when the fridge is empty and nothing sounds good. The day before:
- Boil 6 eggs.
- Make a pot of mild soup with chicken or beans. The chicken and white bean soup in our high protein GLP-1 dinner recipes gives four bowls of about 32 g each.
- Check you have Greek yogurt or skyr, cottage cheese, ultra-filtered milk, 2–3 ready-to-drink protein shakes, crackers or toast, bananas, applesauce or canned fruit, and broth.
- Fill two water bottles for the fridge.
- Eat a normal, balanced day. There's no need to eat extra "before the appetite goes."
A shot-day menu (86 g protein)
Mild, mostly cool, nothing greasy, in five small eating times.
| Time | What to eat | Protein |
|---|---|---|
| 8:00 | ¾ cup plain Greek yogurt with berries | 18 g |
| 10:30 | 1 cup ultra-filtered milk, cold | 13 g |
| 13:00 | Roll-ups: 3 oz deli turkey and 1 slice Swiss cheese, a few crackers, cucumber | 22 g |
| 16:00 | 2 hard-boiled eggs | 12 g |
| 19:00 | A 1-cup bowl of chicken and white bean soup | 21 g |
| Total | 86 g |
If you feel fine, eat your normal day. Keep it plain anyway: shot day isn't the day for a big takeaway or a new rich dish.
A low-day menu for the day or two after
When food sounds bad, aim for a floor of about 60–70 g of protein and plenty of fluid. Cool, soft, low-smell and drinkable foods are usually easiest.
| Time | What to eat | Protein |
|---|---|---|
| 8:00 | A ready-to-drink protein shake with about 20 g, sipped over 30–45 minutes | 20 g |
| 10:30 | ½ cup cottage cheese with applesauce or canned peaches | 13 g |
| 13:00 | 1 cup bone broth (check the label; many have about 9–10 g) and 4 crackers | 10 g |
| 16:00 | Smoothie: a 5.3 oz cup of skyr, ½ cup milk, frozen berries | 19 g |
| 19:00 | 3 oz baked cod or a soft omelette of 2 eggs and 1 egg white, with a little mashed potato | 17–21 g |
| Total | 79–83 g |
If you only manage the first four, you're at about 62 g: a fair floor for a day or two. If low days run longer than that, our guides on what to eat when you're not hungry and what to eat on GLP-1 when nauseous go further.
Foods to lean on, by how you feel
| If you have | Lean on | Go easy on |
|---|---|---|
| Nausea | Cold yogurt, cottage cheese, a shake sipped slowly, eggs, crackers or dry toast with protein, ginger tea | Fried, greasy, very sweet, strong-smelling hot food; big portions; lying down after eating |
| No appetite | Drinkable protein (milk, kefir, shakes, broth), a few bites by the clock every 3 hours | Waiting to feel hungry |
| Reflux or burping | Small meals, eating slowly, finishing 2–3 hours before bed | Fizzy drinks, spicy or fatty food, large late meals |
| Diarrhoea | Fluids with some salt (broth), rice, banana, toast, eggs, white fish | Sugar alcohols in bars and sweets, very fatty meals, a lot of fibre at once |
| Constipation | More water, oats, pears, berries, chia, cooked vegetables, a daily walk | Days of shakes only with no fibre |
For the full list of foods that tend to cause trouble and what to eat instead, see what not to eat on GLP-1.
Should you eat before your shot?
The labels say you can inject with or without food, so there's no rule. Some people prefer to eat a normal light meal first so they aren't trying to eat breakfast on a queasy stomach later; others find it makes no difference. If you feel sick within hours of injecting, try having a small protein meal before, and see if your log changes.
Oral semaglutide (Rybelsus) is different: it has its own rules about taking it on an empty stomach with a little water and waiting before food. Follow its label and your prescriber's instructions.
Morning or evening shot?
The labels allow any time of day. Some people inject in the evening so they sleep through the first hours; others like the morning so they can see how they feel. Since drug levels rise over the next one to three days, the time of day may matter less than which day of the week you pick. Many people choose a day so that their low days don't land on the busiest days of their week. If you want to move your shot day, ask your prescriber how.
Dose-increase weeks
Side effects are most common while the dose is going up. For the week of a new dose:
- Treat the first two or three days as low days, even if you felt fine on the last dose.
- Stock up the day before, as above.
- Don't try new rich foods or eat out that week.
- Drop your strength sessions to an easier version rather than skip them, unless you feel faint or are vomiting.
Fluids on shot day
The labels warn that vomiting and diarrhoea can lead to dehydration, and dehydration to kidney problems. On shot day and low days:
- Sip through the day: a glass when you wake, a bottle by lunch, another by dinner.
- Broth, milk, kefir and protein shakes count as fluid and protein together.
- Ice chips, ice pops or very cold water often go down easier when you feel sick.
- If you're vomiting or have diarrhoea, add some salt: broth, or an oral rehydration drink.
- Skip alcohol on shot day and low days.
Training around shot day
Strength training is what protects your muscle while the weight comes off, so don't drop it, just schedule it. Put your two weekly sessions on your better days, often days 3–6 after the shot. On low days, a 10–20 minute walk, especially after a meal, is enough. Our guide to strength training on GLP-1 shows how to fit two sessions around your shot.
Not sure how much protein your low days are costing you? The free 2-minute protein check gives your daily number and where to make it up.
Common shot-day mistakes
- Eating nothing because you're not hungry, then feeling weak and shaky by evening.
- A big "last meal" the night before or right before the shot. It often sits badly the next day.
- Takeaway on low days because cooking feels like too much. A pot of soup made the day before fixes this.
- Only sweet or starchy comfort food (toast, crackers, juice) all day, with no protein.
- Forgetting to drink when food is the only thing on your mind.
- Planning workouts on your worst day instead of your best ones.
When to call your prescriber
- You can't keep food or fluids down for more than a day, or you feel dizzy, have very dark urine or pass little urine.
- Severe stomach pain that doesn't go away, with or without vomiting, especially if it spreads to your back. The labels list pancreatitis and gallbladder problems as possible risks.
- Signs of low blood sugar (shaking, sweating, confusion) if you also take insulin or a sulfonylurea.
- Your side effects are so strong that you eat very little for most of the week, every week.
- You take birth control pills and use Mounjaro or Zepbound: their labels advise a backup or non-pill method for 4 weeks after starting and after each dose increase, because slower stomach emptying can affect the pill.
Questions people ask
What should I eat after my GLP-1 injection?
Small, mild, protein-first food every few hours: yogurt, cottage cheese, eggs, a protein shake, soup with chicken or beans, white fish, with crackers or toast alongside. Avoid greasy, rich and very sweet food.
Why am I more nauseous the day after my shot than on the day itself?
The drug reaches its highest level in your blood one to three days after the injection, according to the labels, so effects on appetite and the stomach often build over those days. Log your own pattern for three weeks to see which days to plan for.
Do I need to eat before my Ozempic or Mounjaro shot?
No. The labels say you can take it with or without food. A light protein meal beforehand helps some people; try it and see.
How much protein should I eat on shot day?
Your usual target if you can, often 80–120 g. On a rough day, a floor of 60–70 g with plenty of fluid is a fair goal for a day or two.
Can I drink coffee on shot day?
Most people can. If it upsets your stomach, have it after food or switch to a latte, which adds protein.
Should I work out on shot day?
A walk is fine. Save strength sessions for the days you feel better, but keep them to at least two a week.
To find your own protein target and plan your low days around it, take the free 2-minute protein check. More on eating and training on weight-loss medication: all our muscle plan guides, including what to eat in a day on GLP-1.
Sources: US prescribing information for Ozempic and Wegovy (semaglutide: time to maximum concentration 1–3 days, half-life about 1 week, any time of day with or without meals) and Mounjaro and Zepbound (tirzepatide: time to maximum concentration 8–72 hours, half-life about 5 days; oral contraceptives; with or without meals); all four: gastrointestinal side effects during dose escalation, dehydration and kidney injury, low blood sugar with insulin or sulfonylureas, pancreatitis, gallbladder disease. Rybelsus prescribing information (taking oral semaglutide). Mozaffarian D. et al., "Nutritional priorities to support GLP-1 therapy for obesity", joint advisory of ACLM, ASN, OMA and TOS, Am J Clin Nutr, 2025. USDA FoodData Central (protein values). This guide is about food and habits and is not medical advice; keep to your prescriber's advice.