Retatrutide

Retatrutide is given as a weekly subcutaneous injection into the abdomen, outer thigh, or upper arm — follow your prescriber's instructions on technique. Rotating your injection site each week (e.g. left abdomen → right abdomen → left thigh) helps prevent skin irritation, lumps, or hardening at the injection site. Keep a simple log or diagram to track where your last injection was. If you notice unusual redness, swelling, or pain at any site, let your prescriber know.

Injecting medication straight from the fridge can cause stinging and discomfort at the injection site. Take your pen or syringe out of the fridge 20–30 minutes before your scheduled injection time and leave it on a clean surface away from direct sunlight. Do not warm it in hot water or a microwave — room temperature is all that's needed. This simple step can make your weekly injection noticeably more comfortable.

Slowed gastric emptying means your satiety signal arrives later. Putting down the fork every few bites and pausing gives your brain time to catch up — most participants who tolerate the medicine well found their portions shrank gradually rather than all at once.

Phase 2 trials used a prescriber-led titration. Skipping doses to ease side effects, or jumping ahead to a higher dose, both increased adverse events in the trial data. Talk with your prescriber before changing anything.

Choosing the same day each week — say, every Sunday morning — helps build the habit and makes it easier to plan around any side effects. Many people choose a day when they have a lighter schedule the following day, in case nausea is present. Set a phone reminder if it helps. Always follow your prescriber's instructions if your scheduled day needs to change.

Drinking a large glass of water quickly can trigger or worsen nausea, especially in the early weeks. Instead, aim to sip water consistently throughout the day — small amounts, often. A 600 mL bottle at your desk or on your bench is a great visual reminder. Herbal teas like ginger or peppermint count toward your daily intake and may also settle an uneasy stomach.

A weekly medicine is easier to remember when it is tied to the same day each week. If you miss a dose, there are published rules for how long after the scheduled day you can still take it — your prescriber or trial site will provide them.

With a reduced appetite, every bite needs to work hard for you. Make protein the first thing you reach for — a few bites of chicken, some cottage cheese, eggs, or legumes — before moving to other parts of the meal. This helps ensure you're hitting your protein targets even on low-appetite days. A general guide is aiming for around 1.2–1.6 g of protein per kilogram of your body weight daily, but speak with your prescriber or a dietitian for personalised guidance.

Aiming for roughly 1.2–1.6 g of protein per kg of body weight daily helps preserve lean mass while you lose fat. If your appetite is small, protein-first plating (protein before carbs or vegetables) helps.

Retatrutide slows how quickly food leaves your stomach, which means fullness can arrive faster and more intensely than you're used to. Serve yourself smaller portions than you think you need, eat slowly, and pause between bites. Stopping at 'satisfied' rather than 'full' will help you avoid uncomfortable nausea and bloating after meals. Using a smaller plate can be a surprisingly effective way to recalibrate portion size.

You don't need to join a gym or run 5 km to support your progress — a 15–20 minute walk after dinner is a genuinely meaningful starting point. Movement helps with digestion, mood, and maintaining muscle mass during weight loss. As your energy improves over the coming weeks, aim to increase duration or add a second walk per day. Apps like Google Maps can help you measure distances in kilometres if you'd like to track your walks.

When the body loses weight, it can lose muscle alongside fat — resistance training (bodyweight exercises, resistance bands, or weights) helps minimise this. You don't need to be experienced; simple exercises like squats, wall push-ups, and step-ups are a great beginning. Aim for two sessions per week and build from there. If you're new to exercise, a single session with an exercise physiologist can set you up with a safe, personalised routine.

Sleep plays a direct role in appetite regulation, energy, and metabolic health — poor sleep can increase hunger hormones and undermine your progress. Try to keep a consistent bedtime and wake-up time, even on weekends. Avoid screens for 30–60 minutes before bed and keep your bedroom cool and dark. If sleep has been a long-standing challenge, it's worth raising with your prescriber as part of your overall health plan.

The number on the scales tells only part of the story — and in the early weeks, it may not move much at all. Track other meaningful markers: how your clothes fit, your energy levels throughout the day, how far you can walk, your sleep quality, and how you feel about your food choices. Consider keeping a brief weekly journal — even three or four sentences — to capture these non-scale wins. Progress is rarely linear, and the full picture is worth seeing.

Some weeks will feel harder than others — nausea, fatigue, slow progress, or simply life getting in the way. These are normal parts of the journey, not signs of failure. Reaching out to a friend, a support community, or a health professional on tough days is a sign of strength, not weakness. Remember: you are doing something meaningful for your long-term health, and every week you show up counts.