The FEEL wellness guide

Understand GLP-1 medicines and build everyday habits around food, movement, and safer care.

Concentration and syringe calculator

Use the medicine amount, final liquid volume, and prescribed dose confirmed by your pharmacist or prescriber. Ask them to confirm the syringe type and markings. This tool performs unit conversions and does not choose a dose, a diluent, or a mixing volume.

The line shows the calculated position relative to the syringe capacity you entered. The scale is illustrative. If that position falls between lines on your own syringe, ask your pharmacist which syringe to use before measuring. For a U-100 syringe, 100 markings equal 1 mL. Those markings represent volume here, and the medicine amount is expressed in mg.

See how the maths works

Concentration (mg/mL) = medicine amount (mg) ÷ final liquid volume (mL). Measurement (mL) = prescribed dose (mg) ÷ concentration (mg/mL). If your prescription uses micrograms, ask your pharmacist to confirm the equivalent in milligrams before entering it.

What is GLP-1?

GLP-1 stands for glucagon-like peptide-1, a hormone released in the gut after eating. Medicines that act on its receptor can help regulate blood sugar, slow stomach emptying, and reduce appetite. The effect and approved use depend on the medicine.

GLP-1 receptor agonists: Medicines such as semaglutide and liraglutide act on the GLP-1 receptor.
Dual GIP and GLP-1 receptor agonists: Tirzepatide acts on both receptors. GIP is another hormone involved in the body’s response to food.

Why do mg and mL mean different things?

Milligrams describe the amount of medicine. Millilitres describe the volume of liquid. The same volume can contain different amounts of medicine when the concentration changes.

Make balanced meals easier

Start with a protein, a carb, and vegetables. Add a little fat if the meal needs it, such as olive oil or avocado.

Chicken and rice with broccoli, carrots, or mixed vegetables and a drizzle of olive oil.
Lean mince and potatoes with spinach or green beans. Use a little oil to cook the mince if needed.
Eggs and wholegrain toast with sliced tomato and avocado.

Cook a few portions ahead and drink water regularly throughout the day. If dinner is close to bedtime, keep the portion lighter, including the rice or potatoes. If large meals disturb your sleep or trigger reflux, have your main meal earlier.

Make daily movement count

Walking is a practical way to move more and break up long periods of sitting. Try a short walk after lunch or a walking break between tasks. If you track steps, start from your usual daily average and build gradually at a pace that suits you.

WHO recommends at least 150 minutes of moderate activity per week for adults, plus muscle-strengthening activities on at least two days. Brisk walking can count towards the weekly activity target.

Hygiene for prescribed injections

Ask your pharmacist or nurse to demonstrate how to use your prescribed medicine and device. Follow its instructions for storage, skin preparation, and disposal.

Wash your hands and use a clean, dry work surface.
Use a new sterile needle and syringe or pen needle each time, as appropriate for your device. Never share pens, needles, or syringes, even if the needle has been changed.
Put used needles straight into a sharps container. Ask your pharmacy or clinic how to dispose of a filled container locally.

Know when to get help

Some GLP-1 medicines can cause nausea, diarrhoea, constipation, or vomiting. Seek urgent medical care if you have severe or persistent abdominal pain, or if vomiting keeps you from drinking and you’re showing signs of dehydration, such as very little urine.

Before starting or changing a medicine, discuss your other medicines and health conditions with your prescriber. Ask what to do if you miss a dose or have side effects.