How To Use Saxenda
Complete Step‑by‑Step Usage Guide, Dosage Instructions & Safety Information
Key Takeaways: Using Saxenda Safely
- Dose escalation is essential: Start at 0.6 mg daily, increase weekly over 5 weeks to 3.0 mg.
- Inject once daily at the same time (any time), subcutaneously in abdomen, thigh or upper arm.
- Always use a new needle for each injection – never reuse.
- Missed dose? If within 12 hours, inject; if >12 hours, skip and resume next day.
- Do not use if pregnant, breastfeeding, or with personal/family history of certain thyroid cancer.
- Combine with diet & exercise – Saxenda is a tool, not a substitute.
Saxenda (liraglutide) is a once‑daily injection that helps you feel fuller and less hungry. Using it correctly is vital for safety and effectiveness. This guide walks you through exactly how to prepare, inject, and store Saxenda, plus who can and cannot use it.
When to seek urgent medical help
Stop Saxenda and contact a doctor immediately if you experience: severe abdominal pain that may reach your back (possible pancreatitis); pain in upper right stomach, nausea, vomiting (gallbladder inflammation); difficulty breathing, swelling of face/throat, fast heartbeat (severe allergic reaction); or signs of kidney problems (reduced urine, metallic taste).
How to take Saxenda: step‑by‑step usage guide
Follow these instructions exactly as shown in the patient leaflet. Your doctor or nurse will also demonstrate.
- Prepare: Wash hands. Pull off pen cap. Check the solution is clear and colourless. If cloudy, do not use.
- Attach a new needle: Remove paper tab, push needle straight onto pen and turn until tight. Remove outer cap (keep for later) and inner cap (discard).
- Check flow (only for new pens): Turn dose selector to the flow check symbol ( ) . Hold pen with needle up, press and hold dose button until counter returns to 0. A drop should appear. If not, repeat up to 6 times; if still no drop, change needle and try once more. If no drop, discard pen.
- Select your dose: Turn dose selector until the dose counter shows your prescribed dose (0.6 mg, 1.2 mg, 1.8 mg, 2.4 mg or 3.0 mg). The dose must line up exactly with the pointer.
- Inject: Choose an injection site (abdomen, thigh or upper arm). Insert needle into a pinched fold of skin. Press and hold the dose button – you will hear/feel a click. Keep the button pressed for at least 6 seconds, then withdraw needle.
- After injection: Carefully recap the outer needle cap, unscrew the needle and dispose of it safely in a sharps bin. Replace the pen cap. Never store the pen with a needle attached.
Rotate injection sites each day to prevent lumps under the skin.
Dosage guide for adults & adolescents
Saxenda is started at a low dose and increased gradually to reduce side effects like nausea.
Weekly escalation schedule (adults and adolescents ≥12 years)
| Week | Daily dose | Notes |
|---|---|---|
| 1 | 0.6 mg | Starting dose – stay on this for one week |
| 2 | 1.2 mg | Increase by 0.6 mg |
| 3 | 1.8 mg | Increase by 0.6 mg |
| 4 | 2.4 mg | Increase by 0.6 mg |
| 5 onwards | 3.0 mg | Maintenance dose – do not exceed 3.0 mg/day |
For adolescents, if the 3.0 mg dose is not tolerated, the maximum tolerated dose (e.g., 2.4 mg) may be continued.
Missed dose
- If you remember within 12 hours of your usual time, inject as soon as possible.
- If more than 12 hours have passed, skip the missed dose and take the next dose at the regular time the next day.
- Do not take a double dose or increase your dose the next day.
Overdose
If you inject more than prescribed, contact a doctor immediately. Overdose may cause severe nausea, vomiting, or low blood sugar.
Who should use Saxenda?
Saxenda is for weight management in addition to a reduced‑calorie diet and increased physical activity.
Adults (≥18 years):
- BMI of 30 kg/m² or greater (obesity).
- BMI of 27 kg/m² to 29.9 kg/m² (overweight) AND at least one weight‑related health problem (e.g., type 2 diabetes, high blood pressure, abnormal cholesterol, obstructive sleep apnoea).
Adolescents (12‑17 years):
- Obesity (diagnosed by a doctor) and body weight above 60 kg.
You should only continue Saxenda if you have lost at least 5% of your initial body weight (adults) or 4% BMI reduction (adolescents) after 12 weeks on the 3.0 mg dose (or maximum tolerated dose).
Who should NOT use Saxenda?
Do not use Saxenda if any of the following apply:
- Allergy to liraglutide or any of the other ingredients (disodium phosphate dihydrate, propylene glycol, phenol, etc.)
- Pregnancy or breast‑feeding (see special conditions).
- Personal or family history of medullary thyroid carcinoma (MTC) or Multiple Endocrine Neoplasia syndrome type 2 (MEN 2).
- Severe heart failure (NYHA class IV) – not recommended.
- Age 75 years or older – not recommended (limited experience).
- Severe kidney problems (including dialysis) or severe liver disease – caution, discuss with doctor.
- Severe stomach problems like gastroparesis (delayed stomach emptying) or inflammatory bowel disease.
Taking Saxenda with food or without food?
You can inject Saxenda at any time of day, with or without food or drink. Choose a time that suits you best and try to be consistent (e.g., every morning or every evening).
If you experience nausea, taking Saxenda with a small meal or snack may help, but this is not required for absorption.
Special conditions and precautions
Pregnancy and breast‑feeding
Do not use Saxenda if you are pregnant, think you might be pregnant, or are planning a baby. It is unknown if Saxenda affects the unborn baby. Do not breast‑feed while using Saxenda – it is not known if liraglutide passes into breast milk.
Surgery
If you are due to have surgery under general anaesthetic, tell your doctor you are taking Saxenda.
Thyroid disease
If you have thyroid nodules or an enlarged thyroid, discuss with your doctor before using Saxenda.
Heart rate
If you feel palpitations or a racing heartbeat while at rest, tell your doctor.
Dehydration
Nausea, vomiting or diarrhoea can cause fluid loss. Drink plenty of water to avoid dehydration.
Interactions with other medicines
- Sulfonylureas (e.g., glimepiride) or insulin: Risk of low blood sugar (hypoglycaemia). Your doctor may adjust your diabetes medication.
- Warfarin or other anticoagulants: More frequent blood clotting tests may be needed when starting or stopping Saxenda.
- Do not use Saxenda with other GLP‑1 receptor agonists (e.g., exenatide, lixisenatide).
Frequently Asked Questions about using Saxenda
What time of day should I inject Saxenda?
You can choose any time that fits your routine, but try to inject at the same time each day (e.g., every morning or every evening) to build a habit.
Can I inject Saxenda in my thigh or arm?
Yes, the best places are your abdomen (at least 5 cm from your belly button), front of thighs, or upper arms. Rotate the site each day to avoid lumps.
What should I do if I miss a dose?
If it's within 12 hours of your usual time, inject it. If more than 12 hours have passed, skip that dose and take your next dose at the normal time the next day. Never double dose.
Can I use Saxenda if I am trying to get pregnant?
No, you should stop Saxenda before you start trying to conceive. Talk to your doctor about alternative weight management approaches.
How long do I need to use Saxenda?
Treatment is typically continued as long as you are losing weight and your doctor recommends it. If after 12 weeks on 3.0 mg you have not lost at least 5% of your body weight, treatment should be stopped.
Ready to start Saxenda safely?
If you meet the BMI criteria and have discussed with your GP, our UK‑registered doctors can guide you through a confidential online consultation.
Secure Prescription & Next‑Day Delivery
MHRA‑compliant | GPhC‑registered pharmacy | Discreet packaging | UK‑registered doctors
Start Weight Loss ConsultationRelated Saxenda Guides
Medical Content Manager
Nabeel is a co‑founder and medical content manager of Chemist Doctor. He works closely with our medical team to ensure the information is accurate and up‑to‑date.
Medical Doctor
Dr. Feroz is a GMC‑registered doctor and a medical reviewer at Chemist Doctor. He oversees acute condition and urgent care guidance.
Medical Director
Usman is a co‑founder and medical director of Chemist Doctor. He leads the organisation’s strategic vision, bridging clinical and operational priorities.
Review Date: 23 February 2026
Next Review: 23 August 2026
Published on: 23 February 2026
Last Updated: 23 February 2026