When being overweight represents not just a cosmetic, but a medical issue, you need a solution that is predictable, well-tolerated, and proven.
Even though newer weight-loss injections with semaglutide, such as Wegovy, are currently receiving a lot of attention, Saxenda with liraglutide remains a serious treatment option, especially for people with comorbidities. This is because Saxenda has been approved for years and offers a gentle introduction to medication-assisted weight loss—thanks to its daily dosing.
What is Saxenda and how does it work?
The active ingredient in Saxenda mimics the body's own hormone GLP-1, which, among other things, increases the feeling of satiety, delays stomach emptying, and thus reduces appetite. As a result, you naturally consume fewer calories without constantly having to starve.
Important: Saxenda is not a substitute for a healthy diet or exercise, but a medical support when other measures alone are not sufficient.
Saxenda administration – a common misunderstanding?
The term "administration" (in German: "Einnahme," which often implies oral intake) has become common in everyday language, but it is not entirely accurate medically. Even though people often talk about "taking Saxenda," it is not a tablet or capsule. This means: You do not take Saxenda orally, but administer it yourself using a pre-filled pen—similar to insulin.
Saxenda application: How to use the weight-loss injection correctly
Saxenda is injected subcutaneously once daily, meaning directly into the subcutaneous fatty tissue—not into a muscle or vein. Administration is carried out with a pre-filled pen, which was specially developed for simple self-administration.
The injection is straightforward and can be done comfortably at home—similar to insulin. It is important that you take the injection at the same time every day to ensure a consistent level of the active ingredient.
Daily Saxenda application: Effort or advantage?
Saxenda is injected once daily, regardless of the time of day or meals. Consistent application at the same time of day achieves a steady level of the active ingredient.
What might initially sound like more effort can prove to be an advantage, especially for people with pre-existing health conditions: the daily injection allows for finely graduated dose increases, better control of potential side effects, and a slow adjustment to the target amount. This way, the treatment can be customized—which is particularly important if other medications are already being taken or if the metabolism is sensitive.
Saxenda pen application – step by step
- Attach the needle: Remove the protective film from a new needle and screw it onto the pen.
- Check the pen: Prime every new pen before its first use (flow check).
- Select the dosage: Turn the dose selector to the desired amount (see dosing schedule below).
- Administer the injection: Gently pinch the skin with one hand, hold the pen vertically, and insert the needle.
- Trigger the injection: Press the button down completely and hold it for at least 6 seconds.
- Remove and dispose of the needle.
You can perform the injection in the following areas:
- Abdomen (at least 2 cm away from the navel),
- Thigh (front side),
- Upper arm (outer back side).
Important notes on Saxenda application:
- The time of injection is flexible but should remain the same every day.
- Do not inject into a vein or muscle!
- Rotate the injection site regularly to avoid skin reactions.
- Use a new, sterile needle before every application.
Saxenda "KwikPen" or pre-filled pen: What is the difference?
The term "Saxenda KwikPen" is incorrect. The official name is simply "Saxenda Pen" or "Saxenda pre-filled pen." "KwikPen" is a protected designation for other products such as Mounjaro or Ozempic.
The Saxenda pen is a pre-filled injector containing 3 ml of solution (6 mg/ml liraglutide). It allows for flexible dosing from 0.6 mg to 3.0 mg per day. It is used with NovoFine® 32G needles.
Contents of the pre-filled pens
- 1 ml injection solution = 6 mg liraglutide
- 1 pen = 3 ml = 18 mg liraglutide
Each pen has a dose indicator for precise setting of the desired amount
Saxenda dosage for weight loss – gradual increase
The Saxenda dosage is increased slowly to gently accustom the body to the active ingredient liraglutide. This approach reduces the risk of typical initial discomforts such as nausea or gastrointestinal issues and improves tolerability. The goal of the treatment is the daily maintenance dose of 3.0 mg – this is usually reached from the 5th week onwards.
Saxenda dosing schedule:
This information will help you to plan your pen requirements better – especially from week 5, when consumption increases significantly. From week 5, the 3.0 mg dose should be maintained. A month at the maintenance dose (3.0 mg) generally requires five pens.
Setting the Saxenda dosage – preparation tips
- Read the package leaflet carefully.
- Speak with your doctor about individual adjustments.
- Use reminders (app/calendar) so you don't forget your daily application.
What happens if you accidentally double the dose?
If you accidentally inject a double dose of Saxenda, you should seek medical advice. An overdose can lead to gastrointestinal issues. In severe cases, more serious symptoms such as severe fluid loss or electrolyte imbalances may occur.
An accidental double dose should not happen regularly. If you have trouble keeping track of your injections, tools like medication apps or calendar reminders can be helpful to ensure correct usage.
Saxenda dosage: When does it start working?
Many users report reduced food intake or a faster feeling of satiety within the first few weeks. However, the full effect usually only unfolds once the maintenance dose of 3.0 mg is reached.
Therefore, it is important not to skip the dosage and not to stop prematurely just because no major effect is noticeable at the beginning.
Saxenda dosage: Checking effectiveness
After 12 weeks at 3.0 mg daily, a weight loss of at least 5% should have been achieved. If not, it is advisable to reconsider the therapy.
This recommendation is based on data from clinical studies showing that patients who do not lose enough weight within the first 12 weeks generally do not respond to the medication in the long term. This guideline is supported by health authorities such as the European Medicines Agency (EMA) and other professional organizations. This approach helps to optimize therapy at an early stage and spares patients who do not benefit from Saxenda from unnecessary costs and potential side effects.
What to do if Saxenda doesn't work?
- Analyze diet and exercise
- Use behavioral therapy and/or nutritional counseling
- Possibly switch to other medications (e.g., semaglutide)
- Check alternatives, such as bariatric surgery (in individual cases)
Are there any side effects when using Saxenda?
Read all about the potential issues that can occur when taking Saxenda in our follow-up blog post.
Side effects of Saxenda at which dosage?
The most common side effects of Saxenda occur in the first weeks of treatment – especially during the dose increase. The body first has to get used to the active ingredient, which can cause temporary discomfort.
Increasing Saxenda dosage: What to do in case of side effects?
If you experience noticeable side effects such as nausea or a feeling of fullness at a specific dose step, it is possible to maintain the current dose for longer before increasing it further. This gives your body more time to adapt.
Example: If you experience discomfort at 1.8 mg, you can continue this dose for another week before increasing to 2.4 mg. Important: Always discuss adjustments with your doctor.
If side effects are persistent, very unpleasant, or new, you should inform your doctor. In rare cases, a dose reduction or stopping the therapy may be necessary.
How can you start with Saxenda?
Talk to your doctor about whether GLP-1 medications are suitable for you. Saxenda is suitable for people with a BMI over 30 or over 27 with comorbidities.
Conclusion: Setting the Saxenda dosage correctly – step by step to success
The Saxenda dosage is increased gradually to minimize side effects. Using the pre-filled pen is straightforward if you follow the instructions. Correct dose adjustment and daily application are keys to success.
Any more questions about Saxenda application or dosage? Then contact your doctor or talk to us.
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