Saxenda Dosage Guide

A woman sitting at a kitchen counter holding a blue Saxenda pen, with an alcohol wipe resting on her knee and a notebook and recipe book behind her.
Illustrative photograph. PenCompare is an independent comparison platform and is not a pharmacy or a prescriber.

Saxenda is not taken at one fixed strength. Treatment starts low and the dose is raised in stages until it reaches the maintenance dose. The pattern is the same idea as the weekly pens, but it runs on a much shorter clock — most people are at full strength within about five weeks.

Important: This page describes the general pattern of treatment for information only. It is not a dosing instruction and not medical advice. Your dose, and when it changes, is decided by your prescriber. Always follow the schedule you were given and the patient information leaflet supplied with your pen.

On this page

Why the dose climbs in steps

The step-up is not an administrative formality or a way of selling more pens. It is how the side effects are kept manageable. Going straight to a high dose makes nausea and the other gastrointestinal effects far more likely, and someone who feels unwell in week one is someone who stops in week two.

  1. Start The first dose is not meant to be the one that does the work. It gives the body time to get used to the medicine, which is why the opening weeks can feel like little is happening.
  2. Step up The prescriber raises the dose in stages, holding each one long enough to see how it is tolerated. A step can be held longer, or not taken at all, if side effects need it.
  3. Settle Many people stay on a dose below the maximum, because it is working and is comfortable. The highest dose is a ceiling, not a target.
Drawn as a sequence because that is what it is. The ladder manages side effects; it is not a countdown to the top. Where you stop on it is a prescriber’s decision made with you, and it is not the same for everyone.

The strengths and the usual pattern

Saxenda is taken every day, and the dose is stepped up once a week rather than once a month. Each step adds 0.6mg, which brings treatment to the maintenance dose after around five weeks:

  • 0.6mg — week 1, daily, the starting dose
  • 1.2mg — week 2, daily
  • 1.8mg — week 3, daily
  • 2.4mg — week 4, daily
  • 3mg — week 5 onwards, daily, the maintenance dose

Read that as the shape of a typical course, not as a timetable you are meant to keep to. If a step causes side effects that have not settled, the prescriber may hold it for another week rather than moving on. All five strengths are delivered from the same pen, which is dialled to the dose you are on rather than replaced each time.

If you are weighing Saxenda against the weekly pens, the pace is the clearest difference. Mounjaro and Wegovy hold each step for four weeks and take four to five months to reach full strength. Saxenda holds each step for one week and gets there in about five.

What this means for what you pay

The short step-up has a consequence worth understanding before you compare prices. With the weekly pens, the low starting strengths cover the first few months, so the price you compare at the start is the price you actually pay for a while. With Saxenda you are at the maintenance dose within about five weeks — so the starting-dose price is barely relevant to what treatment costs you.

The practical rule: compare Saxenda at the maintenance dose, because that is what almost the whole course costs. Our Saxenda price comparison lets you select the dose and see the complete cost at that strength, including consultation and delivery fees.

A daily pen also empties faster than a weekly one, so how long a supply lasts is worth checking as well as what it costs. Two providers quoting a similar figure may not be quoting for the same number of weeks of treatment.

Where the injection goes

Saxenda is injected under the skin, once a day, at roughly the same time each day. It can be taken with or without food. The three sites used are the stomach, keeping clear of the area immediately around the navel, the front of the thigh, and the upper arm. Rotating between sites matters more here than with a weekly pen, simply because you are injecting seven times as often.

Beyond that, this page is not the right place to learn the technique. The patient information leaflet in your box is written for the exact pen you have been given, and your pharmacist will go through it with you if you ask. That is a better source than any website, including this one.

If you miss an injection

A daily medicine gets missed more often than a weekly one, so this is worth knowing in advance rather than looking up in a panic. The guidance in the patient information leaflet turns on how long ago the dose was due. Broadly: if it is within about twelve hours, it is normally taken as soon as it is remembered. If longer than that, the missed dose is normally skipped and the next one taken at the usual time the following day. Doses are not doubled up to catch up.

Missing three days or more is a different situation. The tolerance built up during the step-up fades, so restarting at your usual dose can bring the side effects back. Treatment may need to begin again from the starting dose, and that is a decision for your prescriber.

We have summarised that so you know roughly what to expect, not so you can act on it from here. Check the leaflet that came with your pen, and if you are unsure, ask your pharmacist or prescriber — it is a short conversation and they would far rather have it.

Frequently asked questions

There is no single correct time, and it can be taken with or without food. What matters is picking a time you can realistically keep to every day, because consistency is the whole difficulty with a daily medicine. Attaching it to something you already do without thinking tends to work better than relying on remembering.

Because it is taken daily rather than weekly, the body meets each new dose seven times in the week it is held, so a week is long enough to see how it is tolerated. The weekly pens only deliver one dose per step, which is why they hold each one for four weeks. It is a difference in schedule, not in caution.

The maintenance dose, in almost every case. The step-up lasts about a month, so the starting strengths account for a small fraction of what a course of treatment costs you. Comparing at the starting dose gives a figure that stops describing your situation after four weeks.

Speak to your prescriber or pharmacist rather than rationing what you have. Spacing daily injections further apart to make a pen last is a change to your treatment, not a workaround, and a gap of a few days can mean restarting from a lower dose. Ordering with enough time before you run out is the part within your control, and a daily pen leaves less margin for a delayed delivery than a weekly one.

Sources