Saxenda is liraglutide at 3.0 mg, injected under the skin every day, approved for weight management back in 2014. It reaches its full dose in five weeks, which is far quicker than the weekly drugs manage — each daily dose contributes less accumulated exposure, so the gut catches up faster.
The daily rhythm is the whole character of this drug, and it cuts both ways.
The ladder
| Week | Daily dose | What it is |
|---|---|---|
| 1 | 0.6 mg | A run-up. Below the level that does anything for weight; it is there for your stomach. |
| 2 | 1.2 mg | A treatment dose for diabetes under the Victoza name. |
| 3 | 1.8 mg | Victoza's ceiling. Appetite usually shifts noticeably around here. |
| 4 | 2.4 mg | One below maintenance. Stay longer if your gut is objecting. |
| 5 onward | 3.0 mg | Full maintenance, and the dose the SCALE trials ran on. |
Patients aged 12 and over follow the same steps, but the climb may be stretched to eight weeks if tolerance is poor, and dropping back a rung is explicitly permitted.
⛔ The three-day rule
This is the part worth reading twice, because it has no equivalent among the weekly drugs.
- Miss one day? Nothing dramatic. Take the next scheduled dose as normal. Do not take extra to compensate and do not raise the dose to catch up.
- Missed three days or more in a row? The label sends you back to 0.6 mg and up the entire ladder again.
The reason is the same short half-life that makes daily injection necessary: roughly 13 hours, against about seven days for semaglutide. Once the drug is out of you, so is your tolerance for it, and walking straight back in at 3.0 mg means walking straight back into the nausea. A long weekend of forgotten pens genuinely does cost you a month.
Practical points
- Daily, not weekly. The single biggest difference from Wegovy, Zepbound and Mounjaro. Any hour of the day, food irrelevant.
- Belly, thigh or upper arm, moved every day rather than weekly — which means seven times the rotation discipline of a weekly drug.
- A week per step, and slowing down is allowed. Speeding up is not.
- Storage: fridge until first use, then 30 days at room temperature or refrigerated, and then it goes regardless.
- Never alongside another GLP-1 — including Victoza, which is the same molecule wearing a different name.
- On insulin or a sulfonylurea? Those doses usually need to come down before this one goes up.
Reasons to stop and call
- Severe abdominal pain that persists, especially through to the back. The label says discontinue if pancreatitis is suspected.
- Right-sided pain under the ribs, fever, yellowing, pale stools. Gallstones and gallbladder inflammation both showed up more on Saxenda than placebo in the SCALE program.
- A day without keeping fluids down, dizziness on standing, dark or scanty urine. Kidney injury follows dehydration.
- A neck lump, hoarseness, difficulty swallowing. The boxed warning covers thyroid C-cell tumors; medullary thyroid carcinoma in your history or family's, or MEN 2, rules the drug out.
- Shaking, sweating, confusion where insulin or a sulfonylurea is also involved.
- Hives, swelling of the face or throat, trouble breathing. Stop and get emergency care.
Whether to be on it at all
Worth saying plainly, because it is the question behind the page. Semaglutide and Saxenda have been compared directly, in a randomized trial published in JAMA in 2022, and it was not close: weekly semaglutide produced roughly twice the weight loss of daily liraglutide over 68 weeks. Real-world adherence also favors a weekly injection over 365 of them.
There are still reasonable grounds to be here:
- You are established on it, tolerating it, and it is working.
- The patient is 12 to 17, where Saxenda has carried a pediatric indication since 2020.
- Your insurance covers liraglutide and not semaglutide — which, given the price gap, is a real argument rather than a lesser one.
- You specifically want a drug that leaves your system in hours rather than a week, should something go wrong.
That last point is the underrated one. A short half-life is a nuisance when you forget a dose and a genuine advantage when you need the drug gone.
What this does not cover
Saxenda specifically — liraglutide at 3.0 mg for weight. Not Victoza, which is the same molecule capped at 1.8 mg for diabetes on a different schedule. Nor pancreatitis workup, pediatric pharmacokinetics, pregnancy (where this drug is contraindicated), fasting before surgery, or use after bariatric surgery.
Where to go next
- All cheat sheets — the full reference library.
- Wegovy dose ladder — where you are going if you switch.
- Pen storage — the 30-day window and how it compares.
- Brand names against molecules — why Saxenda and Victoza are one drug with two labels.