Saxenda Dosing Schedule & Injection Guide

The Saxenda dosing schedule

Saxenda isn't a drug you can start at the full dose. The label requires a gradual titration because jumping straight to 3.0 mg causes intolerable nausea and GI side effects in most people. The schedule is a straight climb: add 0.6 mg per week until you reach the 3.0 mg maintenance dose in week five.

What if the side effects are too much at a given step?

The FDA label specifically allows a slower titration. If you're at 1.2 mg and nausea is still brutal, ask your prescriber about staying on 1.2 for another week before moving to 1.8. Adding an extra week at one or two steps is common and reduces the odds of dropping the drug entirely because of side effects. What's not recommended is staying at a sub-maintenance dose long-term — under 3.0 mg, you don't get the full weight-loss effect.

What if I can't tolerate 3.0 mg?

Some patients stabilize at 2.4 mg indefinitely and still get meaningful weight loss. The FDA label allows this off-label adjustment with prescriber oversight. If you can't tolerate 2.4 either, that's usually a sign the molecule isn't right for you and a different GLP-1 (or stopping entirely) is a better path.

The Saxenda pen explained

Every Saxenda pen is a 3 mL prefilled multidose pen that holds 18 mg of liraglutide (6 mg/mL × 3 mL). The pen has four parts you interact with:

• Cap — protects the needle hub between injections.
• Medication window — shows the clear, colorless liraglutide solution. If it looks cloudy or has particles, don't use the pen.
• Dose counter — shows your selected dose (0.6, 1.2, 1.8, 2.4, or 3.0).
• Dose selector and injection button — turn to dial your dose, press to inject.

Saxenda needles

Saxenda pens are designed for NovoFine or NovoTwist needles. Most pharmacies provide a supply at no charge with your prescription. The most common needle is 4 mm, 32 gauge — short and thin enough that most people can barely feel it. Longer needles (5–8 mm) are available but rarely needed for subcutaneous injection.

How to inject Saxenda: step-by-step

1. Wash your hands. Soap and water, 20 seconds.
2. Remove the pen cap. Inspect the cartridge — clear and colorless means good.
3. Attach a new needle. Screw it on tight, remove the two caps (outer and inner).
4. Prime the pen (new pens only). Dial to 0.6 mg, hold pen pointing up, press the button until a drop of liquid appears. This gets air out. Skip priming for subsequent injections with the same pen.
5. Dial your dose. Turn the dose selector until the number in the window matches your current dose (0.6, 1.2, 1.8, 2.4, or 3.0 mg).
6. Pick a site. Abdomen (2 inches from the belly button), front of thigh, or upper arm. Pinch the skin.
7. Insert the needle at 90 degrees. It should be a quick, decisive motion — slow pushing is more uncomfortable than a fast insertion.
8. Press the button all the way down. The dose counter should return to 0.
9. Hold for 6 seconds. Still pressing the button, leave the needle in place for six full seconds. This makes sure the full dose is delivered and nothing leaks back out.
10. Pull out and release. Release the button only after the needle is out of the skin.
11. Dispose of the needle properly. Unscrew and drop into a sharps container. Never reuse needles.
12. Recap the pen and store it per the storage instructions below.

Where to inject Saxenda in the stomach

The abdomen is the most popular injection site because it has plenty of subcutaneous fat and is easy to see. Use the area between your ribcage and hipbones, avoiding a 2-inch circle around the belly button. Rotate daily — left side one day, right side the next, moving up or down each week. Same injection spot used repeatedly causes firm lumps (lipohypertrophy) that can affect absorption and look lumpy under clothes.

How long does a Saxenda pen last?

This is the question that causes the most pharmacy confusion. The answer depends on what dose you're at, because the pen contains a fixed 18 mg of drug regardless of which dose you dial. Here's the math:

At the maintenance 3.0 mg dose, one pen covers exactly 6 days, so a 30-day supply is five pens. That's what the standard Saxenda monthly box contains. Your first month of treatment (during titration) uses far fewer pens than subsequent months, which is why the first box is sometimes advertised as "a month of treatment in one pen."

What if I miss a Saxenda dose?

Liraglutide has a half-life of about 13 hours, so the drug clears quickly compared to weekly GLP-1s. Here's how the label handles missed doses:

• If it's been less than 12 hours since your usual injection time — take the dose now, then continue your normal schedule the next day.
• If it's been more than 12 hours — skip the missed dose entirely. Take your next dose at the usual time. Do not double up.
• If you've missed more than 3 days in a row — contact your prescriber. You'll likely need to restart the titration from 0.6 mg because your tolerance window is short. Restarting at your old dose can cause severe nausea.

Saxenda stopping and restarting

Stopping Saxenda for any reason — travel without a pen, a vacation, feeling "done" with the drug — means losing your tolerance quickly. If you restart more than 3 days later, expect to re-titrate. Most prescribers will walk you back through the full 5-week schedule. It's tedious but it prevents the intense first-week side effects from coming back at full force.

Can I split my Saxenda dose?

No. The label specifies one injection per day at the selected dose. Splitting 3.0 mg into two 1.5 mg doses, for example, changes the drug's pharmacokinetics and may worsen side effects rather than improve them. If 3.0 mg is genuinely too much, the right move is to step back to 2.4 mg with your prescriber's approval, not to split the 3.0 mg dose.

The same rule applies to missed doses and "catching up." You don't combine two days into one injection. You simply skip the missed dose and continue your normal schedule.

Storage and travel

• Unopened pens: refrigerator (36–46°F). Good until the expiration date on the label.
• In-use pens: either refrigerator or room temperature (below 86°F). Good for 30 days from first use, regardless of how much is left.
• Never freeze. A frozen Saxenda pen must be discarded, even if it looks normal after thawing.
• Protect from direct sunlight and heat. Cars parked in the sun are the most common cause of ruined pens.

Traveling with Saxenda

Bring your pens in the original carton in a small insulated cooler bag with a gel pack (not direct contact with ice). TSA allows GLP-1 injectables in carry-on luggage, including the needles — bring a copy of your prescription or pharmacy label in case anyone asks. Do not check your Saxenda in cargo. Cargo hold temperatures can drop below freezing.

Day-to-day routine

Once you're past titration, Saxenda becomes a background habit. Most patients develop a simple routine: same time of day, same injection cycle (abdomen left, abdomen right, thigh left, thigh right, arm), new needle each time, pen in the fridge between doses. A reusable injection log on your phone or an app like Ro or MyFitnessPal makes it easier to keep rotation and consistency on track.

Saxenda dosing FAQs