Victoza is a daily injection. You take it once every day, not once a week. This is one of the most common points of confusion with GLP-1 medications, since some newer options in the same drug class (like Ozempic and Wegovy) are dosed weekly. Victoza’s active ingredient, liraglutide, has a shorter duration of action that requires daily dosing to maintain steady levels in your body.
Why Victoza Requires Daily Dosing
Liraglutide, the drug inside a Victoza pen, stays active in your bloodstream for about 13 hours. That’s dramatically longer than the natural gut hormone it mimics, which breaks down in less than two minutes. But it’s still far shorter than weekly alternatives. Ozempic’s active ingredient, semaglutide, has a half-life of about 168 hours (a full week), which is why it only needs a single weekly injection.
Liraglutide lasts long enough for once-daily dosing because the drug molecules clump together at the injection site, slowly releasing into your bloodstream, and then bind tightly to proteins in your blood that protect them from being broken down. But those 13 hours aren’t enough to carry you through multiple days, so a daily injection is necessary.
How the Dose Increases Over Time
You don’t start on the full dose. Victoza uses a gradual ramp-up schedule to reduce nausea and other stomach-related side effects:
- Week 1: 0.6 mg once daily. This is a starter dose, not a treatment dose.
- Week 2 onward: 1.2 mg once daily.
- If needed: After at least another week at 1.2 mg, the dose can increase to 1.8 mg once daily, which is the maximum.
For children aged 10 and older, the same starting dose applies, but increases happen in 0.6 mg steps with at least a week between each bump. The maximum is still 1.8 mg daily.
When and Where to Inject
One of the convenient aspects of Victoza is its flexibility. You can take it at any time of day, with or without food. The key is consistency: once you find a time that works, stick with roughly the same time each day. Morning, evening, before dinner, after breakfast, it doesn’t matter as long as you’re consistent.
The three approved injection sites are the stomach area, the upper thigh, and the upper arm. You should rotate between sites and use a new needle each time. The injection goes just under the skin, not into muscle.
What to Do If You Miss a Dose
If you forget your daily injection, take it as soon as you remember, with one rule: if more than 12 hours have passed since your usual injection time, skip that dose entirely. Just take your next dose at the regular time the following day. Don’t double up to make up for a missed dose.
Victoza vs. Weekly GLP-1 Injections
If daily injections feel like a hassle, it’s worth knowing how Victoza compares to the weekly options. Ozempic (semaglutide) treats type 2 diabetes with a single injection per week. Wegovy, also semaglutide but at higher doses, is a weekly injection approved for weight loss. Both work through the same GLP-1 pathway as Victoza but use a molecule engineered to last much longer in the body.
Victoza is FDA-approved for three purposes: lowering blood sugar in type 2 diabetes, reducing the risk of heart attack and stroke in adults with type 2 diabetes who already have cardiovascular disease, and (under the brand name Saxenda, at higher doses) weight management in adults with obesity. If injection frequency is a deciding factor for you, a weekly alternative may be worth discussing with your prescriber, though the medications aren’t interchangeable and have different dosing, side effect profiles, and insurance coverage.
Storing Your Victoza Pen
An unused Victoza pen belongs in the refrigerator, between 36°F and 46°F. Once you’ve used a pen for the first time, it stays good for up to 30 days. During that window, you can keep it in the fridge or at room temperature (59°F to 86°F). Never freeze a Victoza pen. If it’s been frozen, throw it away.