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Side effect · Saxenda

Dizziness on Saxenda

Feeling lightheaded when you stand up on a GLP-1 can be a quiet sign you are not drinking enough.

Clinician review pending Updated
On Saxenda
7%
label rate
On placebo
5%
same trials
Extra vs placebo
up to 2points
attributable to the drug, roughly

Placebo-controlled weight-management trials in the Saxenda label (3 mg).

Dizziness across GLP-1 medicines

Wegovyplacebo 4%
8.0%
Saxendaplacebo 5%
7.0%
Zepboundplacebo 2%
5.0%
Highest rate across label doses. Different trials and populations, so compare with care.

Why it happens

Eating and drinking less, plus fluid loss from vomiting or diarrhea, can lower blood volume. That can make you lightheaded, especially when you stand up fast.

Weight loss can also lower blood pressure, which is often welcome but may mean blood pressure medicines need review. People on insulin or sulfonylureas can feel dizzy from low blood sugar.

When it starts and fades

Dizziness tends to appear in the early weeks or after dose increases, when intake drops and stomach side effects peak.

If it starts later, after significant weight loss, ask whether your blood pressure or diabetes medicines need review.

What helps

  • Drink fluids steadily through the day, not just at meals.
  • Stand up slowly, especially in the morning.
  • Do not go many hours without eating.
  • Check your blood pressure at home if you have a cuff and share readings with your prescriber.
  • If you have diabetes, check your blood sugar when dizzy if you have a meter.

Other Saxenda side effects

Common questions

How common is dizziness on Saxenda?

In the trials behind the label, 7% of people on Saxenda reported it, vs 5% on placebo.

Is dizziness a side effect of Wegovy?

Yes, dizziness is listed among the label's reported reactions. Dehydration and low intake are common contributors.

Can GLP-1 drugs lower blood pressure?

Weight loss often lowers blood pressure. If you take blood pressure medicine, your prescriber may want to review the dose as you lose weight.

What should I do if I feel dizzy after my shot?

Sit or lie down, sip fluids and eat something small. If it is severe, keeps happening or comes with other symptoms, contact a clinician.

Sources

  1. Saxenda prescribing information (FDA label on DailyMed)
  2. SCALE Obesity and Prediabetes trial publication

Clinician review pending. Drafted from primary sources and waiting for sign-off by a licensed clinician (MD, DO or PharmD) before launch. Every number is checked against its source. Drug facts are re-checked quarterly, prices monthly and whenever a label changes. How we review · Report an error