Short answer
It can. Hair loss is listed on the Wegovy prescribing information among the common side effects, meaning it was reported by 5% or more of people in trials. It sits alongside nausea, diarrhea, constipation, headache and fatigue. The label lists it as an adverse reaction; it does not explain the mechanism. If it happens to you, tell your prescriber.
What the label says
Novo Nordisk’s Wegovy prescribing information, revised in June 2026, lists the most common adverse reactions at 5% or more in trials: nausea, diarrhea, vomiting, constipation, abdominal pain, headache, fatigue, indigestion, dizziness, bloating, belching, gas, reflux, hair loss and dysesthesia, a change in skin sensation. Hair loss is on the list because trial participants reported it more often than people on placebo.
What the label doesn’t say
The label records the event, not the cause. Many explanations circulate, from rapid weight loss to nutrition, and we don’t list them here because the label doesn’t. Tirzepatide’s label, for Zepbound, lists a similar set of stomach-led side effects. If hair loss appears after starting either drug, the prescriber is the right person to look at diet, dose and timing.
The side effects that matter more
Every GLP-1 for weight carries a boxed warning for thyroid C-cell tumors, seen in rodents, and is not for anyone with a personal or family history of medullary thyroid cancer or MEN 2. The labels also warn about pancreatitis, gallbladder disease, low blood sugar when combined with insulin, kidney injury from dehydration, severe stomach reactions, and aspiration during anesthesia. Hair loss is common and distressing; those are the ones to watch.
Related questions
Does Zepbound cause hair loss too?
The Zepbound label lists stomach-led side effects as the most common. Hair loss appears in Wegovy’s common-reaction list; check the current Zepbound label for its own list.
Does the hair grow back?
The labels don’t say. That is a question for your prescriber, who can look at your case.
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Sources
Published 2026-09-30 · Last checked 2026-09-30
Educational content, not medical advice. Made for the United States.