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GLP-1 Decoder

Zepbound Hair Loss: How Common, How Long It Lasts

Yes. In the Zepbound trials, 5% of people on 5 mg had hair loss, against 1% on placebo: about 5 times the placebo rate. It is the eighth most common side effect in that table.

In the Zepbound label
Yes, with a rate
On Zepbound 5 mg
5%
On placebo
1%
Rank in the label table
8 of 16

A quick look at Zepbound

How long it remains in the body
100%50%25%0%05.5 d11 d16.5 d22 d27.5 d50%25%12.5%time after the dose

The half-life of 5 to 6 days means half remains after 5.5 d. Following five half-lives (27.5 d), about 3% is left.

Body weight lost during the main study
SURMOUNT-1: 5 mg weekly15%SURMOUNT-1: 10 mg weekly19.5%SURMOUNT-1: 15 mg weekly20.9%Placebo3.1%

Weight lost during the 72-week SURMOUNT-1 trial was 20.9% of body weight, compared with 3.1% on placebo.

Costs as time goes on
202420252026$1,086.37$0List priceSelf-pay

Monthly prices in US dollars cover list prices and self-pay offers. Each figure comes from the maker's price page.

Sources: FDA label (DailyMed), Eli Lilly 1 2, cnbc.com.

How often it appears with Zepbound compared with placebo

The label trials list Zepbound hair loss for every dose group. The comparison group in that same trial is the placebo.

Zepbound label information on hair loss
Medicine and doseHair lossPlaceboMore than placeboPeople in the trials
Zepbound 5 mg5%1%+4 pointsAdults with obesity or overweight (weight management)
Zepbound 10 mg4%1%+3 pointsAdults with obesity or overweight (weight management)
Zepbound 15 mg5%1%+4 pointsAdults with obesity or overweight (weight management)

Source: Zepbound label (DailyMed).

Comparing Zepbound with other GLP-1s for hair loss

Each label covers its own trials, which used separate groups of people. Treat it as a rough guide.

Foundayo pill forms are also listed in the table.

Hair loss across GLP-1 labels
MedicineHighest rate in the labelDose groupPlaceboPeople in the trials
Zepbound5%5 mg1%Adults with obesity or overweight (weight management)
Foundayo5%17.2 mg2%Adults with obesity or overweight (weight management)
Wegovy3%2.4 mg1%Adults with obesity or overweight (weight management)
OzempicListed, no rate given–––
MounjaroListed, no rate given–––
TrulicityListed, no rate given–––
ByettaListed, no rate given–––
RybelsusNot listed–––
SaxendaNot listed–––
VictozaNot listed–––

Sources: Wegovy label (DailyMed), Zepbound label (DailyMed), Foundayo label (DailyMed).

Source: FDA label (DailyMed).

What the Zepbound label states

Hair loss is mentioned in the label, with this exact wording:

“Hair loss adverse reactions in ZEPBOUND-treated patients were associated with weight reduction.”

Source: FDA label (DailyMed).