Zepbound and hair loss: what the label says and how to care for shedding hair

What the Zepbound label says

The U.S. prescribing information for Zepbound (revised August 2026, the version we checked on October 31, 2026) lists hair loss among the adverse reactions seen in its main weight-management trials.

Here's what the label reports:

The label adds one important line: hair loss in people taking Zepbound "was associated with weight reduction." In other words, it seems linked to losing weight, not to the medicine damaging your hair directly. Researchers are still studying this, though.

Keep in mind that trial percentages describe groups of people, not what will happen to you. Trials also count anyone who reports hair loss, from mild extra shedding to more noticeable thinning. Your own odds may depend on things like your sex, how fast you lose weight and your hair history.

Why it happens

The AAD's guide to GLP-1 drugs, which covers tirzepatide and Zepbound, gives three possible reasons:

1. Fast weight loss. Dermatologists believe the main cause is the sudden weight loss. Losing hair after a stressful event or a change in your health is called telogen effluvium.
2. Eating less. Because you eat less on these drugs, your body may miss some of the protein, vitamins and nutrients that support hair growth.
3. A possible direct effect. The AAD says GLP-1 drugs may also directly affect hair and cause it to stop growing. More research is needed to know for sure.

The AAD is clear that researchers need more information to say exactly why it happens.

Shedding versus true hair loss

These two can look the same in your hairbrush, but they behave differently.

The AAD says it's normal to shed 50 to 100 hairs a day. When you shed a lot more than that, it's called excessive shedding, or telogen effluvium. It often shows up a few months after a stressor, like a big weight change or an illness. As your body readjusts, shedding stops, and the AAD says hair tends to regain its normal fullness within six to nine months.

True hair loss is different. It happens when something stops hair from growing, and hair won't regrow until the cause is dealt with. Hereditary thinning, for example, usually continues without treatment.

A dermatologist can tell you which one you have. Some people have both. Our guide to telogen effluvium explains the shedding cycle in more detail.

Shedding often tracks with how fast your body is changing and how well you're eating. Olive is a health companion that checks in with you every day, looks at what you eat, and helps you build small habits that actually hold. It doesn't diagnose or treat anything, so hair questions still belong with a dermatologist.

Who's more likely to notice it

Based on the label and the AAD, you may be more likely to notice shedding if:

• You're a woman. In the label's pooled trials, hair loss was reported in 7.1% of women on Zepbound versus 0.5% of men.
• You're losing weight quickly. The label ties hair loss to weight reduction, and the AAD points to sudden weight loss.
• You're eating much less. Missing protein and nutrients can affect hair growth, the AAD says.
• You already have hair loss. If you're prone to thinning, the AAD suggests talking to a dermatologist before you start.

What you can do

Talk to your prescriber before changing anything. The AAD warns that serious side effects can happen if you suddenly stop a treatment or drug. If you think a medicine is behind your hair loss, talk with your doctor first.

See a dermatologist. The AAD says the best first step is getting the exact type of hair loss diagnosed. If you haven't started yet, tell your dermatologist you plan to take a GLP-1 so they can adjust any hair treatments and keep an eye on changes.

Ask about the pace. One dermatologist quoted by the AAD says patients prone to hair loss should lose weight slowly on these drugs. Ask your prescriber whether your pace makes sense for you.

Eat enough. The AAD says that not getting enough iron or protein can lead to hair loss, and eating too few calories every day can cause significant hair loss. Protein at each meal is a good habit to build.

Be careful with supplements. The AAD notes that hair supplements aren't regulated for safety or effectiveness before they're sold, and too much selenium, vitamin A or vitamin E has been linked to hair loss. Ask your doctor whether a blood test makes sense before adding anything.

Gentle hair care while you shed

Thinning hair is fragile and breaks easily. The AAD recommends these steps for people with hair loss:

• Use a gentle shampoo and a moisturizing conditioner after every wash.
• Use a leave-in conditioner or detangler to cut down on breakage.
• Wrap wet hair in a microfiber towel so it dries faster and you need less heat.
• Limit flat irons, curling irons and hot combs to special occasions.
• Skip at-home coloring, perms, straightening and relaxing for now.
• Avoid tight buns, ponytails, braids or cornrows, which can cause traction alopecia.
• Brush and comb gently, and try to stop twisting or pulling your hair.

For a full routine, see our gentle hair-care routine while you're shedding and our guide to shampoo for thinning hair. For the bigger picture on these drugs, start with our GLP-1 hair loss guide.

When to see a doctor

See a board-certified dermatologist if:

• Shedding goes on for more than six months or keeps getting worse
• You see bald patches, a widening part or a receding hairline
• Hair loss comes with other symptoms, like fatigue or skin changes
• You're worried at all. The AAD says the sooner a cause is found, the better your chance of good results.

This guide is general information, not medical advice. Don't stop or change a prescribed medicine on your own, and talk with your doctor or a dermatologist about hair changes.

Frequently asked questions

Does Zepbound cause hair loss?

Hair loss is a listed side effect. In the label's trials, about 4% to 5% of people on Zepbound reported it, versus 1% on placebo, and it was linked to weight reduction.

Is hair loss on Zepbound permanent?

It usually isn't. The AAD says shedding after a big body change tends to stop as your body readjusts, with fullness often back within six to nine months.

Why is hair loss more common in women on Zepbound?

The label reports it in 7.1% of women versus 0.5% of men but doesn't explain why. Ask your doctor or a dermatologist about your own risk.

When does hair shedding start after starting Zepbound?

The AAD says excessive shedding usually shows up a few months after a stressful event or body change, such as rapid weight loss.

Should I stop Zepbound if my hair is falling out?

Don't stop on your own. Talk with your prescriber. In the label's trials, no one on Zepbound stopped because of hair loss.

How can I protect my hair while taking Zepbound?

Eat enough protein, ask about a slower pace of weight loss, use gentle hair care, and see a dermatologist to confirm what type of hair loss you have.

Support your hair from the inside out

Steady meals with enough protein help your body through big changes. Olive checks in with you every day and notices what's keeping your body stuck.

If steady habits haven't moved stubborn weight, Olive's Protocol is one option to look into.

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