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Hair Loss on Zepbound (Tirzepatide): Week-by-Week Timeline of What to Expect

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Key numbers

  • 4% to 5%Hair loss rate in Zepbound-treated patients, vs 1% on placeboSource: dailymed.nlm.nih.gov, as cited 2026-10-30
  • 7.1%Women on Zepbound reporting hair loss, vs 0.5% of men on ZepboundSource: dailymed.nlm.nih.gov, as cited 2026-10-30
  • 24 studiesStudies in a 2026 systematic review linking hair loss to tirzepatideSource: pubmed.ncbi.nlm.nih.gov, as cited 2026-10-30

At a glance

  • Hair loss rate in Zepbound trials / 4% to 5% vs 1% placebo [1]
  • Women vs men on Zepbound / 7.1% vs 0.5% [1]
  • Label context / associated with weight reduction [1]
  • Discontinuation for hair loss / no Zepbound patient; one placebo patient [1]
  • Subtype most linked to tirzepatide in a 2026 review / telogen effluvium [2]

Does Zepbound cause hair loss?

Hair loss is listed in the Zepbound label as an adverse reaction. In the pooled placebo-controlled weight-reduction trials, hair loss was reported by 5% of patients on 5 mg, 4% on 10 mg, and 5% on 15 mg, compared with 1% on placebo [1]. The label says hair loss was associated with weight reduction and was more frequent in women: 7.1% of women versus 0.5% of men on Zepbound, and 1.3% of women versus 0% of men on placebo [1].

The dose pattern was not a straight line. The 10 mg group had a lower reported rate than the 5 mg and 15 mg groups [1]. No Zepbound-treated patient stopped treatment for hair loss; one placebo-treated patient did [1].

Allanda on why her hair loss came from under-eating, not the drug

Allanda says she lost hair during her GLP-1 weight loss journey and that she has seen it grow back. In her view, the bald spots were not a direct side effect of the medication. She believes they came from malnutrition, because the medication reduced her appetite and she was not getting enough calories or protein. She credits a daily multivitamin with helping her hair recover, and she encourages anyone on a GLP-1 to take one.

Who is speaking?

Allanda. Creator of the Allanda channel, which documents her GLP-1 weight loss journey Background

Episode notes and full video

Is there a week-by-week timeline?

The Zepbound label gives rates in its adverse reactions table, not a schedule for when shedding starts, peaks, or ends [1]. A 2026 systematic review of 24 studies found that telogen effluvium was the hair-loss subtype most frequently linked to tirzepatide and that rapid weight loss emerged as a potential contributor [2]. The review concluded that further studies are needed to establish causality and the temporal relationship [2].

What people on Reddit report

Zepbound and tirzepatide users describing when their shedding started, slowed, and stopped. Their timelines vary widely, and several say recovery took many months.

HardMaybe2345 · Zepbound

With telogen effluvium there is significant lag time between when you stop losing the hair and it starts growing back out.

A commenter says the shedding slowed well before new hair grew back, with recovery taking over a year after a sudden weight loss.

Read the source discussion

minixcakes · Zepbound

My doctor said the timeline can be about a year and a half before I am back to normal density.

A commenter reports thinning started around six months in, and says their doctor expected a long recovery period.

Read the source discussion

Quiet_Test_7062 · Zepbound

I'm at a year now and it definitely slowed down maybe at 9-10 months.

A commenter says the hair loss began around six months, slowed later in the course, and is still not fully back.

Read the source discussion

Pure-Pineapple-6022 · tirzepatidecompound

Once my weight loss stopped so did my hair loss. It's been about two years and my hair is just now filling out again.

A commenter says shedding stopped when weight loss stopped, but full regrowth took a very long time.

Read the source discussion

sameyer21 · tirzepatidecompound

The shedding started around February and just now seems to be slowing down and I see new growth.

A commenter says shedding started months after beginning the drug and only recently began to slow, with new growth appearing.

Read the source discussion

Questions worth asking

Choose the questions you want to keep

What is telogen effluvium?

Telogen effluvium is a diffuse shedding pattern. The 2026 review linked it most frequently to tirzepatide and named rapid weight loss as a potential contributor, particularly for this pattern [2]. The Zepbound label uses the general term hair loss rather than naming telogen effluvium, and it links the reaction to weight reduction [1].

Who reports hair loss more often?

The clearest label signal is sex. Hair loss was reported in 7.1% of women on Zepbound versus 0.5% of men, while placebo rates were 1.3% in women and 0% in men [1]. A cross-sectional survey of 254 GLP-1 receptor agonist users also found that males were less likely than females to report hair loss (adjusted OR 0.36, p=0.003) [3]. That survey included Mounjaro, Ozempic, Saxenda, and Victoza, not Zepbound specifically, and duration of injection use did not significantly predict hair loss [3].

Frequently asked questions

How common is hair loss on Zepbound?
In pooled placebo-controlled trials, hair loss was reported by 5% on 5 mg, 4% on 10 mg, and 5% on 15 mg, versus 1% on placebo [1].
Is hair loss more common in women on Zepbound?
Yes. The label reports hair loss in 7.1% of women versus 0.5% of men on Zepbound, and 1.3% of women versus 0% of men on placebo [1].
Is Zepbound hair loss caused by weight loss?
The label says hair loss was associated with weight reduction [1]. A 2026 systematic review found rapid weight loss may contribute to telogen effluvium with tirzepatide but concluded that causality is not established [2].
Did anyone stop Zepbound because of hair loss?
No Zepbound-treated patient stopped treatment for hair loss in the pooled trials; one placebo-treated patient did [1].

What people actually ask

How long does Zepbound hair shedding last?

No duration is given. The Zepbound label gives no onset, peak, or recovery schedule for hair loss, and a 2026 systematic review of 24 studies concluded that further studies are needed to establish causality and the temporal relationship.

How long after starting the drug did your hair loss start?

No onset timing is established. The Zepbound label gives hair loss rates in its adverse reactions table, not a schedule for when shedding starts, peaks, or ends. The 2026 review said further studies are needed to establish the temporal relationship with tirzepatide.

References

  1. U.S. National Library of Medicine, DailyMed. Zepbound injection (tirzepatide) prescribing information. Zepbound injection (tirzepatide) label
  2. Gupta AK, Teasell EM, Economopoulos V, Mirmirani P. GLP-1 therapies and hair loss: A systematic review of current evidence and implications for counseling. Sci Prog. 2026;109(2):368504261444578. GLP-1 therapies and hair loss: A systematic review of current evidence and implications for counseling
  3. Argobi Y, Jadaan NS, Alshalhoob HB, Alyousef MS, Alotaibi GM, Alwesaibie HS, et al. Predictors and Characteristics of Hair Loss Among Users of GLP-1 Receptor Agonists: A Cross-Sectional Analysis. J Cosmet Dermatol. 2026;25(4):e70835. Predictors and Characteristics of Hair Loss Among Users of GLP-1 Receptor Agonists: A Cross-Sectional Analysis
  4. Reddit participants. Hair loss - confused on timeline for regrowth (r/Zepbound). Accessed 2026-11-10.
  5. Reddit participants. For those of you who had hair loss - what was the timeline like? (r/Zepbound). Accessed 2026-11-10.
  6. Reddit participants. Hair Loss Timeline (r/tirzepatidecompound). Accessed 2026-11-10.
  7. Allanda. My Zepbound Weekly Update: Managing Hair Loss on a GLP-1; Hair Loss & Regrowth. Accessed 2026-11-10.
Evidence overview for Hair Loss on Zepbound (Tirzepatide): Week-by-Week Timeline of What to Expect