GLP-1 Resource Center

Why is my hair falling out on Ozempic?

Hair loss during Ozempic or Wegovy treatment is distressing and rarely discussed before treatment begins. The FDA has reviewed reports of hair loss linked to semaglutide. The mechanism is well described, and there are sensible ways to support your hair through it.

What is happening

The condition is called telogen effluvium. Significant physiological stress, including rapid weight loss and nutritional shortfall, pushes hair follicles prematurely into a resting phase. The shedding typically begins two to three months after weight loss starts, which is why many patients do not immediately connect it to their medication. The trigger occurred months before the shedding.

Why this happens on GLP-1 medications

Three converging factors are discussed in GLP-1 related hair shedding. First, rapid caloric restriction creates the physiological stress that initiates telogen effluvium. Second, reduced food intake lowers intake of the micronutrients hair follicles depend on: zinc, biotin, iron and amino acids. Third, the speed of weight loss on GLP-1 medications tends to be faster than conventional dieting, which can amplify the physiological stress signal to follicles.

The protein connection

Hair is made almost entirely of keratin, a protein. When dietary protein is insufficient during rapid weight loss, the body deprioritises hair production in favour of essential functions. Adequate protein intake matters as much for hair as anything applied to the scalp.

Is it permanent?

Telogen effluvium following rapid weight loss is generally temporary. In acute cases, shedding settles and density recovers over a period measured in months, not weeks, as the follicles cycle back into growth. Hair responds on its own timetable. Anyone promising results on a schedule is selling something the evidence does not support. Persistent or patchy loss is worth taking to a clinician, along with bloodwork for iron, ferritin, thyroid function and vitamin D.

What the evidence supports

Topical peptides. Peptides modelled on signalling molecules such as aFGF, bFGF, IGF-1 and VEGF are included in topical formulas as cosmetic conditioning ingredients. Human evidence for topically applied growth factors and hair is not established, and we do not claim it. See the research behind TAKE for how we describe the evidence.

Rosemary extract. One six-month randomised trial in 100 people with androgenetic alopecia compared rosemary oil with minoxidil 2%. Both groups gained hair count from their own baseline, neither outperformed the other, and there was no placebo arm. That trial used rosemary oil rather than extract, and the population studied was androgenetic alopecia rather than shedding during weight loss.

Saw palmetto. Associated with inhibition of 5-alpha reductase, the enzyme involved in DHT production. Shedding during weight loss is most often telogen effluvium, a response to rapid change rather than a DHT process, so saw palmetto is included as broader scalp and hair support rather than as a targeted answer to it.* Saw palmetto is not suitable during pregnancy, while nursing, or when trying to conceive.

Systemic nutritional support. Zinc and iron are among the micronutrients most affected when overall food intake falls. Biotin is included in TAKE Complete to support nutritional adequacy when food intake is reduced, but there is no good evidence that biotin improves hair in people who are not deficient, and TAKE does not claim it does.

The TAKE approach

TAKE Regrowth is a lightweight 30ml nightly serum applied to the scalp, not swallowed. It is a cosmetic product, not a hair loss treatment. It combines five peptides, all included as cosmetic conditioning ingredients (sh-Polypeptide-11, sh-Polypeptide-1, sh-Oligopeptide-2, sh-Oligopeptide-10 and sh-Polypeptide-9), with rosemary extract and saw palmetto, and is formulated to support the appearance and condition of the scalp.* It also contains soybean germ extract and wheat germ extract, which is worth knowing if you avoid either. It is not suitable during pregnancy or while nursing. TAKE Complete provides zinc at 15mg, which contributes to normal immune function and the maintenance of normal hair.* Its biotin at 300mcg is included to support nutritional adequacy when overall food intake is reduced, not to improve hair. TAKE Complete contains saw palmetto and is not suitable in pregnancy, while nursing, or when trying to conceive. Together the two products form The Renewal System.

These statements have not been evaluated by the Food and Drug Administration. TAKE products are not intended to diagnose, treat, cure, or prevent any disease. Individual results vary. Always speak with your healthcare provider about medication side effects or medical concerns.