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ingestible · for hair loss & scalp health

Pumpkin Seed Oil (for Hair)

Reviewed by the Nimbera editorial team · Last updated May 2026

Cho et al. 2014 Evid Based Complement Alternat Med (PMID 24864154) - Randomized double-blind placebo-controlled trial in 76 men with androgenetic alopecia found 400 mg/day oral pumpkin seed oil for 24 weeks produced 40% mean hair count increase vs 10% in the placebo group (p < 0.001); self-rated improvement and satisfaction scores were also significantly higher (p=0.013 and p=0.003).$14-20/month

How to use

Take 400 mg of pumpkin seed oil in capsule form daily with a meal, divided as 200 mg twice daily or 400 mg once with the largest meal. Use consistently for a minimum of 24 weeks (6 months) before assessing results - the clinical trial ran for exactly this duration. Refrigerate oil capsules after opening to prevent rancidity.

How it works

Pumpkin seed oil is rich in phytosterols (including delta-7-sterine) that are thought to inhibit 5-alpha-reductase, reducing DHT levels in scalp tissue. It also contains zinc, vitamin E, and omega-6 and omega-9 fatty acids that support follicle nutrition and reduce oxidative stress.

Where to buy

NOW Pumpkin Seed Oil 1,000 mg (~$14 / 100 softgels), Organic Pumpkin Seed Oil by Nature's Craft 1,000 mg (~$18 / 90 softgels), Sports Research Pumpkin Seed Oil 1,000 mg (~$20 / 90 softgels). Note: capsules are typically 1,000 mg total but may contain ~400 mg pure PSO - check the label for standardization.

Typical cost: $14-20/month

Safety notes

Generally well tolerated with adverse effects comparable to placebo in the clinical trial. May interact with diuretic medications. Evidence is limited to men with androgenetic alopecia - efficacy in women or other hair loss types is unestablished. Choose cold-pressed, unrefined oil for best phytosterol content.

Drug & supplement interactions

  • Always tell your doctor or pharmacist about any supplements you take.
  • Interactions can occur with prescription medications, blood thinners, and immunosuppressants.
  • Herbal remedies can affect how the body absorbs or metabolises drugs.
  • Check drugs.com interactions checker before starting.

Clinical source

Cho 2014 - Evid Based Complement Alternat Med (PMID 24864154)

This information is compiled from primary clinical literature and is for informational purposes only. It is not a substitute for professional medical advice. Read our full disclaimer.