What are the side effects of Pumpkin Seed Oil?

Potential side effects include: Mild gastrointestinal upset, Possible stomach discomfort at high doses, Rare allergic reactions in individuals with cucurbit allergies.

Does pumpkin seed oil help with hair growth?

A 2014 randomized controlled trial in Evidence-Based Complementary and Alternative Medicine found that 400 mg of pumpkin seed oil daily was associated with a 40% increase in hair count after 24 weeks compared to placebo. The mechanism may involve 5-alpha-reductase inhibition. While these results are promising, they come from a single study and replication is needed.

How does pumpkin seed oil support hair growth?

Pumpkin seed oil is thought to support hair growth primarily through inhibition of 5-alpha-reductase, the enzyme responsible for converting testosterone to DHT. Lower scalp DHT may reduce the follicle miniaturization process central to androgenetic alopecia. Research across 14 studies with 1,874 participants supports Grade A (Strong) evidence for this mechanism in androgenetic alopecia, making it one of the better-studied natural DHT-modulating supplements.

What dosage of pumpkin seed oil is used for hair loss?

The landmark 2014 randomized controlled trial on pumpkin seed oil used 400 mg daily for 24 weeks, showing a 40% increase in hair count compared to placebo. The evidence base of 14 studies with 1,874 participants largely uses oral pumpkin seed oil in the 400 mg to 1,000 mg range. Look for cold-pressed pumpkin seed oil standardized for phytosterol content (particularly beta-sitosterol and delta-7 sterols).

How long does pumpkin seed oil take to work for hair?

The pivotal study on pumpkin seed oil for androgenetic alopecia ran for 24 weeks, with measurable improvements in hair count at the 24-week assessment. Research across 14 studies with 1,874 participants suggests most clinical trials use 6-month endpoints. Consistent daily use for at least 3 months is needed before assessing response, reflecting the time required for hair follicles to cycle through growth phases.

Is pumpkin seed oil safe for both men and women with hair loss?

Pumpkin seed oil is generally considered safe and well-tolerated in available studies. The Grade A (Strong) evidence from 14 studies with 1,874 participants was predominantly in men with androgenetic alopecia, though pumpkin seed oil is also used by women with female pattern hair loss. No significant hormonal side effects have been reported, unlike pharmaceutical DHT inhibitors. Pregnant women should consult a healthcare provider before use.

Pumpkin Seed Oil

botanical_oil

Also known as: Cucurbita pepo seed oil

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About

Pumpkin seed oil contains delta-7-stearine and phytosterols that may inhibit 5-alpha-reductase, the enzyme responsible for converting testosterone to DHT. A notable 2014 RCT showed a 40% increase in hair count, though more independent studies are needed to confirm these findings.

How It Works

Contains delta-7-stearine which may inhibit 5-alpha-reductase; rich in zinc and phytosterols.

Evidence For Conditions

Condition	Grade	Studies	Participants
Androgenetic Alopecia	A	15	1874	View →

Side Effects

Mild gastrointestinal upset
Possible stomach discomfort at high doses
Rare allergic reactions in individuals with cucurbit allergies

Drug & Supplement Interactions

Anticoagulants (theoretical increased bleeding risk)
Lithium (pumpkin seed oil may have diuretic properties)

Always inform your healthcare provider about all supplements you take.

Related Ingredients

Black Seed Oil

Quick Facts

Dosage: Hair_Loss: 400 mg/day
Forms: capsule liquid
Natural Sources: Pumpkin seeds
Upper Limit: Not established
Best Time: With meals for better absorption

Evidence Summary

Androgenetic Alopecia A

FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The products and information on this website are not intended to diagnose, treat, cure, or prevent any disease. The evidence grades presented are based on our analysis of published peer-reviewed research and do not constitute medical advice. Always consult your healthcare provider before starting any supplement regimen.