Oregon Grape

A rare case among herbal remedies: real, repeated topical psoriasis trial data

433-patient trial showed significant PASI improvement

A more sustainable alternative to wild goldenseal

Important: These statements have not been evaluated by the FDA. This information is not intended to diagnose, treat, cure, or prevent any disease. Always consult your physician before starting any supplement, especially if pregnant or nursing.

Overview

Oregon Grape (Mahonia aquifolium, also classified as Berberis aquifolium) is a berberine-containing shrub native to the Pacific Northwest, long used in traditional herbal medicine for skin conditions and as a general antimicrobial. It shares its key active alkaloid, berberine, with goldenseal — but unlike a lot of traditional botanicals riding on reputation alone, Oregon Grape has a genuinely unusual amount of modern clinical research behind one specific use case: topical treatment of psoriasis.

Multiple trials, including a large open multicentre study and separate double-blind, placebo-controlled trials, have found topical Mahonia aquifolium cream reduces psoriasis severity scores meaningfully over about 12 weeks — a level of clinical evidence that's genuinely rare for an herbal skin remedy. It's also increasingly promoted as a more sustainable alternative to goldenseal, since wild goldenseal populations have faced significant over-harvesting pressure.

Potential Benefits

Topical Psoriasis Support

A large open multicentre trial of 433 patients found modified PASI scores dropped significantly from 5.5 to 2.3 over 12 weeks of topical use.

Confirmed in Placebo-Controlled Trials

Separate double-blind, placebo-controlled studies have also found benefit for mild-to-moderate psoriasis, strengthening the open-label results.

No Hormonal Side Effects

Unlike topical corticosteroids, Mahonia aquifolium cream doesn't carry the hormonal side-effect profile associated with long-term steroid use.

A More Sustainable Berberine Source

Cultivated more easily than wild goldenseal, making it a lower-impact source of similar alkaloid compounds.

Typical Dosage

Topical (Studied Use Case)

10% cream, 2-3x daily

The concentration and frequency used in the clinical trials showing benefit

Duration to See Effects

Up to 12 weeks

Matches the trial length that showed significant PASI score improvement

Pro Tips

For psoriasis specifically, this ingredient's evidence is topical — a cream or ointment, not an oral capsule
Give it the full 12 weeks before judging results — the positive trials measured change over that full period
Mild skin irritation at the application site is the most commonly reported side effect in trials
If considering it for other traditional uses (internal, antimicrobial), the modern research base is much thinner than for topical psoriasis use

Research Snapshot

An open, prospective multicentre trial conducted across 89 dermatological practices in Germany treated 433 patients with subacute and chronic psoriasis using 10% Mahonia aquifolium cream for 12 weeks; modified PASI scores fell significantly from 5.5 to 2.3, with 81.1% of patients rated improved or healed by their dermatologists. A separate review of three additional clinical trials, including double-blind, placebo-controlled data, corroborated benefit for mild-to-moderate plaque psoriasis with a favorable safety profile.

Sources: Gieler et al., Journal of Dermatological Treatment (1995) · Gulliver & Donsky, American Journal of Therapeutics (2005)

How Oregon Grape Compares

Ingredient	Best For	Key Difference
Oregon Grape	Topical Psoriasis Support	Multiple positive clinical trials, more sustainable than goldenseal
Goldenseal	Short-Term Antimicrobial Use	Shares berberine content, but different studied use case
Berberine	Blood Sugar & Cholesterol Support	Purified, oral use for a completely different application
Cat's Claw	Traditional Antimicrobial Use	A different plant with its own distinct traditional use profile

These are the most common comparisons our customers ask about in-store.

Popular Stacks with Oregon Grape

Skin Support Stack

Oregon Grape (Topical) + Omega-3 + Zinc

Pairs the topical psoriasis research with general skin-supportive nutrients

Immune Support Stack

Oregon Grape + Echinacea + Cat's Claw

A traditional combination of berberine-containing and immune-support botanicals

Metabolic Support Alternative

Berberine + Chromium + Fiber

For blood sugar goals specifically, purified berberine has the stronger oral research base

Frequently Asked Questions

Does Oregon Grape actually help with psoriasis?

Topical Oregon Grape (Mahonia aquifolium) cream has real supporting research, unusual for an herbal psoriasis remedy. An open multicentre trial of 433 patients found modified PASI scores dropped significantly over 12 weeks, and separate double-blind, placebo-controlled trials have also found benefit for mild-to-moderate psoriasis, with no hormonal side effects unlike topical steroids.

What's the difference between Oregon Grape and Goldenseal?

Both contain berberine and related alkaloids and have overlapping traditional uses, but Oregon Grape's best modern research is specifically for topical psoriasis, while goldenseal is more associated with short-term antimicrobial and mucous membrane use. Oregon Grape is also considered a more sustainable alternative, since wild goldenseal has faced significant over-harvesting pressure.

Is Oregon Grape the same as Berberine supplements?

Not exactly. Oregon Grape contains berberine along with other related alkaloids, but standalone berberine supplements (often used for blood sugar and cholesterol support) are typically purified and studied at different doses for different purposes. Oregon Grape's own best research is topical, not the oral metabolic-health use case that pure berberine is studied for.

Sources & References

1. Gieler, U., von der Weth, A., & Heger, M. (1995). Mahonia aquifolium: a new type of topical treatment for psoriasis. Journal of Dermatological Treatment, 6(1), 31–34.

2. Gulliver, W.P., & Donsky, H.J. (2005). A report on three recent clinical trials using Mahonia aquifolium 10% topical cream and a review of the worldwide clinical experience with Mahonia aquifolium for the treatment of plaque psoriasis. American Journal of Therapeutics, 12(5), 398–406.

All references are peer-reviewed studies or position stands from reputable organizations.