Vitamins & Supplements for Psoriasis: A Comprehensive Guide
Psoriasis is a systemic immune-mediated condition, and its management rarely comes down to a single intervention. Nutritional support sits within a comprehensive approach — it doesn't replace medical treatment, but addressing the nutritional dimensions of psoriasis is increasingly understood as a legitimate and meaningful part of long-term management.
This guide covers the nutrients with the most evidence for psoriasis, what each specifically does, what the research shows, and what a realistic expectation of benefit looks like. Several have their own dedicated articles in this series — this guide brings them together with the appropriate emphasis on each.
Can vitamins help psoriasis?
Some vitamins may help support:
skin health
inflammation balance
immune function
But vitamins are not a cure for psoriasis, and evidence varies depending on the nutrient.
In short:
Certain deficiencies may worsen psoriasis
Some supplements may support inflammation balance
Research is mixed and inconsistent
Vitamins alone usually won’t control psoriasis fully
Why vitamins are linked to psoriasis
Psoriasis is an immune-mediated inflammatory condition.
Because inflammation, immune balance, and skin repair are involved, researchers have studied nutrients including:
vitamin D
omega-3 fatty acids
zinc
selenium
B vitamins
Some deficiencies appear more common in people with psoriasis
Vitamin D: the most evidence-backed nutrient for psoriasis
Vitamin D has both the most clinical evidence and the most specific mechanistic relevance of any supplement for psoriasis. It is covered in depth in the vitamin D psoriasis article in this series. The key points:
Vitamin D receptors (VDRs) are expressed on keratinocytes and immune cells relevant to psoriasis. Vitamin D regulates keratinocyte differentiation and proliferation — directly targeting the accelerated cell turnover that produces plaques. It modulates the Th17/Th1 immune responses central to psoriatic inflammation. And it reduces IL-17, IL-23, and TNF-α production — the same cytokines targeted by several psoriasis biologics.
Multiple studies have found lower serum vitamin D levels in psoriasis patients compared to controls, with inverse correlations between vitamin D status and PASI severity scores. Supplementation trials have produced variable results but are more consistently positive in people with confirmed deficiency.
In the UK, vitamin D insufficiency is extremely common, particularly from October to April when UVB levels are insufficient for skin synthesis. For people with psoriasis — who often avoid sun exposure to reduce heat-triggered flares — deficiency is prevalent year-round. Supplementation with vitamin D3 at 1,000–2,000 IU daily is a reasonable baseline; testing serum 25(OH)D through your GP allows dosing to be calibrated to actual status.
Omega-3 fatty acids: anti-inflammatory evidence specific to psoriasis
Omega-3 fatty acids — particularly EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid) — have some of the most specific clinical trial data for psoriasis of any supplement category.
The mechanism is direct: EPA competes with arachidonic acid for cyclooxygenase and lipoxygenase enzymes, reducing production of pro-inflammatory prostaglandins and leukotrienes (particularly leukotriene B4, which is elevated in psoriatic skin). This is a targeted anti-inflammatory effect on the same inflammatory pathway active in psoriasis.
Several randomised controlled trials have found that fish oil supplementation (providing EPA and DHA) reduces PASI scores, reduces erythema and scaling, and reduces serum inflammatory markers including leukotriene B4 in psoriasis patients. A systematic review found benefit particularly for erythema reduction. The effect is modest compared to systemic treatments but meaningful in the context of nutritional supplementation.
The important distinction from the seeds article: ALA (the plant-based omega-3 in flaxseeds and chia seeds) converts to EPA and DHA at only 5–10% efficiency. For psoriasis-relevant anti-inflammatory effects, direct EPA/DHA from fish oil or algae-based supplements is substantially more effective than plant-based ALA sources.
Vitamin B12
Topical vitamin B12 (cobalamin) has been studied specifically for psoriasis — particularly as a component of a topical avocado and B12 cream — with some published trial evidence showing reductions in PASI scores and improved psoriasis severity compared to a vitamin E cream control. This is distinct from oral B12 supplementation, which has less evidence for psoriasis.
For people who are vegetarian or vegan, B12 supplementation is a nutritional necessity regardless of skin condition; animal products are the only significant dietary source. The connection to the B12-acne article in this series is worth noting: oral high-dose B12 may theoretically worsen any acne-like follicular inflammation through microbiome changes, and psoriasis patients who also have acne should be aware of this.
Zinc: immune regulation and the psoriasis-specific evidence
Zinc is a trace mineral with specific and well-documented relevance to psoriasis. Multiple studies have found lower serum zinc levels in psoriasis patients compared to controls, with correlations between zinc status and disease severity.
Zinc's relevance to psoriasis operates through several pathways: it regulates T-cell function, reducing the overactive Th17 response central to psoriasis; it inhibits the enzyme 5α-reductase (involved in androgen metabolism and inflammatory signalling); it has antioxidant properties; and it is required for normal keratinocyte function. Zinc supplementation has shown modest but consistent improvements in psoriasis severity in some trials.
Plant-source zinc (from seeds and legumes) is less bioavailable than animal-source or supplemental zinc due to phytic acid binding, as noted in the seeds article. A dedicated zinc supplement provides a consistent, bioavailable dose.
Selenium: the antioxidant connection
Selenium is worth specific mention because its relevance to psoriasis is more specific than general antioxidant support.
Psoriasis is associated with significantly elevated oxidative stress — free radical production from the chronic inflammatory environment depletes antioxidant defences. Selenium is a cofactor for glutathione peroxidase, one of the body's primary antioxidant enzymes. Several studies have found lower serum selenium in psoriasis patients, and the relationship between selenium status and psoriasis severity has been documented across multiple populations.
Additionally, as covered in the thyroid article in this series, selenium's role in thyroid hormone metabolism is relevant — psoriasis patients have elevated rates of autoimmune thyroid disease, and selenium supports thyroid function and reduces anti-TPO antibody levels in Hashimoto's.
The UK diet provides variable selenium — it depends heavily on the selenium content of soil where food is grown, and UK soils are generally selenium-poor compared to North America. People not eating regular amounts of oily fish, meat, and Brazil nuts may have marginal selenium status.
Recommended Products
BetterYou DLux 1000 Vitamin D Oral Spray
1,000 IU vitamin D3 per spray, absorbed sublingually without requiring a fat-containing meal. A practical daily UK option.
Minami MorEPA Platinum High-Strength Omega-3 Fish Oil
a high-EPA formulation (over 85% EPA) in a concentrated softgel. High EPA relative to DHA is appropriate for the anti-inflammatory focus relevant to psoriasis. For those preferring a plant-based option, an algae-derived EPA/DHA supplement provides the same active forms without fish.
Higher Nature Selenium 200µg
selenomethionine, the organic form with best bioavailability. 200µg is within the established safe range and the dose most studied in clinical research.
Magnesium
The connection between magnesium, stress, and psoriasis is covered in depth in the magnesium article in this series. Magnesium supports the HPA axis stress response — depleted magnesium amplifies cortisol reactivity, which drives inflammatory cascades relevant to psoriasis flares. It also contributes to anti-inflammatory signalling and is depleted by chronic inflammatory states.
Magnesium glycinate or citrate are better absorbed than the cheaper magnesium oxide form common in lower-quality supplements. The Drought Skin Support Formula includes magnesium specifically for this reason.
Fumaric acid: the pharmaceutical natural compound
Fumaric acid esters (FAEs) are worth a brief mention because they are one of the few naturally occurring compounds that has made the leap to pharmaceutical psoriasis treatment — Fumaderm (dimethyl fumarate) is a licensed systemic treatment for moderate-to-severe psoriasis in Germany and has been used for decades. In the UK, dimethyl fumarate (Skilarence) is licensed for moderate-to-severe psoriasis.
Fumaric acid is found naturally in the human body and in some plant foods. The pharmaceutical form delivers concentrations far beyond dietary sources. This is included here not as a supplement recommendation but to illustrate that the boundary between "natural nutrient" and "pharmaceutical treatment" is not as clear as it sometimes appears in psoriasis discussions.
Can vitamin deficiencies worsen psoriasis?
Possibly.
Research suggests psoriasis may be associated with lower levels of:
vitamin D
folate
certain antioxidants
But deficiency doesn’t necessarily mean supplementation will dramatically improve symptoms.
What the evidence doesn't support
Several supplements are commonly mentioned online for psoriasis without meaningful clinical evidence: turmeric (covered in the turmeric article — plausible mechanism, limited evidence, significant bioavailability challenges), probiotics (emerging evidence, covered in the probiotics psoriasis article), and evening primrose oil (GLA has some theoretical relevance but clinical evidence for psoriasis is poor). These are not contraindicated but should not be the primary focus of a supplement strategy for psoriasis.
Are multivitamins helpful for psoriasis?
Usually only if you have:
a deficiency
poor diet quality
restricted nutrition
General multivitamins are unlikely to significantly improve psoriasis on their own.
Building a sensible supplement strategy
The hierarchy of nutritional evidence for psoriasis, from strongest to weakest:
Vitamin D — correct deficiency as a priority; most evidence and most specific mechanism. Omega-3 (EPA/DHA) — direct anti-inflammatory effect on psoriasis-relevant pathways; modest but documented clinical evidence. Zinc — consistently lower in psoriasis patients; documented immune regulatory role. Selenium — specific antioxidant relevance; commonly marginal in UK diet. Magnesium — stress regulation relevance; commonly depleted by chronic inflammation.
Foods vs supplements for psoriasis
Whole foods
Usually provide:
fibre
antioxidants
healthy fats
broader nutritional support
Supplements
May help fill deficiencies or support certain pathways.
But supplements work best alongside:
balanced nutrition
healthy lifestyle habits
broader psoriasis management.
Skin support for psoriasis-prone skin
Drought's Skin Support Formula brings together vitamin D, zinc, magnesium, vitamin C, CoQ10, B vitamins, and 8 other nutrients in a daily supplement designed specifically for reactive and inflammatory skin. It addresses the multi-nutrient approach that single-supplement strategies cannot replicate — covering the documented deficiencies and mechanistic pathways of psoriasis in one consistent daily dose. Made in the UK, suitable for vegetarians, formulated for long-term daily use.
FAQs: Vitamins & psoriasis
What vitamins are best for psoriasis?
Vitamin D has the most evidence, followed by omega-3 fatty acids (EPA/DHA), zinc, and selenium. Each addresses a different aspect of psoriasis pathology — immune regulation, inflammation, oxidative stress, and barrier function.
Does vitamin D cure psoriasis?
No — psoriasis is a complex immune condition with no nutritional cure. Vitamin D addresses specific pathways (keratinocyte regulation, Th17 modulation) and correcting deficiency supports disease management alongside other treatments..
Can fish oil improve psoriasis?
Some randomised controlled trials show fish oil (providing EPA and DHA) reduces PASI scores and inflammatory markers in psoriasis. The anti-inflammatory effect is specific — EPA competes with arachidonic acid in the leukotriene pathway active in psoriatic skin.
Are multivitamins effective for psoriasis?
Generic multivitamins rarely provide the specific nutrients at the doses relevant to psoriasis. A targeted approach addressing the specific deficiencies documented in psoriasis populations is more effective.
How long do supplements take to work for psoriasis?
Most trials use 8–12 week periods. Expect meaningful assessment to take at least this long with consistent daily use.
Can supplements replace psoriasis medication?
No. For moderate-to-severe psoriasis, medical treatment (topical, phototherapy, systemic, or biologic) is essential. Nutritional support is a complementary approach — meaningful alongside treatment, not instead of it.
Final thoughts
The most evidence-backed nutritional interventions for psoriasis are vitamin D (correcting deficiency; direct keratinocyte and immune regulatory mechanism), omega-3 EPA/DHA (direct anti-inflammatory effect on leukotriene B4 and psoriatic inflammation; modest but documented clinical evidence), zinc (immune regulatory role; consistently lower in psoriasis patients), and selenium (antioxidant defence; commonly marginal in UK diets). These work through complementary pathways and are best addressed together rather than in isolation. None replaces medical treatment for moderate-to-severe disease, but together they address nutritional gaps that are more prevalent in psoriasis populations and that the condition's inflammatory environment actively depletes.
Vitamins and supplements are often discussed as “natural” psoriasis remedies—but the evidence is mixed and often overstated online.
While correcting deficiencies and supporting overall nutrition may help, vitamins alone rarely control psoriasis fully.
The most effective long-term approach supports your skin across multiple pathways—not just through one supplement or nutrient.
Start your skin support journey →
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