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Condition

Psoriasis

Psoriasis is a chronic autoimmune condition in which the immune system pushes skin cells to build up too fast, causing red, scaly, inflamed patches. Omega-3 fatty acids and vitamin D have the strongest support among supplements, each with moderate evidence, though reviews of probiotics found mixed results on CRP, a blood marker of inflammation. Most other options rest on limited evidence, small studies, or mouse work, so conclusions stay tentative.

Sources: PMID 39798817; PMID 41156763

Supplements studied
7
Graded outcomes
5
Trials
4
People studied
1,037

Evidence by supplement

  • Strong
  • Moderate
  • Limited
  • Very limited

7 supplements

Probiotics: outcomes studied for Psoriasis
GradeOutcomeEffectSizeStudiesPeopleStudies list
C-Reactive Protein (CRP)

Mixed effect

2 studies400 people
Psoriasis SymptomsImproves (the measure goes down)1 study400 people
Interleukin 6Improves (the measure goes down)400 people
Quality of LifeImproves (the measure goes up)400 people
Tetradecyl Thioacetic Acid: outcomes studied for Psoriasis
GradeOutcomeEffectSizeStudiesPeopleStudies list
Cell Adhesion Factors

Small Decrease

Improves (the measure goes down)Small effect43 people
Total cholesterolImproves (the measure goes down)1 study43 people
TNF-AlphaImproves (the measure goes down)43 people
TriglyceridesImproves (the measure goes down)43 people

Aloe Vera

  • Psoriasis Symptoms
  • Pain
Aloe Vera: outcomes studied for Psoriasis
GradeOutcomeEffectSizeStudiesPeopleStudies list
Psoriasis Symptoms

No effect

NoneNo effect1 study120 people

Studies that measured psoriasis symptoms

Pain

No effect on psoriasis pain

NoneNo effect456 people

Bakuchi

  • Antipsoriatic Activity: improves
Bakuchi: outcomes studied for Psoriasis
GradeOutcomeEffectSizeStudiesPeopleStudies list
Antipsoriatic Activity

Mouse tail model: 75.87% antipsoriatic activity vs 87.94% for tazarot gel; preclinical only

Improves (the measure goes up)Moderate effect

Zinc

  • Psoriasis Symptoms: improves
Zinc: outcomes studied for Psoriasis
GradeOutcomeEffectSizeStudiesPeopleStudies list
Psoriasis SymptomsImproves (the measure goes down)1 study60 people

Studies that measured psoriasis symptoms

Phlebodium aureum

  • Psoriasis Symptoms: improves
Phlebodium aureum: outcomes studied for Psoriasis
GradeOutcomeEffectSizeStudiesPeopleStudies list
Psoriasis SymptomsImproves (the measure goes down)1 study63 people

Studies that measured psoriasis symptoms

Inositol

  • Psoriasis Symptoms: improves
Inositol: outcomes studied for Psoriasis
GradeOutcomeEffectSizeStudiesPeopleStudies list
Psoriasis SymptomsImproves (the measure goes down)1 study15 people

What the published studies found

1 automated reading

Automated reading of the published studies (Decosa evidence engine), for outcomes Winnowleaf has not graded yet. It is not a Winnowleaf grade and does not change one. How it is read

  • Bromelain: psoriasis

    The search of the published studies found none on Bromelain and psoriasis that could be read, so there is no finding to report either way.

    Automated reading of the published studies (Decosa evidence engine), run 30 Sep 2026. It reads abstracts, can miss studies, and a repeat run can differ.

Key findings

  • C-Reactive Protein (CRP)Probiotics
  • Cell Adhesion FactorsTetradecyl Thioacetic AcidImproves (the measure goes down)
  • Psoriasis SymptomsAloe Vera

The Psoriasis Supportive Care protocol

2 primary supplements · 7 supporting supplements

See the full protocol

Shop the evidence-backed picks

Fullscript collectionSkin: evidence-graded picksOpen on Fullscript

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Studies cited

8 studies from PubMed

  1. Treatment of localized psoriasis with a topical formulation of zinc pyrithioneActa Dermatovenerol Alp Panonica Adriat · PMID 22367374
  2. Anti-inflammatory and hypolipidemic effects of the modified fatty acid tetradecylthioacetic acid in psoriasis--a pilot studyScand J Clin Lab Invest · PMID 21338276
  3. Probiotic Supplementation and Inflammatory Status in Coronary Artery Disease: A Systematic Review and Meta-Analysis.Microorganisms · PMID 41156763
  4. Effect of probiotics on C-reactive protein levels in schizophrenia: Evidence from a systematic review and meta-analysis.Complement Ther Med · PMID 39798817
  5. The efficacy and safety of probiotics in the adjuvant treatment of psoriasis: a systematic review and meta-analysis of randomized controlled trials.Front Med · PMID 39328313
  6. A new agent (hydrophilic fraction of polypodium leucotomos) for management of psoriasisInt J Dermatol · PMID 4609374
  7. The effect of inositol supplements on the psoriasis of patients taking lithium: a randomized, placebo-controlled trialBr J Dermatol · PMID 15149510
  8. Effects of Aloe vera in adults with mucocutaneous problems: A systematic review and meta-analysis.J Adv Nurs · PMID 33336470