|Plant species||Reported ethnopharmacological use with reference source||In vivo and in vitro activity against psoriasis with reference source||Side effects and toxicity with reference source|
|Aloe vera||The plant was used in folk medicine for the treatment of psoriasis in South Africa , Turkey , Pakistan , India , Middle East , Palestine [17, 39] and Mexico .||
Hydrophilic cream and gel of Aloe vera were tried and showed significant improvement against psoriasis in a randomized clinical trial [24, 25]. In another study, topical Aloe vera with 0.1% triamcinolone acetonide was used in mild to moderate plaque psoriasis. Aloe showed its ability to reduce the clinical symptoms of psoriasis .|
Aloe extract showed anti-psoriatic activity of 81.95%, compared with 87.94 for tazarotene in the mouse tail model of psoriasis .
|Localized side effects including dryness, stinging, soreness, fissures, erythema and contact urticaria may develop after using topical Aloe [25, 43, 44].|
|Trigonella arabica||The plant was used in ethnomedicine for treatment of psoriasis in Palestine  and Pakistan .||No reference||No reference|
|Catharanthus roseus||No reference||C. roseus reduced the expression of psoriatic marker, keratin 17 (K17) in human keratinocytes .||No reference|
|Anthemis cotula||No reference||No reference||Contact sensitization .|