Does slippery elm help with psoriasis or eczema? What the research does and doesn't show

No trial has tested oral slippery elm by itself against psoriasis or eczema. The one study that comes close buried slippery elm bark water inside a much larger diet and lifestyle overhaul, in five people, with no control group — so nothing in it can be credited to slippery elm specifically.

What the evidence doesn't support

It doesn't support slippery elm, taken alone, as something that improves psoriasis or eczema. No trial identified for this page tested slippery elm by itself, at any dose, against either condition. It also doesn't support the idea that slippery elm's mucilage — the gel-forming fiber it's mostly studied for — has any established skin effect, since every study of it involves swallowing it, not applying it, and none measured a skin outcome outside the single case series below.

What the trials found

A 2004 report followed five adults with chronic plaque psoriasis (ages 40–68) through a 10-day live-in program and six months at home on a diet protocol that included fresh fruits and vegetables, fish or fowl for protein, fiber supplements, olive oil, and avoidance of red meat and processed food — plus daily saffron tea and slippery elm bark water. Psoriasis severity scores improved substantially over the six months, alongside a gut-permeability test. But the report changed diet, supplements and two herbal teas all at once in five people with no comparison group, so it can't say what slippery elm bark water itself contributed, if anything. No study identified for this page has tested slippery elm, alone or combined, against eczema at all.

Psoriasis and eczema involve different underlying processes — psoriasis is driven by an overactive immune response that speeds up skin-cell turnover, while eczema is tied to a weakened skin barrier and allergic-type triggers — and neither is currently understood to be affected by a fiber taken by mouth. That's a plausible reason the research base is this thin: there's no established mechanism connecting a swallowed mucilage to either process, on top of there being no trial that tested it directly.

Questions people ask

Does slippery elm help with psoriasis?

No trial has tested slippery elm alone for psoriasis. The only related research combined it with a full diet overhaul and a second herbal tea in five people, with no control group.

Does slippery elm help with eczema?

No study identified for this page has tested slippery elm, in any form, against eczema.

When to talk to a doctor

Psoriasis and eczema are diagnosed skin conditions that often need a dermatologist's care, and slippery elm is not a treatment for either. See a doctor for a new rash, a flare that doesn't improve, or signs of skin infection (spreading redness, warmth, pus). See slippery elm: what the research does and doesn't show and slippery elm benefits: what the research does and doesn't show for more.