Natural Supplement for Psoriasis and Psoriatic Arthritis

Dual Support for Psoriasis and Psoriatic Arthritis

When the Inflammation Goes Deeper Than the Skin

For up to 30 percent of people with psoriasis, the condition eventually progresses beyond the skin and begins attacking the joints, resulting in psoriatic arthritis. This dual diagnosis is a clear indicator that the problem is deeply systemic and cannot be managed with topical treatments alone.

Raised, scaling skin plaques characteristic of psoriasis, illustrating an article on natural supplement for psoriasis and pso
Raised, scaling skin plaques characteristic of psoriasis. Used for illustration only — Tarsul is a dietary supplement, not a treatment for any condition.

When you are dealing with both skin plaques and debilitating joint pain, you need a solution that addresses the root cause of the inflammation circulating throughout your entire body.

The Role of Sulfur in Joint and Skin Health

Sulfur is the third most abundant mineral in the human body, and it is absolutely critical for both skin integrity and joint health. It is a primary building block of collagen, cartilage, and connective tissue.

Cream of tartar and MSM sulfur powder, the two ingredients in Tarsul, in the context of psoriasis flares
Tarsul is a fine white powder — potassium bitartrate (cream of tartar) combined with MSM sulfur — stirred into water rather than swallowed as a tablet.

Unfortunately, modern agricultural practices have largely depleted sulfur from our soil and our food supply. When your body is deficient in sulfur, your joints lose their cushioning, and your skin loses its structural support, making both highly susceptible to autoimmune inflammation.

Comprehensive Relief with Tarsul

Tarsul provides a concentrated dose of highly bioavailable organic sulfur (MSM) combined with potassium. This unique formulation offers dual support for those suffering from both psoriasis and psoriatic arthritis.

Tarsul 60-capsule, 600 gram and 150 gram bottles, the sizes referred to in this natural supplement for psoriasis and psoriati
Tarsul is sold in a 150 gram bottle, a 600 gram bottle and a 60-capsule bottle. Dosing guidance is on the ingredients page.

The sulfur works to rebuild damaged connective tissue in the joints while helping to cleanse the gut of the organisms that trigger systemic inflammation. The potassium helps flush excess sodium and fluid from the tissues, reducing the swelling and stiffness associated with arthritic flares. By addressing the fundamental mineral deficiencies driving the condition, Tarsul provides comprehensive support for both your skin and your joints.

Stop Treating Symptoms. Start Restoring Your Foundation.

Your skin is a reflection of your internal environment. Tarsul provides the exact foundational mineral support your cells need to cleanse the gut, calm inflammation, and restore healthy skin.

Order Tarsul Today

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About this page — last reviewed September 2026

Published by Tarsul, a family-run dietary supplement company operating from San Diego, California since 2010. Written and reviewed in-house by Russ Guillemot, founder, drawing on fifteen years of direct correspondence with customers and wholesale accounts. We are not physicians and nothing here is a diagnosis or a course of treatment.

Where we reference published research we name the authors and the journal so you can look it up yourself. Where something is a common observation rather than a finding, we say so plainly. If a claim cannot be sourced, we leave it out.

Tarsul · 2307 Fenton Parkway #107-42, San Diego, CA 92108 · 619-500-4403 · info@tarsul.com

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.