About Tarsul

Two ingredients. Centuries of use. One simple formula that works.

What Is Tarsul?

Tarsul is a two-ingredient dietary supplement: organic cream of tartar (potassium bitartrate) and organic MSM sulfur. That’s it. No fillers, no binders, no proprietary blends, no ingredients you can’t pronounce.

Both ingredients have been used for centuries. Cream of tartar has been used medicinally since at least the 17th century. MSM sulfur occurs naturally in many foods and has been studied extensively for its anti-inflammatory and detoxification properties. Together, they address two of the most common mineral deficiencies in the modern diet: potassium and sulfur.

Why These Two Ingredients?

Modern food is depleted. Since 1940, our soil has lost up to 70% of its essential mineral content due to industrial agriculture. The food we eat today contains a fraction of the minerals it once did. Potassium and sulfur are among the most severely depleted.

Potassium regulates fluid balance, supports healthy blood pressure, drives the muscle contractions that move food through your digestive tract, and maintains the electrical potential of every cell in your body. Sulfur is essential for producing glutathione (your body’s master antioxidant), collagen, and the proteins that form your gut lining, skin, hair, and nails.

When these two minerals are deficient — which they are for most people eating a modern diet — the downstream effects are wide-ranging: constipation, edema, skin problems, joint pain, poor gut health, slow detoxification, and more. Tarsul addresses both deficiencies in a single, simple formula.

The Science Behind Tarsul

Tarsul was developed with the guidance of Dr. John Parks Trowbridge, M.D., FACAM — a board-certified physician with decades of experience in nutritional medicine and mineral therapy. Dr. Trowbridge has spent his career studying the relationship between mineral deficiency and chronic disease, and his clinical experience informed the Tarsul formula.

The formula is grounded in well-established nutritional science. Potassium bitartrate’s role in gut health and fluid balance is documented in medical literature going back centuries. MSM sulfur’s anti-inflammatory and detoxification properties have been studied in dozens of peer-reviewed trials.

Who Makes Tarsul?

Tarsul is made in the United States in an FDA-registered, GMP-certified facility. Every batch is tested for purity and potency. We use only food-grade, organic ingredients — the same quality you’d find in a kitchen, not a chemical plant.

We’re a small company. We don’t have a massive marketing budget or celebrity endorsements. What we have is a product that works, a 30-day money-back guarantee, and customers who’ve been with us for years because Tarsul keeps delivering results.