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?

You will see a lot of supplement companies claim that modern soil has lost some dramatic percentage of its minerals since the 1940s. We used to repeat a version of that ourselves. We have taken it out, because when we went looking for the source we could not find one that held up, and the researchers who have compared old and new food composition tables disagree with each other about how much of the change is real and how much is an artifact of different measuring methods. We would rather tell you that than quote a number we cannot stand behind.

What is not in dispute is that most Americans fall short of the recommended intake for potassium, and that sulfur is not something most people think about at all. 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 has been used in clinical practice for over a decade. Among the practitioners who order it wholesale is Dr. John Parks Trowbridge, M.D., FACAM, an integrative physician in Texas who has purchased Tarsul by the case for more than ten years and makes it available to his own patients. He is a customer of ours, not a formulator or a paid spokesperson, and he has no financial interest in the company.

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.