Tarsul is a dietary supplement made with cream of tartar and MSM sulfur. It is available in capsule and powder formats. This page provides general product information. It is not medical advice.
Before You Use Tarsul
Speak with a licensed healthcare professional before using a dietary supplement if you are pregnant or nursing, have a medical condition, take prescription or over-the-counter medicines, or are considering it for a child. This is especially important for people who have questions about potassium intake or who have been advised to monitor minerals in their diet.
Do not use Tarsul to diagnose, treat, cure, or prevent a disease. Seek medical care for new, severe, persistent, or concerning symptoms. Keep supplements out of the reach of children.
Capsules and Powder
The capsule and powder products contain the same core ingredients in different formats. Choose the format that fits your preferences, then follow the directions and serving information printed on that product’s current label. Do not combine products or increase the labeled serving without guidance from a qualified healthcare professional.
Why the Previous Condition-Specific Dose Table Was Removed
The older version of this page included condition-specific dose suggestions. A general website cannot determine what is appropriate or safe for an individual medical concern. Those old instructions and the related chart have been removed. Tarsul’s current product label is the appropriate source for ordinary use directions, and a qualified healthcare professional can help with individual questions.
Questions About Tarsul
For product, order, or shipping questions, contact Tarsul at info@tarsul.com or call 619-500-4403. For questions about a medical condition, symptoms, medications, or personal dietary needs, contact a licensed healthcare professional.
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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.