Before you read on — a word about potassium and prescriptions
Cream of tartar is a concentrated source of potassium. That is the point of it, and for most people it is unremarkable. But potassium is one of the few minerals where more is not automatically better, and a handful of common prescriptions change how your body holds on to it.
Talk to your doctor or pharmacist before adding Tarsul if you take a potassium-sparing diuretic (spironolactone, triamterene, amiloride), an ACE inhibitor (lisinopril, enalapril, ramipril), an ARB (losartan, valsartan, irbesartan), a potassium supplement or salt substitute, or regular NSAIDs — and if you have reduced kidney function or have been told to watch your potassium, ask first. It is a five-minute conversation and worth having.
And please do not stop, reduce, or replace a prescribed medication on your own. Nothing on this page is a reason to change what your doctor put you on. If you want to discuss it, discuss it with them. Fuller detail on serving sizes and precautions is on our dosage and precautions page.
Blood Pressure Medication and Potassium: What to Know Before Adding a Supplement
How Each Drug Class Handles Potassium
Explore how addressing underlying mineral deficiencies offers a different path forward for those seeking to avoid or reduce their reliance on lifetime pharmaceuticals.

The Pharmaceutical Trap
For millions of adults, a routine doctor’s visit ends with a prescription pad and a grim reality: you will likely be taking this pill for the rest of your life. Blood pressure medications—whether they are ACE inhibitors, beta-blockers, calcium channel blockers, or diuretics—are highly effective at forcing your numbers down. But they achieve this through artificial manipulation, not true healing.
The problem with overriding your body’s natural regulatory systems is that it almost always comes with a cost. Fatigue, chronic dry cough, dizziness, weight gain, and sexual dysfunction are incredibly common side effects. Even worse, over time, the body often adapts to the medication, requiring higher doses or the addition of a second or third drug to achieve the same effect.
Why the Standard Approach Falls Short
Most blood pressure medications work by either slowing your heart rate, forcing your kidneys to excrete water, or chemically blocking the signals that tell your blood vessels to constrict. While this lowers the pressure inside the pipes, it does absolutely nothing to improve the health of the pipes themselves.

If your arteries are stiff, inflamed, and lacking the essential minerals required for flexibility and natural dilation, the core problem remains entirely unaddressed.
The Tarsul Approach: Restore, Don’t Override
Seeking a natural alternative to blood pressure medication requires a shift in perspective. Instead of asking, “How can I force my blood pressure down?” you must ask, “What is my cardiovascular system missing that is preventing it from regulating itself?”
The answer, for a significant portion of the population, is a critical deficiency in potassium and bioavailable sulfur.
| The Mechanism | Pharmaceutical Approach | The Tarsul Approach |
|---|---|---|
| Fluid Balance | Diuretics force the kidneys to flush sodium and water, often depleting essential potassium in the process. | Provides Cream of Tartar (Potassium) to naturally balance cellular sodium and support healthy fluid levels. |
| Vessel Constriction | Chemical blockers prevent the signals that cause vessels to tighten. | Provides MSM Sulfur to support the structural elasticity of the blood vessels themselves. |
A Foundational Shift
Tarsul is not a drug, and it does not artificially suppress your cardiovascular system. Instead, it delivers a precise combination of Organic MSM Sulfur and Potassium Bitartrate. This combination addresses the root causes of vascular stiffness and cellular fluid imbalance.

By providing the structural building blocks for healthy, flexible arteries (sulfur) and the essential electrolyte required for cellular relaxation (potassium), Tarsul supports your body’s innate ability to maintain healthy blood pressure naturally.
Ready to Explore a Different Path?
Support your cardiovascular health from the ground up by addressing the mineral deficiencies that drive vascular tension.
Related reading on this topic
- Natural Support for Hypertension and Anxiety
- Natural Supplement to Lower Blood Pressure Fast
- Can Supplementation for Hypertension Help Lower Blood Pressure Safely?
- How to Lower Blood Pressure Without Medication
- What is actually in Tarsul, and how it is taken
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.