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.
Natural Support for Hypertension and Anxiety
Understand the physiological link between stress, nervous system tension, and high blood pressure, and how essential minerals help break the cycle.

The Vicious Cycle of Stress and Pressure
If you suffer from both hypertension and anxiety, you are likely trapped in a frustrating physiological loop. Anxiety triggers the release of stress hormones like adrenaline and cortisol. These hormones command your heart to beat faster and your blood vessels to constrict—driving your blood pressure up. Then, the physical sensation of a racing heart and the worry over high blood pressure readings trigger more anxiety, perpetuating the cycle.
Standard medical treatments often involve prescribing one pill for the blood pressure and another for the anxiety. But this approach treats the symptoms in isolation, ignoring the underlying nutritional deficiencies that leave your nervous and cardiovascular systems vulnerable to stress.
The Role of Potassium in Nervous System Regulation
While potassium is widely known for its role in cardiovascular health, it is equally critical for the proper functioning of your nervous system. Potassium is responsible for conducting the electrical signals that allow your nerves to communicate and your muscles to relax.

When you are deficient in potassium—as the vast majority of people are—your nervous system remains in a heightened state of excitability. It becomes difficult for your body to “power down” after a stressful event. By restoring adequate potassium levels, you provide your nervous system with the biological off-switch it needs to calm down, which in turn signals your blood vessels to relax and dilate.
How Tarsul Supports the Mind-Body Connection
Tarsul offers a foundational approach to managing the physical symptoms of stress and hypertension through its unique mineral composition:
- Potassium for Relaxation: The highly bioavailable Potassium Bitartrate in Tarsul helps regulate the electrical activity of both your heart and your nervous system. This supports a calmer neurological state and allows the smooth muscles lining your blood vessels to release their tension.
- Sulfur for Cellular Health: Chronic stress and anxiety produce high levels of oxidative stress and inflammation, which damage the cardiovascular system. The Organic MSM Sulfur in Tarsul is a potent anti-inflammatory that helps protect the vascular lining from stress-induced damage while supporting the structural integrity of your arteries.
Breaking the Cycle Naturally
You cannot simply think your way out of physical anxiety, nor can you force your blood vessels to relax when they lack the biological tools to do so. By addressing the underlying mineral deficiencies, you are giving your body the capacity to handle stress more effectively.

When your nervous system has the potassium it needs to regulate electrical signals, and your cardiovascular system has the sulfur it needs to remain flexible and resilient, you create an internal environment that is capable of returning to a state of calm and normal pressure.
Support Your Body’s Ability to Relax
Discover how restoring essential mineral balance can help calm your nervous system and support healthy blood pressure.
Related reading on this topic
- Natural Supplement for Hypertension
- Natural Alternatives to Lisinopril, Amlodipine, and Beta Blockers
- Natural Supplement to Lower Blood Pressure Fast
- Beyond the Reviews: Evaluating Natural Blood Pressure Supplements
- 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.
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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.