Potassium is essential for your heart, muscles, and nerves. Many people do not get enough from food, which can cause health problems. If you need more potassium, supplements can help. With so many choices, it can be hard to know which one to pick. This guide covers the best potassium supplements for 2026 and answers common questions to help you decide.
Why Potassium Matters
Potassium is an essential electrolyte in the body, responsible for regulating fluid balance, nerve signals, and muscle contractions. It also plays a key role in maintaining healthy blood pressure levels. According to the National Institutes of Health (NIH), the recommended daily intake of potassium for adults is 2,500-3,000 mg. However, research shows that most people consume only about half the recommended amount. Low potassium levels can lead to muscle cramps, fatigue, irregular heart rhythms, and even kidney stones.
If you cannot get enough potassium from food, a supplement can help.
What to Look for in a Potassium Supplement
Before choosing a potassium supplement, consider these key factors:
- Type of Potassium – There are several forms of potassium used in supplements, including potassium chloride, potassium citrate, potassium gluconate, and potassium bicarbonate. Some forms are gentler on the stomach, while others are more effective at boosting potassium levels.
- Additional Ingredients – Some potassium supplements include additional vitamins and minerals (such as magnesium or calcium) to enhance potassium’s effectiveness and absorption.
- Dosage: Potassium supplements range from 99 mg to 1,000 mg per serving. The correct dose depends on your needs.
- Bioavailability: Choose a supplement that your body can absorb easily.
- Form: Potassium supplements are available as tablets, capsules, powders, or liquids. Pick the type that works best for you.
The Best Potassium Supplements of 2026: A Detailed Comparison
Here are the top 7 potassium supplements for 2026. Each one was checked for quality, effectiveness, and value. You will find a quick comparison and detailed reviews below.
| Product | Key Ingredients | Made In | Highlights | Form | Dose |
|---|---|---|---|---|---|
| Kirkland Signature Potassium | Potassium chloride | USA | Affordable, high-quality, large dose | Tablets | 99 mg |
| Nature Made Potassium | Potassium chloride | USA | Budget-friendly, widely available | Tablets | 99 mg |
| Solgar Potassium | Potassium chloride | USA | Suitable for vegans, high potency | Tablets | 99 mg |
| NOW Foods Potassium Citrate | Potassium citrate | USA | Easier on the stomach, highly absorbable | Capsules | 99 mg |
| Dr. Tobias Potassium | Potassium gluconate | USA | High bioavailability, gentle formula | Capsules | 100 mg |
| Thorne Research Potassium | Potassium bicarbonate | USA | Premium quality, bioavailable | Capsules | 99 mg |
| Bulk Natural Potassium | Potassium chloride | USA | High-dose powder, budget-friendly | Powder | 1,000 mg |
1. Kirkland Signature Potassium
Key Ingredients: Potassium chloride
Made In: USA
Highlights: Affordable, high-quality, large dose
Form: Tablets
Dose: 99 mg
Kirkland Signature Potassium is affordable and provides 99 mg of potassium per tablet. It uses potassium chloride and comes from a well-known brand so that you can expect consistent quality.
Why We Recommend It: This is a good choice if you want a reliable and affordable potassium supplement. It is easy to find and comes from a trusted brand.
Tester Feedback: “I noticed an improvement in my energy levels after taking this regularly. It’s simple and effective—no frills, just potassium.”
Notes/Warnings: Potassium chloride can cause mild stomach upset. Take it with food if needed.
2. Nature Made Potassium
Key Ingredients: Potassium chloride
Made In: USA
Highlights: Budget-friendly, widely available
Form: Tablets
Dose: 99 mg
Nature Made potassium tablets are a reliable and affordable way to increase your potassium intake.
Why We Recommend It: Nature Made is a good option if you are new to supplements or want to save money.
Tester Feedback: “These tablets are easy to swallow and helped me manage my blood pressure levels. It’s a simple, no-nonsense supplement.”
Notes/Warnings: Take with food to reduce stomach irritation.
3. Solgar Potassium
Key Ingredients: Potassium chloride
Made In: USA
Highlights: Suitable for vegans, high potency
Form: Tablets
Dose: 99 mg
Solgar’s potassium supplement is vegan-friendly and provides high-quality potassium in a potent form. It’s a great option for those who want a more natural, plant-based product while still reaping the benefits of potassium.
Why We Recommend It: If you follow a vegan lifestyle or prefer plant-based products, Solgar is a top choice. Their commitment to high-quality ingredients ensures a potent and effective supplement.
Tester Feedback: “Solgar’s potassium has been fantastic for managing my muscle cramps. I love that it’s vegan-friendly.”
Notes/Warnings: Take with meals if you have a sensitive stomach.
4. NOW Foods Potassium Citrate
Key Ingredients: Potassium citrate
Made In: USA
Highlights: Easier on the stomach, highly absorbable
Form: Capsules
Dose: 99 mg
NOW Foods is well-known for its range of high-quality, affordable supplements. Their potassium citrate capsules are a great option for people who experience discomfort with other potassium formulations, such as potassium chloride.
Why We Recommend It: Potassium citrate is easier on digestion and is well absorbed.
Tester Feedback: “I switched to potassium citrate after dealing with stomach upset from potassium chloride, and it worked wonders.”
Notes/Warnings: Good for sensitive stomachs, but the dose is lower than some other options.
5. Dr. Tobias Potassium
Key Ingredients: Potassium gluconate
Made In: USA
Highlights: High bioavailability, gentle formula
Form: Capsules
Dose: 100 mg
Dr. Tobias Potassium uses potassium gluconate, which is easily absorbed and gentle on the stomach. It is a good option if you have digestive issues.
Why We Recommend It: If you’ve had trouble with other forms of potassium supplements, Dr. Tobias offers an alternative that is less likely to cause discomfort.
Tester Feedback: “This potassium supplement is easy on my stomach, and I feel more energized without any side effects.”
Notes/Warnings: The dose is gentle, but some may want a higher amount.
6. Thorne Research Potassium
Key Ingredients: Potassium bicarbonate
Made In: USA
Highlights: Premium quality, bioavailable
Form: Capsules
Dose: 99 mg
Thorne Research potassium bicarbonate is well absorbed and gentle. It is a good choice if you want a high-quality supplement.
Why We Recommend It: Thorne’s potassium supplement is a good choice for anyone seeking the highest quality ingredients and formulations.
Tester Feedback: “Thorne’s products are always reliable, and this potassium supplement is no exception. It helps maintain my energy without any stomach issues.”
Notes/Warnings: A bit pricier than other options, but the quality justifies the cost.
7. Bulk Natural Potassium
Key Ingredients: Potassium chloride
Made In: USA
Highlights: High-dose powder, budget-friendly
Form: Powder
Dose: 1,000 mg
Bulk Natural Potassium powder provides 1,000 mg of potassium chloride per scoop. It is a good option if you need a higher dose or prefer powder.
Why We Recommend It: The powder form allows for more flexible dosing and is ideal for those who need a higher potassium intake.
Tester Feedback: “I love that I can adjust the dosage and mix it into my shakes. It’s great for post-workout recovery.”
Notes/Warnings: Start with a small amount, as the powder is high-dose.
Buyer’s Guide: Choosing the Right Potassium Supplement
When choosing a potassium supplement, consider these points:
- Assess Your Needs: A 99 mg tablet is enough for a slight boost. If you need more, look for powders or higher-dose capsules.
- Stomach Sensitivity: Potassium chloride can upset your stomach. If you are sensitive, try potassium citrate or gluconate.
- Budget: Thorne and Solgar cost more, but Nature Made and Bulk Natural Potassium are affordable and still good quality.
Conclusion
Potassium is essential for your health. The right supplement can help support your heart, muscles, and overall well-being. The products above are top picks for 2026 and offer different forms to fit your needs. Talk to your healthcare provider to find the right dose for you.
Frequently Asked Questions (FAQs)
What is the best time to take potassium supplements?
Potassium supplements are best taken with meals to improve absorption and reduce the risk of stomach upset.
Can potassium supplements help with high blood pressure?
Yes, potassium can help regulate blood pressure by balancing the effects of sodium.
How do I know if I need potassium supplements?
Signs of potassium deficiency include muscle cramps, fatigue, and irregular heart rhythms. Consult a healthcare provider to determine if supplementation is necessary.
Are potassium supplements safe?
Generally, potassium supplements are safe when taken as directed. However, excessive potassium intake can lead to hyperkalemia, which can be dangerous. Always follow dosage instructions.
Can I get potassium from food instead?
Yes, potassium-rich foods include bananas, potatoes, spinach, and avocados. However, many people find it difficult to meet their potassium requirements solely through diet.
What should I look for in a potassium supplement?
Look for high bioavailability, gentle formulations (like potassium citrate or gluconate), and reputable brands.