Life Extension Potassium 99mg with Magnesium 250mg - Dual-Action

Our review of Life Extension Potassium 99mg with Extend-Release Magnesium 250mg finds it best suited to people seeking a combined mineral supplement to support muscle function and restful sleep. The single biggest reason to consider this product is its dual-action formula: an extended-release magnesium paired with potassium in a convenient vegetarian capsule, which customers commonly report helps with cramp relief and improved sleep quality. The review examines how the formulation, manufacturing standards, and real-world results stack up for everyday use.

Key Features

• Dual formula: Potassium and magnesium are combined to support electrolyte balance and help the body discard excess sodium.
• Extend-release magnesium: Magnesium is optimized for both immediate and prolonged uptake to provide sustained support for muscles and sleep.
• Vegetarian and clean label: The capsules are vegetarian, vegan, non-GMO, and gluten-free for those with dietary preferences or sensitivities.
• Manufactured in the USA: Made with quality controls and an available Certificate of Analysis, offering transparency on purity and potency.
• Trusted brand history: Produced by a company with over 40 years in nutritional supplements, which can reassure long-term users.

Who It's For

This supplement is a good fit for adults who experience occasional muscle cramps, restless leg symptoms, or mild sleep disturbances and want a combined magnesium and potassium product in vegetarian capsules. It also suits shoppers who prefer supplements manufactured in the USA with non-GMO and gluten-free labeling.

Those seeking a high-dose potassium supplement should look elsewhere, as the product provides a modest potassium amount relative to daily recommendations. People with kidney disease or taking medications that affect potassium or magnesium should consult a healthcare professional before use.

Pros & Cons

Pros

• Provides a convenient combination of potassium and extended-release magnesium to support muscles and sleep.
• Vegetarian, vegan, non-GMO, and gluten-free, meeting common dietary preferences.
• Manufactured in the USA with quality oversight and Certificates of Analysis available.
• Many customers report effective cramp relief and improved sleep quality.

Cons

• Potassium content is relatively low per capsule and may meet only a small fraction of daily needs for some users.
• Not intended as a single-source treatment for clinically low potassium; dosage adjustments may be needed under medical advice.

Specifications

Our Verdict

For adults wanting a combined magnesium and potassium supplement in a vegetarian, quality-controlled formula, this product is a practical choice that often helps with muscle cramps and sleep. Its greatest value is the extend-release magnesium and the convenience of two minerals in one capsule, but those needing substantial potassium supplementation should consider alternative dosing or medical guidance.

Frequently Asked Questions

Will this help with leg cramps?
Many users report reduced muscle cramps and restless leg symptoms when taking this dual mineral supplement, likely due to the magnesium content.

Is the potassium dose high?
The product provides 99 mg of potassium per capsule, which is a modest amount and may cover only a small portion of the daily recommendation for most adults.

Is it suitable for vegetarians?
Yes, the capsules are vegetarian and labeled vegan, non-GMO, and gluten-free.