USN Purefit Power and Cramp Block (often labeled as USN Purefit Sport Cramp Block) is an advanced, sugar-free electrolyte and phosphate supplement engineered to prevent muscle cramping and fight physical fatigue. Formulated with an innovative time-release mechanism, it continuously replenishes essential minerals lost through heavy sweating. It is widely used by endurance athletes—such as marathon runners and cyclists
Core Active Ingredients
The formulation targets neuromuscular excitability and cellular energy using vital elements:
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Sodium Bicarbonate: Supplies essential sodium to maintain fluid balance and acts as a buffering agent to neutralize lactic acid build-up, extending endurance.
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Magnesium Carbonate: Directly aids muscle relaxation and nerve conduction to reduce the electrical misfires that trigger painful muscle spasms.
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Calcium Carbonate: Supports normal muscle contractions and skeletal strength.
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Di-Potassium Phosphate: Restores cellular potassium while supplying phosphates to optimize cellular energy production (ATP) and enhance tissue repair.
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Taurine: An amino acid that regulates intracellular fluid balance and mitigates post-exercise muscle soreness.
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Vitamin B6 (Pyridoxine HCl): Helps alleviate exercise-induced nerve pain and facilitates normal energy metabolism.
Targeted Benefits
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Cramp Prevention: Actively stabilizes mineral ratios within muscle fibers to prevent involuntary locking.
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Power & Stamina Loading: Supports sustained energy output by ensuring proper muscle contraction mechanics over prolonged periods.
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Controlled Hydration: The time-release design provides a steady stream of minerals rather than a sudden spike, allowing the body to absorb nutrients efficiently.
Administration & Dosage Strategy
For maximum efficacy, the dosage should be tailored around your athletic event schedules:
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Pre-Event & During Exercise: Take 2 tablets 30 minutes before starting your workout. Follow with 1 tablet per hour of continuous exercise thereafter.
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Post-Event Recovery: Take 2 tablets 30 minutes after completing the activity, and an additional 2 tablets right before bedtime to assist with overnight muscle recovery.
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Phosphate Loading (Prior to Major Races): Take 3 tablets twice daily for the 3 days leading up to a major competitive event to pre-load mineral stores.
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Daily Maintenance: Take 2 to 4 tablets before bedtime to sustain optimal baseline electrolyte levels.
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Daily Upper Limit: Do not exceed 7 tablets in any 24-hour window. Take with plenty of plain water.
Safety Warnings & Precautions
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Fluid Intake: This supplement is a compressed mineral block. It must always be accompanied by adequate water to prevent gastrointestinal distress or localized stomach irritation.
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Hypertension & Kidney Risks: Because it features a high concentration of sodium and potassium, individuals dealing with chronic kidney disease, high blood pressure, or heart conditions must get medical clearance before using it.
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Digestive Sensitivity: Exceeding the maximum recommended serving can trigger mild gastrointestinal upset, including loose stools, due to the concentrated magnesium content.
