Back
USNVitamins

USN Cramp Block Tablets

USN Cramp Block Tablets exist for the moment every endurance athlete dreads: the mid-event cramp. This electrolyte-dense tablet formula replenishes key minerals, buffers muscle acidity and supports stamina through long training sessions and race days.

What's Inside

  • Sodium bicarbonate — buffers muscle acidity to support endurance and speed
  • Magnesium carbonate — helps reduce cramp risk
  • Calcium carbonate — supports calcium levels and settles stomach acidity
  • Di-potassium phosphate — assists cell and tissue repair
  • Taurine — reduces cramp risk and may ease post-exercise muscle soreness
  • Vitamin B6 — may help with exercise-related nerve discomfort

How to Use

Events: 2 tablets 30 minutes before the start, then 1 per hour of exercise; 2 tablets 30 minutes after finishing and 2 before bed. Daily: 2–4 tablets before bedtime. Phosphate loading: 3 tablets twice daily for the 3 days before an event.

Who It Suits

Endurance runners, cyclists, triathletes, team-sport players in long tournaments, and anyone whose training regularly ends in cramp.

EnduranceHealthHealth & Lifestylehealth & wellbeingHydrationNew Arrivalsno saleRecoveryUSNUSN NutritionVitamins

Trade-only pricing

Login or apply for a trade account to view wholesale rates & margins.

In stock
100% Genuine Import
Available Variants
30 Tabs