Old School Labs Nitric Oxide Booster for Men & Women, Pre-Workout Supplement with HydroNOx™ Citrulline HCl & S7® Blend for Enhanced Blood Circulation, Muscle Pump & Endurance – 150 Vegan Capsules

Price: S$38.55 - S$30.84
(as of Dec 24, 2025 05:32:16 UTC – Details)

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Package Dimensions ‏ : ‎ 5.75 x 2.87 x 2.68 inches; 5.47 ounces
Date First Available ‏ : ‎ November 19, 2024
Manufacturer ‏ : ‎ OLD SCHOOL LABS
ASIN ‏ : ‎ B0DNH3L1N1
Best Sellers Rank: #109,810 in Health & Household (See Top 100 in Health & Household) #214 in Sports Nutrition Nitric Oxide Boosters
Customer Reviews: 4.3 4.3 out of 5 stars (1,231) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });

Triple-Action Blood Flow Matrix – Powered by 2,000 mg HydroNOx Citrulline HCl, S7 plant-based blend, and Agmatine Sulfate, our advanced nitric oxide booster promotes circulation, muscle pumps, and sustained stamina every workout.
Clinically Proven S7 for Pumps & Endurance – Unlike standard nitric oxide supplements, S7 is a blend of natural plant extracts that boost your body’s nitric oxide by up to 230%—supporting stronger blood flow, muscle pumps, and endurance.
Stimulant-Free HydroNOx for Blood Flow & Performance – Our clinically advanced technology boosts nitric oxide production to maximize blood flow, oxygen uptake, and nutrient delivery to muscles—without the jitters of caffeinated pre-workouts.
Faster Recovery, Fewer Aches – Recover quicker with tart cherry + turmeric root. Fight soreness and inflammation so you can train harder, more often, and keep progressing toward your fitness goals.
Hydration for Peak Performance – Prevent cramps and stay energized with a potent electrolyte blend of magnesium, potassium, and Himalayan pink salt—keeping performance strong from start to finish.