About Us

Built for the Athlete Who Can't Afford Extra Weight

Jockeys face one of the most demanding physical challenges in all of sport: perform at peak athletic levels while maintaining a weight limit that can mean the difference between racing and not racing. The consequences of improper hydration are real — cramping, fatigue, impaired focus — but traditional sports drinks come loaded with water weight that can cost you a weigh-in.

Rein Hydration was created specifically for that problem. We are a company founded by people who understand what it means to compete at weight, and we knew there had to be a better way to hydrate.

Our Formula

Rein Hydration Electrolyte Powder is engineered with low osmolality — meaning it absorbs rapidly into your cells without requiring large volumes of water. Just mix one scoop with 8 oz of water and you get rapid, efficient electrolyte replenishment sourced from premium Redmond Ancient Utah Sea Salt. No artificial colors. No artificial flavors. No unnecessary bulk.

Our formula delivers clinical-grade sodium (450 mg), potassium (180 mg), and chloride (700 mg) per serving, along with 1042% of your daily Vitamin B12 to support energy — without caffeine or stimulants. Just pure, effective hydration at 10 calories per serving.

Our Mission

We launched with one product and one focus: give jockeys and weight-sensitive athletes a hydration solution that actually works for their lifestyle. As we grow, we plan to expand our product line with more solutions engineered specifically to keep jockeys and equestrian athletes at their healthiest and most competitive. Because the sport demands it, and you deserve it.

Manufactured in an FDA CGMP compliant facility. Made in the USA.

Website: reinhydration.com