Zahler is a third-generation family company proudly continuing the work of legendary founder, Rachel Zahler, PhD. Growing from her inspiring, one-on-one consultation service, the Zahler family felt the need for better, more innovative, smarter nutritional solutions. Zahler's nutritional supplements are rooted in nature's organic bounty. Manufactured and bottled in a state-of-the-art GMP-certified facility in the USA, every ingredient and finished formula is analyzed and tested to ensure purity and potency.