Today, Natural Factors is one of the largest manufacturers of nutritional products in North America. But our origins reach back to the 1950s, and right from day one, we’ve always been fully committed to making products right. We are not a public company with shareholders to impress. Instead, we care about impressing you.

Over the past 50 years, our customers have come to trust Natural Factors products. That trust is built on our dedication to formulating safe and effective products and manufacturing them to the highest quality standards, day in and day out.

Natural Factors - L-Theanine 250mg 90 caps