Ogden, UT. Since 1992, Capstone companies have been conceiving, developing, producing, and packaging a wide range of capsule, tablet, powder and OTC products for a variety of customers in the United States and internationally. Capstone is well known for its exceptional quality, and maintains several industry certifications recognizing its high manufacturing standards, including NSF GMP, NSF for Sport, and Australia's Therapeutic Goods Administration ("TGA") certification.