Nutricost Thiamine (Vitamin B1) contains 500 mg of Vitamin b1 in each capsule and 120 capsules in each bottle. Vitamin B1 is found in many foods including yeast, cereal grains, beans, nuts, and meat. It is often used in combination with other B vitamins. Nutricost's Vitamin B1 supplement is non-GMO, gluten free, soy free, and made in a GMP compliant facility. Each batch of every Nutricost product is always tested by independent, ISO-accredited laboratories to insure safety and quality.