Take 1 capsule daily, preferably with food. It has few or no side effects, but may lead to discoloration in the urine. Some medications, such as tricyclic antidepressants, may reduce the levels of Vitamin B2 in the body, so it is important to supplement.

Do not use if taking any other medications without seeking advice from a healthcare professional. Avoid excessive exposure to UV radiation (e.g., sunlight; tanning) while using this product. If pregnant or nursing, consult a healthcare professional prior to use. Keep out of reach of children. Safety sealed with printed inner seal. Do not use if seal is broken or missing.