Here are some dietary sources: For L-Lysine Dairy products, Meat, poultry, eggs, fish, legumes (lentils, beans), and some nuts and seeds. For Vitamin B Complex: B1 (Thiamine): Whole grains, legumes, nuts, seeds, and lean meats. B2 (Riboflavin): Dairy products, eggs, lean meats, leafy green vegetables, and mushrooms. B3 (Niacin): Meat, poultry, fish, legumes, nuts, seeds, and whole grains. Other B vitamins: Leafy green vegetables, fruits, whole grains, legumes, nuts, seeds, and animal products.