Here are some dietary sources:For L-LysineDairy 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.