Lysine is an amino acid (a building block of protein). Unlike some other amino acids, the human body cannot make lysine; therefore, it must be eaten in the diet. Sources of lysine include meat, fish, dairy, eggs, and some plants such as soy and other legumes. People use lysine for cold sores
Thiamine, also known as thiamin or vitamin B₁, is a vitamin found in food and manufactured as a dietary supplement and medication. Food sources of thiamine include whole grains, legumes, and some meats and fish.
Riboflavin, also known as vitamin B₂, is a vitamin found in food and used as a dietary supplement. It is required by the body for cellular respiration. Food sources include eggs, green vegetables, milk and other dairy products, meat, mushrooms, and almonds. Some countries require its addition to grains
Vitamin B6, also known as pyridoxine, is a water-soluble vitamin that your body needs for several functions.
It’s significant to protein, fat and carbohydrate metabolism and the creation of red blood cells and neurotransmitters.
Your body cannot produce vitamin B6, so you must obtain it from foods or supplements.
Most people get enough vitamin B6 through their diet, but certain populations may be at risk for deficiency.
Consuming adequate amounts of vitamin B6 is important for optimal health and may even prevent and treat chronic diseases (Trusted Source).
Vitamin C is one of the safest and most effective nutrients, experts say. Though it may not be the cure for the common cold, the benefits of vitamin C may include protection against immune system deficiencies, cardiovascular disease, prenatal health problems, eye disease, and even skin wrinkling. The tolerable upper intake level (or the maximum amount you can take in a day that likely won’t cause harm) is 2000 mg a day for adults.
Niacin, also known as nicotinic acid, is an organic compound and a form of vitamin B₃, an essential human nutrient. It can be manufactured by plants and animals from the amino acid tryptophan