Vitamin D is a nutrient you need for good health. It helps your body absorb calcium, one of the main building blocks for strong bones. Together with calcium, vitamin D helps protect you from developing osteoporosis, a disease that thins and weakens the bones and makes them more likely to break. Your body needs vitamin D for other functions too. Your muscles need it to move, and your nerves need it to carry messages between your brain and your body. Your immune system needs vitamin D to fight off invading bacteria and viruses.

https://ods.od.nih.gov/factsheets/VitaminD-Consumer/

Riboflavin (also called vitamin B₂) is important for the growth, development, and function of the cells in your body. It also helps turn the food you eat into the energy you need.

https://ods.od.nih.gov/factsheets/Riboflavin-Consumer/

Vitamin B₁₂ is a nutrient that helps keep your body's blood and nerve cells healthy and helps make DNA, the genetic material in all of your cells. Vitamin B₁₂ also helps prevent megaloblastic anemia, a blood condition that makes people tired and weak.

https://ods.od.nih.gov/factsheets/VitaminB12-Consumer/

Pantothenic acid (also called vitamin B₅) helps turn the food you eat into the energy you need. It's important for many functions in the body, especially making and breaking down fats.

https://ods.od.nih.gov/factsheets/PantothenicAcid-Consumer/

Magnesium is a mineral that's crucial to the body's function. Magnesium helps keep blood pressure normal, bones strong, and the heart rhythm steady.

https://www.webmd.com/diet/supplement-guide-magnesium#1

A compound needed for the proper functioning of an enzyme, a protein that speeds up the rate at which chemical reactions take place in the body. Coenzyme Q10 is used to produce energy to fuel cell growth and maintenance. Coenzyme Q10 is thought to improve the function of mitochondria, the "powerhouses" that produce energy in cells. Coenzyme Q10 is also an antioxidant, a substance that protects cells from highly reactive chemicals called free radicals that can damage cells and their DNA. The highest amounts of coenzyme Q10 are in the heart, liver, kidneys, and pancreas and the lowest amounts are in the lungs. The levels of coenzyme Q10 normally decline with age.

https://www.medicinenet.com/coenzyme_q10/definition.htm

Taurine is an amino sulfonic acid that occurs naturally in your body. It is particularly concentrated in your brain, eyes, heart and muscles.

Taurine is classified as a conditionally essential amino acid. It serves various important functions in your body.

L Taurine is the L isomer of the taurine molecule. There are two stereoisomers as L Taurine and D taurine. Among them, the most abundant and most important form is the L isomer.

https://www.healthline.com/nutrition/what-is-taurine#what-it-is

https://www.differencebetween.com/difference-between-taurine-and-l-taurine/

L-theanine is an amino acid found primarily in green and black tea and some mushrooms. It's also available in pill, tablet and liquid form.

It's said to help ease anxiety, stress, and reduce insomnia.

https://www.healthline.com/health/l-theanine