What is the full form of nadh?

The full form of NADH is Nicotinamide Adenine Dinucleotide. The 'H' at the end means it is holding a hydrogen. It is a very important molecule in our body. It is found inside all our cells. Its main job is to carry energy around. You can think of it like a small battery for the cell. It helps our body make ATP. ATP is the main energy currency for all life. So, NADH is a very key part of making energy for us to live. Hope this helps.