What is the difference between ATP and NADPH?

Hint: ATP is an organic compound and hydrotrope that provides energy for many processes in living cells, such as muscle contraction, condensate dissolution, and chemical synthesis. NADPH is a cofactor that is used in anabolic reactions, such as the Calvin cycle and lipid and nucleic acid synthesis, which utilizes NADPH as a reducing agent.

Complete answer:
When ATP is consumed in metabolic processes, it is converted either to adenosine diphosphate (ADP) or to adenosine monophosphate (AMP). The major source of NADPH in the case of animals and other non-photosynthetic organisms is the pentose phosphate pathway. The NADPH system generates free radicals in immune cells by NADPH oxidase which are used to destroy pathogens in a process known as the respiratory burst.
The differences between ATP and NADPH are as follows.


Note: ATP can be used intravenously for heart related conditions. NADPH provides the reducing equivalents for biosynthetic reactions and the oxidation-reduction which are involved in protecting against the toxicity of reactive oxygen species, thereby allowing the regeneration of glutathione. NADPH is also used for anabolic pathways, such as cholesterol synthesis, steroid synthesis, ascorbic acid synthesis, xylitol synthesis, cytosolic fatty acid synthesis and microsomal fatty acid chain elongation