According to Le Chatelier's principle, if their is a disturbance in equilibrium condition then the position of equilibrium shifts to oppose the disturbance in the equilibrium.
The addition of more reactants to the system shifts the equilibrium to the right.
The addition of more products to the system shifts the equilibrium to the left.
Using the same logic, we can assume that by adding a product to a system, the equilibrium will shift left.
The above notion is explained through below diagram:
