Like Bignick was saying, it depends on what you eat. If you eat a shit load of eggs, meat and fish and get 400-500g of protein, then you don't need protein supplement. I assumeyou're trying to gain weight. Weight gainer can be used as a meal. I usually take creatin b4 and after my workout.
BTW, you should let us know your age, goal, experience, etc next time so we can help you better.