Its the overall personal contents of diet, and what specific contents of this personal diet, that can bring one in in ketosis. There is no specific OTC product that can bring the ketogentic process when the diet is not supporting this goal. I would focus on self study on low-carbohydrate dieting, studying what the body does when low in blood glucose and converting its energy sources. This will gain you understanding more than anything else, and set you in motion to set up a personal program.