Given the task definition and input, reply with output. In this task, you're given a review from Amazon's food products. Your task is to generate a rating for the product on a scale of 1-5 based on the review. The rating means 1: extremely poor, 2: poor, 3: neutral or mixed, 4: good, 5: extremely good.

I've tried 5-hour energy, red rain, NOS, and other energy shots. This is my favorite in terms of taste and effect. Plus, it's somewhat reassuring to know that natural ingredients are used. Sometimes I wonder what I'm really putting into my body with some of the other brands. I purchase a box about once every 2 months for the past 2 years.
5