A lot of people take drinks that contain caffeine for various reasons. However, the substance has side effects especially when it is taken beyond the body's requirements. Caffeine doesn’t have any nutritional content and it has no taste.
Caffeine is a substance that is naturally obtained from plants and it can be artificially produced as well. Lots of plant seeds contain caffeine like kola nut and coffee beans. There are lots of drugs that you can get over the counter which contain caffeine as it has some health benefits when taken as prescribed. It’s not healthy to consume more than 400 milligrams of caffeine on a daily basis, since it has comes with some nasty consequences.
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http://www.deluxhealth.com/2017/02/what-are-effects-of-caffeine-on-body.html