Are there any possible side effects to consuming raw cacao?

No. However, excessive intake of raw cacao powder (around 2 tablespoons or more a day) can lead to excessive stimulation of the central nervous system, brain and heart due to the presence of theobromine (a mild stimulant) in cacao. This will make us feel hyperactive followed by drowsiness. Theobromine has a mild diuretic effect. Cocoa is harmful for cats and dogs as they don’t have the enzymes to metabolize theobromine.