Kratom Side Effects. Ever tried kratom? It is described by the Centers for Disease Control (CDC) as an “emerging public health threat”. On the other hand, kratom users (or shall we call them kratom enthusiasts?) are defending the plant for its medicinal properties. Among others, it can apparently relieve pain, help heal wounds, and treat cough and diarrhea. Moreover, Kratom has been traditionally used in Southeast Asia to “increase energy, appetite, and sexual desire”.