There are no dangerous side effects known from infrequent use of kratom at usual dosages. It is possible to get overdosed on Kratom, resulting in nausea, mild hallucinations, short time semi paralysis and loss of consciousness. It is possible to get addicted to Kratom after long time daily use at high doses. Such cases seem to be rare however and the withdrawal from kratom obviously is less difficult than the withdrawal of cocaine of heroin addiction. The few that have experienced Kratom withdrawal often report it to be similar to coffee/caffeine withdrawals for a short period (often only 2 days).