Singapore has a very strict law against drug traffiking, which carries a mandatory death sentence. This is applied to every person entering the country, locals and foreigners. It also applies to those who are in transit, that is to day, if you are caught in Singapore while you are changing flights. You are also not allowed to have drugs in your system, and could be caught if spot urine tests comes out positive.
If you are under any form of medication, you should bring along the presciptions. In case of doubt, obtain prior permission from the
Health Sciences Authority before bringing in sedatives or painkillers.
The death penalty for drug offences has come under much criticism, with many saying that those on death row are often drug mules and even with the law in place, it has not solved the drug problem in Singapore. The mandatory death sentences have been criticised as being "over-inclusive" and "unavoidably violating human rights laws" by the UN Human Rights Countil (29 January 2007) Report of the Special Rapporteur on extrajudicial, summary or arbitrary executions. Nevertheless, it is surprising to note that the number of executions for drug offences are quite low - only 2 in 2008 and 3 in 2009 (Source: Singapore Prison Service, Annual Report 2010; Harm Reduction International, www.ihra.net).