You do realize that Singapore executes people for trafficking illegal drugs right?

the only "treatment" he will be getting is a rope around his neck at Changi Prison

Per wikipedia article:
Quote Quoting Misuse of Drugs Act
The Singapore embarkation card contains a warning to visitors about the death penalty for drug trafficking. Warning signs can also be found at the Johor-Singapore Causeway and other border entries.

Under Schedule 2 of the Misuse of Drugs Act,[15][16] any person importing, exporting, or found in possession of more than the following quantities of drugs receives a mandatory death sentence:

1200 grammes of opium and containing more than 30 grammes of morphine (§5 and §7, (2)(b));
30 grammes of morphine (§5 and §7, (3)(b));
15 grammes of diamorphine (heroin) (diamo (§5 and §7, (4)(b));
30 grammes of cocaine (§5 and §7, (5)(b));
500 grammes of cannabis (§5 and §7, (6)(b));
1000 grammes of cannabis mixture (§5 and §7, (7)(b));
200 grammes of cannabis resin (§5 and §7, (8)(b));
250 grammes of methamphetamine (§5 and §7, (9)(b)).