With questions such as Is there any options to keep someone awake against their will? I voted to close this question because as @Jan points out in the comments, the purpose of the question may be innocuous, but someone else may see and use the answer (even the name of a drug) for unsavoury reasons.
I think there are ethical issues with this question which cannot be adequately addressed other than question closure.
I don't want us to start going down the road of censorship of questions based on subjects we feel unethical as such. There is also a question concerning euthanasia for example (If heroin overdose is so mortal, would it be a reasonable way to do euthanasia?) and whilst it is illegal in most countries, Switzerland for example does allow for it so we can't just close this one on ethical grounds.
However, due to public safety ethics, should we close questions like my prime example for this reason? On the other hand, with the euthanasia question, a drug suggestion for euthanasia is mentioned. Should that be edited out for ethical reasons and put something like
... instead of the currently approved drug(s) for euthanasia.
How should we deal with questions like this and what criteria should we set?