WNUSP advocates against forced psychiatry which is regarded as torture or cruel, inhuman and degrading treatment or punishment.
The UN Treaty that is directly relevant to this issue is UN Convention on Torture 1984
There are 2 UN Mechanisms that deal with issues around torture: UN Committee On Torture and the Sub Committee on the Prevention of Torture
Article 15 of the CRPD outlines freedom from torture or cruel, inhuman or degrading treatment or punishment:
“No one shall be subjected to torture or to cruel, inhuman or degrading treatment or punishment. In particular, no one shall be subjected without his or her free consent to medical or scientific experimentation.”