Something that palliates, particularly a palliative medicine.
Serving to palliate; serving to extenuate or mitigate.
Minimising the progression of a disease and relieving undesirable symptoms for as long as possible, rather than attempting to cure the (usually incurable) disease.
An agent or drug that sedates, having a calming or soothing effect, or inducing sleep.
Calming, soothing, inducing sleep, tranquilizing