My mum is spending many hours a day very upset and anxious. She still lives alone at home and currently has lunch support visiting. She is very defiant about her condition and resents having any kind of support. She also refuses to take any medicines as she believes all medicine is poison. I have the health power of attorney but mum has not yet been deemed to have lost mental capacity. Can i sanction the giving of a mild sedative covertly in conjunction with health/social care professionals at this stage?