I'm planning on taking lamotrigine sertraline citalopram paracetamol and ibuprofen tonight. will this end my misery for good?

Get help now: Such a combination is not likely to be lethal but instead would make you feel very sick and could cause long term health problems. You should get help right away. Tell a trusted friend or a healthcare provider about your thoughts or go to your nearest emergency room if you have no where else to turn. Here are some resources in the uk: http://www.Nhs.Uk/conditions/suicide/pages/getting-help.Asp.

Suicidal: Suicide is a very permanent solution. If considering suicide, please call your physician who's prescribing these medications, call 911, or go to an emergency room now. There are also suicide prevention lifelines -- one is 1-800-273-8255.