it was recommended to me from another chronic pain sufferer. I live in panama and my mother bought the 2g/5ml ampules. How should it be administered, intramuscular or intravenously? Is it good for pain? I take lyrica 300mg and tramadol sometimes, but my pain has broken thru and i can't control it right now... doctors here prescribe ketophren, diclofenac, sleeping pills etc, will not prescribe anything for my pain when it gets out of control, the emergency room here is closed today or iwould be there... help please, don't want to take shot and have it not work or worse kill me