Hi Blessings!
I've been taking LDN for 20 months now. It was about a month before I could take 4.5 mg. dose.
I was able to convince my GP to Rx it after he read the info I took with me. I printed it straight from the website Kitty mentioned, and highlighted a few key phrases.
He basically shrugged and said, "Its worth a try."
I'll be interested to know what you decide. Good luck!