Hi Alive, I don't know what the situation in Europe is about importing drugs for personal use but believe if you call the phone # above they may help you find a link to the LDN.
I buy Naltrexone 50 mg grind them up and get about 12 doses for each pill. Some of the druggist in India give prescriptions. People have said that they have a drug adiction problem due to the long term pain. People have requested Naltrexone as a treatment for adiction to alcohol or opiates. I would give you my druggest but they are not answering their phone now. If you can find it is is priced reasonably. Best wishes. MW