Hi Barry. I will first say that I am totally unfamiliar with the medical options available to you in Spain and that I am not recommending anything. However, I am now on Day 30 after quitting cold turkey alone. This is not my first time quitting. I was fortunate enough to have an ongoing prescription for anti-anxiety which was very helpful, especially in the first four days - the worst as far as withdrawal symptoms for me. Without violating the terms of this board, I will say that it can be done. I drank tons of water, craved sugar, and had horrid headaches. After the fourth day, I felt so much better - my sleep improved exponentially and each day after that became somewhat easier to get through.
Good luck to you and please keep us informed of your progress. Two days is incredible.