Hello,
I know that most of you didn't experience any side effects but it definitely happened to me.
I started taking LDN recommended by my acupuncturist to boost my immune system and get healthier quickly. Before that I have been on Special Carbohydrate Diet and I don't eat any grain, gluten, dairy, soy related foods because I feel bad because of them. After 1,5 year I was quite successful with my diet and I felt much better, I had great mood, a lot of energy, I slept well. My motivation magically was back and I was pretty active again.
I took LDN at dose 4,5mg for couple of days at night time. On the first day after I felt much better, had more energy to do things and I was in better mood. But on the second day and next one I felt much much worse than before taking it. I was extremely fatigued, I couldn't sleep and what is the worst my emotions became very strong and intense, I became angry with everyone and everything and the word angry is a very subtle word to describe it. I was furious to such a degree that I couldn't work and my work requires a lot of patience and a peaceful mind. I read several forums about LDN and possible reactions and found that it can be: the first stage after which it goes better which I doubt is the case due to the strong reaction, or it can be a severe side effect where it is suggested to take lower dose instead. So I decided to stop LDN and see what will happen. After like 5 days everything came back to norm. I felt good, slept well, my happiness and motivation where back. But I still wanted to try LDN with lower dose and I took 1mg for maybe three days. Again bad side effects came back. That was just too much for me. I can stand the initial stage where I feel worse but this was way too much! Obviously my body didn't respond well to naltrexone. I found somewhere a post that in some people naltrexone isn't discarded by body as it should and instead of having more endorphines you have less. This is exactly how I feel.
The big problem is that after stopping taking LDN these side effects didn't go! And it lasts couple of months now... I sleep pretty bad and wake up tired, my motivation and inner sense of happiness are totally gone. I figured it should go away after couple of days like it happened before but it didn't! I don't know what to do now. My acupuncturist doctor said it is impossible that LDN did it and didn't give me any advice with the problem that it caused. He was completely indifferent and left me with nothing. There is one more thing which may be important. I noticed that after drinking alcohol I feel much better on the next day. Better sleep, mood, energy, just like I felt before before. Alcohol suppose to support endorphine release. So I think maybe something is wrong with my endorphines because of LDN, maybe something is blocked in my body. I am not a doctor, just an observer so I can't know for sure what happened here. For now this is the only conclusion I got but it unfortunately doesn't solve the problem. I can't take myself back to the serene state I was before taking LDN. I monitor my diet very carefully and I didn't start any new food or medicine at that time, so it definitely goes to LDN. I do not know any doctor around that could help me with that.
I know that this is probably one case in a million, but it happened and I will deeply appreciate any advice.