My symptoms fit identical with low oxytocin - With very low empathy, no orgasm and the symptoms:

1. Poor communication,
2. An element of irritability and inability to feel affectionate,
3. More anxieties and fears than normal,
4. Sexual interactions are more mechanical and fulfil a basic need,
5. Difficulty achieving orgasm, (haven't for years) 
6. Bigger appetite for sugar-rich foods

I want to try and increase my oxytocin to see if it helps. I've tried increasing serotonin and dopamine, but never oxytocin and yet that is the symptoms I suffer. 

I've read vitamin C, D, magnesium all increase it and been low in those can cause low oxytocin. Also depression or autism can cause low oxytocin - again I feel this..

I want to try a oxytocin spray, but not sure where to get one in Uk? Anyone had success about the above?