"prescribed tramadol 8 x 50g (400mg) daily for tn (trigeminal neuralgia). advantages: reduces pain by about 80%, so can function on a daily basis. appetite suppressant. don&#039;t feel the need to drink alcohol to excess. much calmer, happier and more focused. disadvantages: dry mouth, itching, slight constipation and occasional insomnia. advantages far outweigh disadvantages, in my opinion. would recommend."