I have been on tarceva for 3 months & have experienced skin & gastric reflux side effects. I still have them but have found a few helpful tips: For the skin problems I have used Aveeno bath oil, (a good 10-15 min soak each night in a warm -not hot bath). For the spots 2.5% hydrocortisone cream, via GP, has worked for me.For other skin rashes Aveeno cream is very soothing, but so is double base gel, & E45 itch relief cream (on presecription), For toe nail problems-(paronychia), I found Sudocrem massaged into the skin & nails really helped.
Other things like cotton jersey sheets & clothes with as much cotton content as possible have helped make life a bit more comfortable.
As far as the gastric reflux is concerned I cannot take the usual medication like lanzoprazole & omeprazole, but have found cemetidine to be effective for a while, when its effects begin to wane I swithch to ranitidine for a while. I also discovered a natural remedy that has been helpful, 1teaspoon of honey mixed with two teapoons of apple cider vinegar (mother strength) in warm water. I have also found that eating my main meal in the middle of the day & a light meal at night keep the symptoms to a minimum.
I hope that these tips may help others in a similar situation,I found them out by trial & error as there seems to be a dearth of this type of practical advice generally. If anyone knows of other thigs to try that have worked for them please let me know.
Good luck everyone