Insomnia

• Efexor XL may cause you to have trouble falling or staying asleep.
  
  

Headache

• Headaches may occur with the use of Efexor XL.
  
  

Sleepiness

• You may experience feeling more tired or more sleepy than normal.
  
  

Sexual Problems

• Having a lack of interest in sex or being unable to reach climax is a commonly reported side effect of all anti-depressants.
  
  

Loss of Appetite

• A loss of appetite may occur, including eating less or not feeling hungry, at meal times.
  
  

Abnormal Dreams

• Having abnormal dreams has been known to occur while taking Efexor XL.