Effexor falls into the broad class of antidepressants. It is used for many conditions, including chronic anxiety disorder, as is Cipralex.
By their mechanism, they help to reduce anxiety by establishing a better balance of some of our neurotransmitters, such as serotonin, and also noradrenaline for Effexor, among others.
Whatever the antidepressant, they do not cause dependence as such, but they should not be stopped abruptly after a long intake (we are talking about several weeks to several months). It is true that Effexor must be weaned (stopped gradually) over a longer period of time, but your doctor and pharmacist will be able to provide you with a schedule appropriate to your needs when the time comes.
Ideally, these medications should be started gradually to avoid side effects such as headaches and dizziness. Keep in mind that these side effects are rare and tend to diminish or disappear with time.
Hoping to have answered your question, do not hesitate to contact us if you need more information