Lexapro is a powerful drug used to treat depression and anxiety. While it can be very effective, it may also cause side effects. Be sure to tell your doctor about other health conditions you have and medications you take before starting Lexapro. This information can help your doctor reduce your chance of side effects. Also tell your doctor if you do have any side effects. If you can’t tolerate the effects, your doctor may change your medication. Keep in mind that Lexapro and other drugs in its class cause many of the same side effects.
Benzodiazepine therapy can give rise to physiologic and psychologic dependence based on the drug's dosage, duration of therapy and potency. 1 Thus, dependence will develop sooner (such as in one to two months) in a patient who is taking a high dosage of a high-potency agent such as alprazolam than in a patient who is receiving a relatively low dosage of a long-acting, low-potency agent such as chlordiazepoxide. As a result of physiologic dependence, withdrawal symptoms emerge with rapid dose reduction or abrupt discontinuation of the drug.