Both antidepressants and antianxiety medications (medications for anxiety disorders) are used to treat anxiety disorders. The broad-spectrum activity of most antidepressants provides effectiveness in anxiety disorders as well as depression. The first medication specifically approved for use in the treatment of OCD was the tricyclic antidepressant clomipramine (Anafranil). The SSRIs, fluoxetine (Prozac), fluvoxamine (Luvox), paroxetine (Paxil), and sertraline (Zoloft) have now been approved for use with OCD. Paroxetine has also been approved for social anxiety disorder (social phobia), GAD, and panic disorder; and sertraline is approved for panic disorder and PTSD. Venlafaxine (Effexor) has been approved for GAD.

Antianxiety medications include the benzodiazepines, which can relieve symptoms within a short time. They have relatively few side effects: drowsiness and loss of coordination are most common; fatigue and mental slowing or confusion can also occur. These effects make it dangerous for people taking benzodiazepines to drive or operate some machinery. Other side effects are rare.

Benzodiazepines vary in duration of action in different people; they may be taken two or three times a day, sometimes only once a day, or just on an "as-needed" basis. Dosage is generally started at a low level and gradually raised until symptoms are diminished or removed. The dosage will vary a great deal depending on the symptoms and the individual's body chemistry.

It is wise to abstain from alcohol when taking benzodiazepines, because the interaction between benzodiazepines and alcohol can lead to serious and possibly life-threatening complications. It is also important to tell the doctor about other medications being taken.

People taking benzodiazepines for weeks or months may develop tolerance for and dependence on these drugs. Abuse and withdrawal reactions are also possible. For these reasons, the medications are generally prescribed for brief periods of time--days or weeks--and sometimes just for stressful situations or anxiety attacks. However, some patients may need long-term treatment.

It is essential to talk with the doctor before discontinuing a benzodiazepine. A withdrawal reaction may occur if the treatment is stopped abruptly. Symptoms may include anxiety, shakiness, headache, dizziness, sleeplessness, loss of appetite, or in extreme cases, seizures. A withdrawal reaction may be mistaken for a return of the anxiety because many of the symptoms are similar. After a person has taken benzodiazepines for an extended period, the dosage is gradually reduced before it is stopped completely. Commonly used benzodiazepines include clonazepam (Klonopin), alprazolam (Xanax), diazepam (Valium), and lorazepam (Ativan).

The only medication specifically for anxiety disorders other than the benzodiazepines is buspirone (BuSpar). Unlike the benzodiazepines, buspirone must be taken consistently for at least 2 weeks to achieve an antianxiety effect and therefore cannot be used on an "as-needed" basis.

Beta blockers, medications often used to treat heart conditions and high blood pressure, are sometimes used to control "performance anxiety" when the individual must face a specific stressful situation--a speech, a presentation in class, or an important meeting. Propranolol (Inderal, Inderide) is a commonly used beta blocker.

more about anxiety disorders and antianxiety medications here

Psychotherapeutic Medications for Special Groups

Psychiatric medications for children, women of childbearing age and the elderly. What psychiatric medications are safe and effective? What you need to be aware of.

Children, the elderly, and pregnant and nursing women have special concerns and needs when taking psychotherapeutic medications. Some effects of psychiatric medications on the growing body, the aging body, and the childbearing body are known, but much remains to be learned. Research in these areas is ongoing.

In general, the information throughout this site applies to these groups, but the following are a few special points to keep in mind.

Children

The 1999 MECA Study (Methodology for Epidemiology of Mental Disorders in Children and Adolescents) estimated that almost 21 percent of U.S. children ages 9 to 17 had a diagnosable mental or addictive disorder that caused at least some impairment. When diagnostic criteria were limited to significant functional impairment, the estimate dropped to 11 percent, for a total of 4 million children who suffer from a psychiatric disorder that limits their ability to function.

It is easy to overlook the seriousness of childhood mental disorders. In children, these disorders may present symptoms that are different from or less clear-cut than the same disorders in adults. Younger children, especially, and sometimes older children as well, may not talk about what is bothering them. For this reason, it is important to have a doctor, another mental health professional, or a psychiatric team examine the child.