There are several different types of drugs available to treat mental illnesses. Some of the most commonly used are antidepressants, anti-anxiety, anti-psychotic, mood stabilizing, and stimulant medications.
What Drugs Are Used To Treat Depression?
When treating depression, several drug options are available. Some of the most commonly used include:
- Selective serotonin reuptake inhibitors (SSRIs), such as Prozac, Zoloft, Paxil, Celexa, Lexapro, and Luvox
- Selective serotonin & norepinephrine inhibitors (SNRIs), such as Effexor, Cymbalta, Khedezla, Pristiq, and Fetzima
- Novel serotonergic drugs such as Trentellix (formerly called Brintellix) or Viibryd
- Older tricyclic antidepressants, such as Elavil, Pamelor, Sinequan, and Imipramine
- Drugs that are thought to affect mainly dopamine and norepinephrine such as Wellbutrin
- Monoamine oxidase inhibitors (MAOIs), such as Nardil, Parnate, and Emsam
- Tetracyclic antidepressants that are noradrenergic and specific serotonergic antidepressants (NaSSAs), such as Remeron
Your health care provider can determine which medication is right for you. Remember that medications usually take 4 to 6 weeks to become fully effective. And if one drug does not work, there are many others to try.
In some cases, a combination of antidepressants may be necessary. Sometimes an antidepressant combined with a different type of drug, such as a mood stabilizer (like Lithium), a second antidepressant, or atypical anti-psychotic drug, is the most effective treatment.
Side effects vary, depending on what type of drug you are taking, and may improve once your body adjusts to the medication.
If you decide to stop taking your antidepressants, it is important that you gradually reduce the dose over a period of several weeks. With many antidepressants, quitting them abruptly can cause discontinuation symptoms or speed the risk for depression relapse. It is important to discuss quitting (or changing) medications with your health care provider first.
What Drugs Treat Anxiety Disorders?
Antidepressants, particularly the SSRIs, may also be effective in treating many types of anxiety disorders.
Other anti-anxiety medications include the benzodiazepines, such as Valium, Ativan, and Xanax. These drugs carry a risk of addiction, so they are not as desirable for long-term use. Other possible side effects include drowsiness, poor concentration, and irritability.
Finally, some conventional as well as atypical antipsychotic drugs have been shown to reduce anxiety symptoms in the context of treating depression or psychosis, and may also sometimes be used "off label" as treatments for anxiety.
What Drugs Treat Psychotic Disorders?
Antipsychotics are a class of drugs used commonly to treat psychotic disorders -- conditions in which thinking can be irrational, and people have false beliefs (delusions) or perceptions (hallucinations) -- and sometimes to treat mood disorders such as bipolar disorder or major depression. Different antipsychotics vary in their side effects, and some people have more trouble with certain side effects than with others. The doctor can change medications or dosages to help minimize unpleasant side effects. A drawback to some antipsychotic medications is their potential to cause sedation and problems with involuntary movements as well as weight gain and changes in blood sugar or cholesterol, which require periodic laboratory monitoring.
Many side effects of anti-psychotic drugs are mild and many go away after the first few weeks of treatment. Common side effects may include:
- Rapid or irregular heartbeat
- Dizziness when changing positions
- Decrease in sexual interest or ability
- Problems with menstrual periods
- Skin rashes or skin sensitivity to the sun
- Weight gain
- Muscle spasms
- Restlessness and pacing
- Slowing down of movement and speech
- Shuffling walk
- Menstrual irregularities in women
There are, however, a few serious side effects that are possible, especially with long-term use of anti-psychotic medications. These side effects include:
- Tardive dyskinesia : This is a movement disorder that results in unusual and uncontrollable movements, usually of the tongue and face (such as sticking out the tongue and smacking the lips), and sometimes jerking and twisting movements of other parts of the body.
- Neuroleptic malignant syndrome : This is a potentially fatal disorder characterized by severe muscle rigidity (stiffening), fever, sweating, high blood pressure, delirium, and sometimes coma.
- Agranulocytosis : This is a condition marked by a sharp decrease in the number of infection-fighting white blood cells. This condition can leave the person prone to infection and at greater risk of death. Agranulocytosis has been particularly linked with Clozaril, where it may occur in 1 in 100 patients. People taking Clozaril must have regular blood tests to closely monitor their white blood cell count. However, all antipsychotics carry a warning label from the FDA noting that as a class they have a risk for lowering someone's white blood cell count.
- Changes in Blood Sugar and Cholesterol : Some atypical antipsychotics can cause increases in blood sugar (which could eventually lead to diabetes) and blood lipids such as cholesterol and triglycerides. Periodic blood tests are necessary to monitor these factors.
If antipsychotic drug side effects are particularly troublesome, your doctor may change medications or dosages or sometimes add additional medicines to counteract side effects like weight gain or high blood lipids. The newer atypical antipsychotic medications appear to be much better tolerated, with fewer side effects such as movement disorders or drowsiness. They do, though, require monitoring for weight and metabolic risks, which appear to be higher than with older-generation anti-psychotics.
What Drugs Treat Attention Deficit Hyperactivity Disorder?
Another group of drugs called stimulants may be used for certain disorders, primarily attention deficit hyperactivity disorder (ADHD). The most commonly used stimulants include Ritalin, Dexedrine, Adderall, and Vyvanse.
A class of drugs, called alpha agonists, are nonaddictive medicines that are also sometimes used to treat ADHD. Examples include clonidine (Catapres) and guanfacine (Intuniv).
The FDA requires all ADHD drugs to include patient medication guides that detail serious outcomes from the use of the drugs, including a slightly higher risk of stroke, heart attack and sudden death, and psychiatric problems like becoming manic or psychotic.
The agency has also issued warnings that children and teens who take the non-stimulant ADHD drug atomoxetine (Strattera) may have suicidal thoughts.
What Drugs Treat Mental Illness in Children?
Many drugs used to treat mental disorders in adults are also used to treat the same illnesses in children. However, doctors often reduce the doses given.
The FDA has determined that antidepressant drugs can increase the risk of suicidal thinking and behavior in children and adolescents with depression and other psychiatric disorders. If you have questions or concerns, discuss them with your health care provider.
Can Drugs Cure Mental Illness?
Drugs cannot cure mental illnesses. Rather, they work to control many of the most troubling symptoms, often enabling people with mental disorders to return to normal or near-normal functioning. Reducing symptoms with medication can also enhance the effectiveness of other treatments, such as psychotherapy (a type of counseling).