Barbiturates: These are a group of central nervous system depressants that slow down brain function. These medicines have been used to treat anxiety and to prevent epileptic seizures. They are commonly abused; examples are phenobarbital and secobarbital.
What Should I Do If I Think My Medicine Causes Depression or Mania?
Be sure to discuss with your doctor any concerns you may have about how a medicine might be affecting your mood. When a medicine does produce symptoms of mania or depression, your doctor may recommend discontinuing the drug or reducing the dosage (if possible). If this is not possible, your doctor may treat the manic or depressive symptoms with other drugs.