Avoid drinking alcohol. It can cause dangerous side effects when taken together with clomipramine. This medication may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert.verdose symptoms may include vomiting, fast or uneven heart rate, loss of balance or coordination, extreme drowsiness, fever, severe sweating, stiff muscles, increased or decreased urination, blue lips or fingernails, weak or shallow breathing, fainting, seizure (convulsions) or coma.