When I should not use Sinequan (Doxepin)?
Do NOT use Sinequan (Doxepin) if: • you are allergic to any ingredient in Sinequan (Doxepin) or to other tricyclic antidepressants • you have certain prostate problems (eg, asymptomatic prostatic hypertrophy), glaucoma, or trouble urinating • you are taking cisapride, clonidine, dofetilide, H1 antagonists (eg, astemizole, terfenadine), or ibutilide, or you have taken a monoamine oxidase (MAO) inhibitor (eg, furazolidone, phenelzine, isocarboxazid) within the past 14 days Contact your doctor or health care provider right away if any of these apply to you.