Before taking clomipramine, tell your doctor or pharmacist if you are allergic to it; or to other tricyclic antidepressants (e.g., imipramine, nortriptyline); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details. Tell the doctor right away if you notice worsening depression/other psychiatric conditions, unusual behavior changes (including possible suicidal thoughts/attempts), or other mental/mood changes (including new/worsening anxiety, panic attacks, trouble sleeping, irritability, hostile/angry feelings, impulsive actions, severe restlessness, very rapid speech). Be especially watchful for these symptoms when a new antidepressant is started or when the dose is changed. This drug passes into breast milk and may have undesirable effects on a nursing infant. Consult your doctor before breast-feeding. Some products that may interact with this drug include anticholinergics (e.g., atropine, belladonna alkaloids, scopolamine), certain drugs for high blood pressure (e.g., clonidine, guanethidine), cisapride, digoxin, thyroid supplements, valproic acid, drugs that can cause bleeding/bruising (e.g., "blood thinners" such as warfarin/heparin, anti-platelet drugs including aspirin or NSAIDs such as ibuprofen).