Do not take Kaletra with any of the following medicines: − Astemizole or terfenadine (commonly used to treat allergy symptoms – these medicines may be available without prescription); − Midazolam taken orally (taken by mouth), triazolam (used to relieve anxiety and/or trouble sleeping); − Pimozide (used to treat schizophrenia); − Cisapride (used to relieve certain stomach problems); − Ergotamine, dihydroergotamine, ergonovine, methylergonovine (used to treat headaches); − Amiodarone (used to treat abnormal heart beat); − Vardenafil (used to treat erectile dysfunction); − Products that contain St John’s wort (Hypericum perforatum).