Large blue capsul ## I have identified a blue capsule with the imprint Andrx 700 on one end and 360mg on the other as Taztia XT (Diltiazem). It is a (360 mg) pill like the imprint states. Taztia XT (Diltiazem) is a nondihydropyridine (non-DHP) member of the class of drugs known as calcium channel blockers, used in the treatment of hypertension, angina pectoris, and some types of arrhythmia. It is also an effective preventive medication for migraine. You can learn more about this drug on the page for Taztia XT Details I hope this helps. Please post back if you have any additional questions!