Asendin nda number?

Asendin is the brand name for amitriptyline, a very old antidepressant. I don’t have the exact US FDA NDA number for Asendin memorized, and older approvals aren’t always easy to recall by number.

If you need the NDA number, best sources are:
- FDA’s Drugs@FDA database: search for amitriptyline (Asendin) and look in the Regulatory History/Original NDA.
- FDA Orange Book (Approved Drug Products with Therapeutic Equivalence): search for amitriptyline; it lists the Original NDA number and related approvals.

If you want, I can guide you step-by-step through the lookup, or you can share the jurisdiction and I’ll tailor the search instructions.