FDA pharmacologic class
Acetylcholine Release Inhibitor
3 medicines are in FDA's class of acetylcholine release inhibitors: botulinum toxin type a (Botox), letibotulinumtoxina (Letybo) and rimabotulinumtoxinb (Myobloc). 0 of the 3 are listed from generic labelers (FDA NDC Directory, October 8, 2026).
Which medicines are acetylcholine release inhibitor?
| Medicine | Brand names | Generic labelers (all forms) | Pharmacy cost | Boxed warning | Shortage | Recalls since 2012 |
|---|---|---|---|---|---|---|
| Botulinum toxin type a | Xeomin, Botox, Dysport | none listed | n/a | Yes | No current entry | 0 |
| Letibotulinumtoxina | Letybo | none listed | n/a | Yes | No current entry | 0 |
| Rimabotulinumtoxinb | Myobloc | none listed | n/a | Yes | No current entry | 0 |
Source: FDA Established Pharmacologic Class (NDC Directory, openFDA); CMS NADAC of October 7, 2026; FDA shortages and recalls (FDA files October 8, 2026)