Swallowed M80 is an unlockable trinket in The Binding of Isaac, added in the Repentance DLC.

Isaac has a 50% chance to explode upon taking damage, and deal 185 damage to nearby enemies.

The explosion uses Isaac's bomb synergies.

The explosion can also trigger when playing Blood Donation Machines, Devil Beggars, etc. It cannot destroy a Blood Donation Machine, and it instead makes it drop some coins and hearts.

This page shows information as of the latest Repentance release.
To see latest up-to date information about this trinket for the new Repentance+ (Online Co-op) DLC, check this page instead.

Defeat Mother as Tainted Samson.

Swallowed M80 can be found in the following item pools:

The following special synergies and interactions for Swallowed M80 have been documented.

* Note that not all possible synergies and interactions are listed here.

• Check out the trinket description on the external Isaac Wiki.