Agile sludgepak

 is a consumable in the Fallout 4 add-on Far Harbor.

Characteristics
This sludgepak adds 150 rads, but uses one's current level of radiation to determine the increase in action point regeneration for twelve minutes:
 * at more than 150 rads, AP regeneration is boosted by 5 per second,
 * at more than 300 rads, AP regeneration is boosted by 10 per second,
 * at more than 500 rads, AP regeneration is boosted by 15 per second,
 * at more than 800 rads, AP regeneration is boosted by 20 per second.

Locations

 * Agile sludgepaks can be crafted at any chemistry station.