I couldn't miss the chance to practice my drawing!
Cures certain status effects
Description from Final Fantasy IV: The Complete Collection
Restore Weed (せんじやく, Senjiyaku?, lit. Restoration Medicine) is a Ninjutsu command in Final Fantasy IV: The After Years. It is exclusive to Tsukinowa, and cures Poison, Paralyze , Confuse, Sleep, Blind and Curse from the target. Tsukinowa learns it at Level 21, and it costs 15 MP.
In the 3D release, its description has been updated and now stats:
Removes Poison, Blind, Confuse, Sleep, Curse.
Although there is no mention of it, the Paralyze status can still be cured.