The following is a list of items the player's character can use in Final Fantasy Mystic Quest.
Consumable items are bought or found in brown chests, and can be used in battle and on the field. The player can hold up to 99 of each item. The Cure potion formula is:
|Cure||Restores target's HP.|
|Heal||Removes target's status ailments.|
|Refresher||Restores the stat(s) losses during battle.|
|Seed||Fully restores target's MP.|
Key items are either found or given by NPCs and are used automatically under the correct circumstances.
|Captain's Cap||Given by Kaeli, give to Captain Mac.|
|Elixir||Given by Tristam after completing the Bone Dungeon, used to cure Kaeli.|
|Magic Mirror||Found inside the Ice Pyramid, reveals the invisible monster inside the Ice Pyramid.|
|Mask||Found on the slopes of the Volcano, reveals monsters hidden within the gas on the Volcano slopes.|
|Multi-Key||Given by Tristam in Fireburg, used to unlock Reuben's father's friend's door.|
|Thunder Rock||Given by Reuben's father Arion, used to power up Otto's Rainbow Bridge Machine.|
|Tree Wither||Given by an old man in Level Forest, used to convince Kaeli to help Benjamin.|
|Venus Key||Given by Spencer, used to unlock the chest containing the Venus Shield in the Focus Tower.|
|Wakewater||Given by the old man in Libra Temple, used to unthaw a plant in Aquaria.|
Each type of crest allows the corresponding type of warp panel to be used. Collecting all the crests is needed to complete the game.
|Libra Crest||Found in the Wintry Cave after defeating Squidite. Allows Libra Panels to be used.|
|Gemini Crest||Found in a Battlefield near Fireburg. Allows Gemini Panels to be used.|
|Mobius Crest||Found in Spencer's Place via the Rainbow Bridge access. Allows Mobius Panels to be used.|
Each Coins unlocks a specific door inside the Focus Tower.
|Sand Coin||The Sand Coin is guarded by the Skullrus Rex and opens the Earth Door found within Focus Tower.|
|River Coin||The River Coin is guarded by the Ice Golem and opens the Water door found within Focus Tower.|
|Sun Coin||The Sun Coin is guarded by the Dualhead Hydra and opens the Fire door found within Focus Tower.|
|Sky Coin||The Sky Coin is guarded by Pazuzu and opens the Wind door found within Focus Tower.|