| Item | Location | Description |
| Antidote | Pokémon Mart | Cures Poison |
|
Awakening | Pokémon Mart | Cures Sleep |
|
Bicycle | Cerulean City--Bike Shop | Used to travel faster |
| Bike Voucher | Vermilion City--Department Store | Used to buy bike |
|
Burn Heal | Pokémon Mart | Heals burns |
| Calcium | Celadon City--Department Store | Boosts Special rating |
|
Carbos | Celadon City--Department Store | Boosts Speed rating |
| Card Key | Saffron City--Silph Co. | Open Silph Co. doors |
|
Coin | Celadon City | Used to play slot machines |
| Coin Case | Celadon City | Holds coins |
|
Dire Hit | Celadon City--Department Store | Boosts attack effectiveness |
| Dome Fossil | Mt. Moon | Used to clone new Pokémon |
|
Elixer | Various Areas | Gives 10 PP to all abilities |
| Escape Rope | Pokémon Mart | Used to escape current area |
|
Ether | Various Areas | Gives 10 PP to one ability |
| Exp. All | Route 15 | Used to share exp. points |
|
Fire Stone | Celadon City--Department Store | Triggers evolution |
| Fresh Water | Celadon City--Department Store | Quenches thirst, restores 50 HP |
|
Full Heal | Pokémon Mart | Cures any condition |
| Full Restore | Pokémon Mart | Cures, Restores all HP |
|
Gold Teeth | Fuchsia City--Safari Zone | Helps Warden speak |
| Good Rod | Fuchsia City | Used to fish for Pokémon |
|
Great Ball | Pokémon Mart | Used to catch Pokémon |
| Guard Spec. | Celadon City--Department Store | Disables Special attacks |
|
Helix Fossil | Mt. Moon | Used to clone new Pokémon |
| HP Up | Various Areas | Boosts HP meter by one point |
|
Hyper Potion | Pokémon Mart | Restores 200 HP |
| Ice Heal | Pokémon Mart | Thaws frozen Pokémon |
|
Iron | Celadon City--Department Store | Boosts Defense rating |
| Item Finder | Route 11 | Exposes hidden items |
|
Leaf Stone | Celadon City--Department Store | Triggers evolution |
| Lemonade | Celadon City--Department Store | Quenches thirst. restores 80 HP |
|
Lift Key | Celadon City--Game Corner | Activates elevator |
| Master Ball | Saffron City--Silph Co. | Used to catch Pokémon |
|
Max Elixer | Various Areas | Restores all PP |
| Max Ether | Various Areas | Restores all PP to one ability |
|
Max Potion | Pokémon Mart | Restores all HP |
| Max Repel | Pokémon Mart | Prevents random attacks |
|
Max Revive | Various Areas | Revives and restores all HP |
| Moon Stone | Various Areas | Triggers evolution |
|
Nugget | Various Areas | Can be sold for money |
| Oak's Parcel | Viridian City--Pokémon Mart | Belongs to Professor Oak |
|
Old Amber | Pewter City--Museum | Used to clone new Pokémon |
| Old Rod | Vermilion City | Used to fish for Pokémon |
|
Paralyze Heal | Pokémon Mart | Cures paralyze |
| Poké Ball | Pokémon Mart | Used to catch Pokémon |
|
Poké Doll | Celadon City--Department Store | Distracts opponent |
| Poké Flute | Lavender Town--Pokémon Tower | Wakes sleeping Pokémon |
|
Pokédex | Pallet Town | Used to store Pokémon data |
| Potion | Pokémon Mart | Restores 20 HP |
|
PP Up | Various Areas | Boosts PP meter by one point |
| Protein | Celadon City--Department Store | Boosts Attack rating |
|
Rare Candy | Various Areas | Boosts Experience level |
| Repel | Pokémon Mart | Prevents random attacks |
|
Revive | Pokémon Mart | Revive fainted Pokémon |
| S.S. Ticket | Sea Cottage | Used to board S.S. Anne |
|
Safari Ball | Fuchsia City--Safari Zone | Used in the Safari Zone |
| Secret Key | Cinnabar Island--Pokémon Research | Opens Cinnabar Island Gym |
|
Silph Scope | Celadon City--Game Corner | Used to identify ghosts |
| Soda Pop | Celadon City--Department Store | Quenches thirst, restores 10 HP |
|
Super Potion | Pokémon Mart | Restore 50 HP |
| Super Repel | Pokémon Mart | Prevents random attacks |
|
Super Rod | Route 12 | Used to fish for Pokémon |
| Thunder Stone | Celadon City--Department Store | Triggers evolution |
|
Town Map | Pallet Town | Map of the entire game |
| Ultra Ball | Pokémon Mart | Used to catch Pokémon |
|
Water Stone | Celadon City--Department Store | Triggers evolution |
| X Accuracy | Celadon City--Department Store | Boost Accuracy temporarily |
|
X Attack | Celadon City--Department Store | Boost Attack temporarily |
| X Defend | Celadon City--Department Store | Boost Defense temporarily |
|
X Special | Celadon City--Department Store | Boost Special temporarily |
| X Speed | Celadon City--Department Store | Boost Speed temporarily |