Item Panels allow Roxas to use Items during Missions. He can only use as many Items as he brings with him before embarking from the Grey Area, and you must go back into the Panel Menu to replenish any used Items after each Mission. Below is a list of each type of Item Panel, its buy price, sell price, as well as rank requirements, its effects, and how to obtain it.
Potion
Buy: 90 Hearts (Novice Rank)
Sell: 10 Hearts
Obtained: Missions 1-30, 32-25, 38, 42-45, 48-50, 53, 56, 58-60, 77, 89, 90; Moogle Shop freebie
Effect: Restores 30% of your HP
Hi-Potion
Buy: 360 Hearts (Agent Rank)
Sell: 20 Hearts
Obtained: Missions 9, 21, 22, 24, 26-28, 30, 32, 34, 35, 38, 43-46, 48-51, 53, 55-59, 61, 63-65, 67-70, 73-80, 82-87, 89-93; Synthesis; Moogle Shop Freebie
Effect: Restores 50% of your HP
Mega-Potion
Buy: 400 Hearts (Master Rank)
Sell: 200 Hearts
Obtained: Synthesis; Moogle Shop Freebie
Effect: Restores 40% HP to all players on the same map
Ether
Buy: 180 Hearts (Rookie)
Sell: 40 Hearts
Obtained: Missions 4, 9, 16-20, 22-25, 27-29, 31, 33-35, 38, 42-44, 47, 49-52, 54, 61, 64, 70, 71, 77; Moogle Shop Freebie
Effect: Restores 1 cast for each of your Magic
Hi-Ether
Buy: 480 Hearts (Agent Rank)
Sell: 100 Hearts
Obtained: Missions 44, 67-69, 73-75, 79, 80, 82-84, 87-93; Synthesis; Moogle Shop Freebie
Effect: Restores 2 casts for each of your Magic
Mega-Ether
Buy: 640 Hearts (Master Rank)
Sell: 400 Hearts
Obtained: Synthesis; Moogle Shop Freebie
Effect: Restores one cast of each Magic to all players on the same map
Elixir
Buy: – – – – –
Sell: 1000 Hearts
Obtained: Missions 48, 64, 73, 80, 83, 84; Synthesis; Moogle Shop Freebie
Effect: Fully restores your HP and Magic
Megalixir
Buy: – – – – –
Sell: 2000 Hearts
Obtained: Synthesis; Moogle Shop Freebie
Effect: Fully restores the HP and Magic of all players on the same map
Panacea
Buy: 120 Hearts (Rookie Rank)
Sell: 1400 Hearts
Obtained: Missions 15-18, 20, 22, 27, 28, 35, 36, 39-41, 44, 46, 53, 58, 70, 74, 75, 89, 92; Moogle Shop Freebie
Effect: Cures all Status Ailments
Limit Recharge
Buy: – – – – –
Sell: 1000 Hearts
Obtained: Synthesis; Moogle Shop Freebie
Effect: Replenishes the upper limit of your Limit Gauge by 1 notch