Oomph Powder (Dragon Quest II)

Significantly increases a single ally’s attack. Consumed upon use.

This is an item.
It significantly increases a single party member’s attack power when used as an item in battle.
It is consumed upon use.
It can be sold for 280 gold coins.

X: 3665 Y: 10437

Located in the pot in the northwest corner of the Item Shop, by the stove.

X: 11778 Y: 3768

Examine the ground next to the seaweed.

X: 13465 Y: 6670

Search the leftmost chest in the room on the right in the Shrine East of Slewse.

X: 14461 Y: 4465

Examine the ground at the back of the tower for the item.

X: 16992 Y: 9230

Found in the sparkly spot on the floor of the seabed shallows.