Potion of Growth

When you drink this potion, you and any item
you wear or carry double in all dimensions for
1d4 hours, or until dropped. Your weight is
multiplied by eight and your size category go up
by one. You have advantage on Strength checks
and Strength saving throws, and deal 1d4 extra
damage with your enlarged weapon.
The red in the potion's liquid continuously expands
from a tiny bead to color the clear liquid around
it and then contracts.