Potion of Diminution [Зелье уменьшения]

Potion, rare

When you drink this potion, you gain the "reduce" effect of the enlarge/reduce spell for 1d4 hours (no concentration required). The red in the potion's liquid continuously contracts to a tiny bead and then expands to color the clear liquid around it. Shaking the bottle fails to interrupt this process.

Source: D&D System Reference Document 5.1, © Wizards of the Coast LLC, licensed under CC BY 4.0.