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There is a Legacy version here.

PFS StandardComprehension ElixirItem 2+

Alchemical Consumable Elixir Mental 
Source Player Core 2 pg. 287
Usage held in 1 hand; Bulk L
Activate [one-action] (manipulate)
This bitter draft opens your mind to the potential of the written word. For the listed duration after drinking this elixir, you can understand any words you read, as long as they're written in a common language. This elixir doesn't automatically allow you to understand codes or extremely esoteric passages—you still need to attempt a skill check to Decipher Writing.

PFS StandardComprehension Elixir (Lesser)Item 2

Source Player Core 2 pg. 287
Price 7 gp
Bulk L
The duration is 1 minute.

PFS StandardComprehension Elixir (Greater)Item 7

Source Player Core 2 pg. 287
Price 54 gp
Bulk L
The duration is 10 minutes.