Laudanum

A powerful sedative used to sooth fear and pain. This brown liquid dulls your senses, muffles your thoughts and makes you feel nothing. It can even silence the Whisper for a short while.

Effects
The effects of one dose will last for 1d4+1 hours. For this duration, you are immune to the charmed and frightened condition, resistant to psychic damage and you gain the poisoned condition.

Taking a dose twice the size, you fall unconscious in a dreamless sleep for 1d6+2 hours. During this time, you can't be woken up by normal means.

Consuming laudanum regularly will lead to a dependency. Withdrawal symptoms can be sleeplessness and vulnerability to psychic damage.