This potion is not dissimilar in colour to Ting Tang's knockout flask, it is slightly browner in colour and gives off a horrible acrid smell that can be smelt even through the cork. This could be the reason the little kobold is so manic and has bags under his eyes.

The liquid evaporates quickly when exposed to air, creating a temporary, mildly toxic cloud that prevents living creatures from sleeping. You can throw a flask of insomnia gas as a grenade-like weapon. It has a range increment of 20 feet.

On a direct hit (splashes have no effect because the gas dissipates instantly), a living target must succeed on a Con save (DC 15) or fail to long rest for 1d6 days. Each day, the target must make another Con save (DC 22) or not get the benefits of a long rest that night. The sleep gas does not affect creatures that are immune to sleep or poison. Spells and effects that cancel or counter poisons (such as neutralize poison) are effective against the gas.

The gas affects all creatures in the 5-foot square where it strikes.

Reagents for this creation are juniper berries, Arabica coffee and spider venom. The DC to make alchemical Insomnia gas is 24. 

Notes: Poisoned