Rudimemtary Body Potion

A potion used to or used in combination with other magic to create a rudimentary body that can be inhabited by a non-corporeal wizard. Its ingredients consisted of unicorn blood and potent snake venom.

Regeneration potion

Its ingredients included a bone from the father unknowingly given, flesh from the servant willingly given, and blood from an enemy of the one for whom it was intended. It created a new body for a Dark witch or wizard who has used Horcruxes and lost their original body, as Voldemort did. This new body was a replica of the old one and had its former powers too. It apparently required that the Dark wizard existed within a rudimentary body that could be placed within the cauldron after all the ingredients were added. If the blood of the enemy contained protections or infections, like a love sacrifice, it would also affect or protect the wizard or witch reborn with it.

Drink of Despair

An emerald green potion, its consumption caused the drinker to see "terrible things", dehydrate, and experience excruciating burning in one's insides. It subjected its victim to, it had an effect similar to the presence of a Dementor.

Death Potion

The Death Potion is a highly corrosive potion that burns its victim in seconds.

Garrotting Gas

Its fumes are the dangerous part - they have the capacity to choke and suffocate anyone who inhales them. All that a dark wizard would need to do is brew a flask and throw it upon the ground to create an environment that’d garrotte anyone who happened to walk nearby.