Designer Mycotoxin
A mycotoxin is a poison produced by a fungus, a well-known example is α-amanitin, the chemical found in the death cap mushroom (Amanita phalloides) that makes it fatal to eat.
The street gangs of Transverse City use the toxin on their weapons and ammunition.
Early symptoms include severe pain and weakness, followed by hallucinations, and then death due to neurological damage.
Misspelled once as "micotoxin."
Ghost Rider 2099 #1

Designer Neopheromones
Sprayed in the air in lower end night clubs and strip bars. They increase sexual excitement and lower the intelligence of those exposed. The results are temporary, hopefully.
Quote: "It doesn't kill you, it makes you big, fast, and crazy."
Ghost Rider 2099 #21

Dragon Root Salve
A native treatment for scars and skin damage developed by the people of that Village of the Sky in the Savage Land.
Doom 2099 #20

Dragon-Flower
A drug made from mixing [Black] Lotus and a "glandular extract from a young stegosaur."
A sacred drug to the Swamp Tribe's shamans in the Savage Land and used in their religious ceremonies.
Quote: "...specifically engineered to lower IQ by 100 points."
Doom 2099 #21

Energide
Quote: "A genetic breakthrough that increases muscle development."
A drug designed by Alchemax to increase musculature. Unfortunately, the muscle growth never stops, so users become deformed with greater and greater muscle mass, and ultimately die from the drug.
Unhappy with the news of the side effects of the drug getting out, Alchemax has sent kill teams to eliminate anyone who knows of the failure.
Punisher 2099 #7

Elixir
What the Thorites (worshippers of Thor and the other Asgardians in the world of 2099 ) call the strong sedative they take before the extremely painful procedure that turns them into pseudo-gods.
Ravage 2099 #13 (setting up 'The Fall of the Hammer' crossover.)

Femsmile
Created by the Stark-Fujikawa company, this tiny electronic chip was marketed as an antidepressant for women.
Unfortunately, the chip was never properly tested and many women developed severe side effects; 800 women suffered brain damage because of the chip.
Punisher 2099 #19

Felda 6 Vaccine
A vaccine in the world of 2099. It is unclear if "Felda 6" is the name of the disease the vaccine prevents, or the name of the vaccine itself.
The vaccine is only mentioned once, and only briefly.
2099: Manifest Destiny.

Gas-Tranq
A knockout gas used, unsuccessfully, to incapacitate Roman, the Sub-Mariner of 2099
Spider-Man 2099 #45

Geri-Toxin:
An injectable drug that removes years from a person's life. In the world of 2099, it is used in place of incarceration.
For example, someone who previously would have been sentenced to 10 years in prison instead receives a geri-toxin injection that takes 10 years off their life.
It comes in varying doses representing varying lengths of time.
Punisher 2099 #1