Jet

Jet is a powerful amphetamine class drug that stimulates the central nervous system. The initial euphoric rush rarely lasts more than a few minutes, but during that time, the user is filled with a rush of energy and strength. The drug was synthesized by Myron, and is extracted from Brahmin dung. Jet is taken from an inhaler.

History
When Myron first encountered the Mordinos, they were farming peyote cacti and trying to sell it to tourists as the “Reno Experience”. Unfortunately, as Myron explains, peyote trips are too long and profit is generated by fast turnaround and a high addiction rate. Furthermore, the climate was far too ravaged and irradiated to grow most vegetable matter but the hardiest of plants, so Myron began delving in growing mushrooms. Hallucinogens have low overhead and thrive in plentiful brahmin dung. From there, Myron began experimenting with derivatives of lysergic acid diethylamide, psilocybin and THC; the active substance in marijuana (unknown to still grow). However, the Mordinos still desired something a little harder and more addictive that could aid them in acquiring Redding. The solution to the problem came from the Brahmin fertilizer itself.

In the prewar days, big meat companies had experimented with a cheap protein extract for growing food. However, the product had to be abandoned because infection of even skin bacteria resulted in a complex technical relation causing it to act like a methamphetamine. To cut their losses, farmers fed the extract to their cattle. A protein extract was obtained and then corrupted and by placing the augmented Brahmin dung in large vats, they could gather the potent drug they were searching for. About a hundred slaves were killed in initial testing, mostly results of heart attacks, cerebral hemorrhages, and psychotic episodes. Myron now spends his time refining jet and making it more addictive. Thanks to Myron and the Jet, the Mordino family were able to build their drug empire.

Its creator, Myron would die less than a year after the Chosen One defeated the Enclave, stabbed to death by a Jet addict in a bar at the Den. While no one remembers that Myron created Jet or even remembers his name, his creation would live on, apparently even somehow spreading to the Capital Wasteland, where someone would produce an even more potent version, named Ultrajet, designed for use by Ghouls, who are unaffected by the effects of standard Jet.

Jet is highly addictive; more so than any other other chems. Dr. Troy therefore saw fit to create a Jet Antidote for Dr. Johnson and the People of Redding, where a high percentage rate of its inhabitants are addicted.

Fallout 2
Jet addiction in Fallout 2 is curable only by the Jet Antidote.

Fallout 3
Jet returns in Fallout 3. It is cheaper than in Fallout 2, but the effects are lessened, too. In Fallout 3, it provides +30 Action Points.

There is a more potent variant of Jet called "Ultra Jet", but it still does not seem to be as potent or addictive as the Jet encountered in Fallout 2. The newer, more powerful drug was developed as an attempt to market Jet to ghouls, who were almost unaffected to the effects of common jet.

Locations
Jet can be bought from the local chem seller (Leo Stahl [If you choose to buy chems off Leo Stahl during the Leo's Drug Habit quest], A Quick Fix)

A lot of Jet can be looted off the Trogs during The Pitt.

Inconsistencies
While it is said that Myron created Jet, Mrs. Bishop says that she got hooked on Jet by Bishop (before they got married) and for that she got kicked out of Vault City, which would require Jet to be much older than Myron is. According to Chris Avellone, what Mrs. Bishop says is a mistake and is not canon. It is more likely that Bishop got her hooked on some other drug. Consistent use of Jet will have muddled Mrs. Bishop's perceptions in any case.

In Fallout 3, Jet can be found in containers located in a sealed Vault, which appears to be an unintentional product of randomized loot tables. However, non leveled jet is placed in other locations that were seemingly untouched since the war, which is likely a mistake on the part of level designers.

In the Museum of History, a ghoul named Snowflake says he's "jetting" since he has nothing better to do than get high, but this is inconsistent with the fact that Jet doesn't affect ghouls. It could be that Snowflake is still new to being a ghoul (Around long enough to be from Rivet City) and doesn't know he's being unaffected.