History Main / OneDoseFitsAll

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* ''WesternAnimation/TheSimpsons'': As a bear wanders through Springfield, Chief Wiggum tries to shoot it with a tranquilizer dart. The first shot hits Barney instead, while the second shot connects. Both Barney and the bear react the same (despite the differences in time of administration, body mass, constitution and ''species''), and there is no indication that the tranq shot into Barney gave him any long-term ill effects.

* Zig-zagged in ''VideoGame/MetalGearSolid2'', due to GameplayAndStorySegregation. This game is the first in the series to feature a tranquillizer pistol (and also a tranquillizer sniper rifle, which works exactly the same way), with which enemies can be dispatched non-lethally. Tranquillizer darts will be equally effective on any regular enemy regardless of size, provided they are not wearing full body armour, making this a straight example. In boss fights, however, it's played with. Bosses can also be defeated non-lethally, but rather than knocking them out with a single dart to the head, they instead have a "stamina" bar (much like their regular health meter) which depletes the more they get hit by tranquillizer darts. However, this stamina bar is based not on the enemy's size, physical fitness or constitution, but rather simply scales up linearly as part of the game's difficulty curve. So it's averted, but in the interests of gameplay rather than realism (could be considered an AcceptableBreakFromReality, as the boss fights would be very anticlimactic if the bosses reacted to tranquillizer darts the same way the regular enemies do). This also goes for the [[VideoGame/MetalGearSolid3 third game]] in the series.

* Lampshaded in ''Webcomic/TheOrderOfTheStick'' with an inversion of the poison aspect of this trope, as Miko tells her summoned warhorse Windstriker that [[YouAreFat it's fortunate that healing potions don't need to be adjusted for body mass]] (in fairness, most people are not in the best mood after having a horse land on them).

A sub-trope of ArtisticLicenseMedicine, ArtisticLicenseBiology, and ArtisticLicensePharmacology. See also InstantSedation, SlippingAMickey, and TamperingWithFoodAndDrink. If the same drug affects people the same way despite differences in species (including, for example, humans and aliens in SpeculativeFiction works), this trope overlaps with NoBiochemicalBarriers.

* ''Series/GameOfThrones'' features a drug called "Essence of Nightshade". It's not seen being used, but Pycelle (the setting's equivalent of an apothecary) claims one drop is a powerful sleeping agent while ten is fatal, which ignores both the difference in body mass of the user.

* ''Series/GameOfThrones'' features a drug called "Essence of Nightshade". It's not seen being used, but Pycelle (the setting's equivalent of an apothecary) claims one drop is a powerful sleeping agent while ten is fatal, which ignores both the difference in body mass of the user and that "drops" are not fixed measurements.

* Lampshaded in ''Webcomic/TheOrderOfTheStick'' with an inversion of the poison aspect of this trope, as Miko tells her summoned warhorse Windstriker that it's fortunate that healing potions don't need to be adjusted for body mass, snidely implying he's been getting fat (in fairness, most people are not in the best mood after having a horse land on them).

* ''Series/BreakingBad''. In "Salud", Gus proffers Don Eladio of the Mexican cartel a bottle of poisoned tequila, which he serves to Gus and his men, and also takes a shot himself (Gus has already taken an antidote to minimize the effects, and shortly afterwards makes himself sick). Sometime later, the Don and all of his men drop dead within a few seconds of each other, despite the differences in size between them (the man standing guard outside the bathroom when Gus is making himself sick is easily twice the size of the Don himself, for example).

* TheCaper in ''Film/{{Inception}}'' depends on six people with a fairly wide range of body types reaching the dream state within a couple seconds of one another. Either they're playing this one straight, or someone is doing some very complicated math behind the scenes.

* ''WesternAnimation/TheSimpsons'': As a bear wanders through Springfield, Chief Wiggum tries to shoot it with a tranquilizer dart. The first shot hits Barney instead, while the second shot connects. Both Barney and the bear react the same (despite the differences in time of administration, body mass, constitution and ''species''), and there is no indication that the tranq shot into Barney gave him any ill effects.

* Zig-zagged in ''TabletopGame/{{Shadowrun}}'': drugs, toxins, and other chemicals affect every character equally with the same nebulous quantity of a single dose, whether it be an ordinary human, an ork built like a pro linebacker, or a two-and-a-half meter, three-hundred kilogram troll. The only concession made for different body sizes is that the subject's Body attribute reduces the duration of the effect to a minimum specified in the chemical's description; the troll ''will'' fall asleep when läes'd, even if it's the same size dose as the human got, but he'll wake up sooner and remember more.

This trope refers to those FridgeLogic-y moments in which a poison (or sedative, tranquillizer, medicine etc.) is administered to several different people and takes effect on all of them after roughly the same period of time and with the same effects, despite differences in body mass, how much of the substance was administered and constitution. In particularly glaring examples such as the one above, the poison is administered near-simultaneously to everyone concerned, all of whom drop dead within seconds of each other. It can also apply if the different individuals are of different species, such as a poison simultaneously administered to both an adult male and a dog, who nonetheless react identically to any poison administered. Supposing that in our example above Bob is a human whereas Carol is a three-headed Martian whose species evolved under entirely different circumstances to our own. How could we possibly expect Carol to react to being poisoned (sedated etc.) in the same way as Bob?

This trope is related to, but distinct from, InstantSedation. In InstantSedation, a drug is administered to a person or group of people and the drug takes effect after a very brief space of time (say, a few seconds). In this trope, it does not matter how long it takes the drug to take effect (from a few seconds to several days), as long as it takes effect on all of the victims after roughly the same period of time (despite differences in dosage, body mass and constitution). The two tropes can often overlap, however.

A sub-trope of ArtisticLicenseMedicine, ArtisticLicenseBiology and ArtisticLicensePharmacology. See also InstantSedation, SlippingAMickey and TamperingWithFoodAndDrink. If the same drug affects people the same way despite differences in species (including, for example, humans and aliens in SpeculativeFiction works), this trope overlaps with NoBiochemicalBarriers.

'''Note:''' The key element of this trope is that it shows the same substance affecting ''more than one entity'' (human, animal, alien etc.) in the same way, even if it logically shouldn't (because of differences in dosage, body mass, constitution, species etc.). If you have an example of a poison or sedative etc. affecting just ''one'' individual, it's not this trope.

* ''Film/TheAdventureOfSherlockHolmesSmarterBrother''. The pills Sacker puts in the wine during the opera scene. When the various actors drink the wine, they instantly collapse.

* Zig-zagged in ''VideoGame/MetalGearSolid2'', due to GameplayAndStorySegregation. This game is the first in the series to feature a tranquillizer pistol, with which enemies can be dispatched non-lethally. Tranquillizer darts will be equally effective on any regular enemy regardless of size, provided they are not wearing full body armour, making this a straight example. In boss fights, however, it's played with. Bosses can also be defeated non-lethally, but rather than knocking them out with a single dart to the head, they instead have a "stamina" bar (much like their regular health meter) which depletes the more they get hit by tranquillizer darts. However, this stamina bar is based not on the enemy's size, physical fitness or constitution, but rather simply scales up linearly as part of the game's difficulty curve. So it's averted, but in the interests of gameplay rather than realism (could be considered an AcceptableBreakFromReality, as the boss fights would be very anticlimactic if the bosses reacted to tranquillizer darts the same way the regular enemies do). This also goes for the [[VideoGame/MetalGearSolid3 third game]] in the series.

A sub-trope of ArtisticLicenseMedicine, ArtisticLicenseBiology and ArtisticLicensePharmacology. See also InstantSedation, SlippingAMickey and TamperingWithFoodAndDrink. If the same drug affects people the same way despite differences in species (including, for example, humans and aliens in SpeculativeFiction works), this trope overlaps with NoBiochemicalBarriers. Often overlaps with GambitRoulette, in that whenever this trope isn't a complete physical impossibility, it nevertheless relies heavily on luck and chance to pull off successfully.

This trope refers to those FridgeLogic-y moments in which a poison (or sedative, tranquillizer, medicine etc.) is administered to several different people and takes effect on all of them after roughly the same period of time and with the same effects, despite differences in body mass, how much of the substance was administered and constitution. In particularly glaring examples such as the one above, the poison is administered near-simultaneously to everyone concerned, all of whom drop dead within seconds of each other. It can also apply if the different individuals are of different species, such as a poison simultaneously administered to both an adult male and a dog (or an adult male and an alien, in ScienceFiction works), who nonetheless react identically to any poison administered.

This trope is related to, but distinct from, InstantSedation. In InstantSedation, a drug is administered to a person or group of people and the drug takes effect after a very brief space of time (say, a few seconds). In this trope, it does not matter how long it takes the drug to take effect (from a few seconds to several days), as long as it takes effect on all of the victims after roughly the same period of time (despite differences in dosage, body mass and constitution).

'''Note:''' The key element of this trope is that it shows the same substance affecting ''more than one person'' or animal in the same way, even if it logically shouldn't (because of differences in dosage, body mass, constitution, species etc.). If you have an example of a poison or sedative etc. affecting just ''one'' individual, it's not this trope.

This trope refers to those FridgeLogic-y moments in which a poison (or sedative, tranquillizer, medicine etc.) is administered to several different people and takes effect on all of them after roughly the same period of time and with the same effects, despite differences in body mass, how much of the substance was administered and constitution. In particularly glaring examples such as the one above, the poison is administered near-simultaneously to everyone concerned, all of whom drop dead within seconds of each other. It can also apply if the different individuals are of different species, such as a poison simultaneously administered to both an adult male and a dog, who nonetheless react identically to any poison administered.

A sub-trope of ArtisticLicenseMedicine, ArtisticLicenseBiology and ArtisticLicensePharmacology. See also InstantSedation, SlippingAMickey and TamperingWithFoodAndDrink. Often overlaps with GambitRoulette, in that whenever this trope isn't a complete physical impossibility, it nevertheless relies heavily on luck and chance to pull off successfully.

!!Examples

* Discussed in ''Literature/JurassicPark''. Muldoon points out that the same dose of tranquilizer will knock a gazelle unconscious but make a rhinoceros angry. So he has to make an educated guess about proper tranquilizer dose for an adult ''T. rex''.

See also InstantSedation, SlippingAMickey, TamperingWithFoodAndDrink and ArtisticLicenseMedicine. Often overlaps with GambitRoulette, in that whenever this trope isn't a complete physical impossibility, it nevertheless relies heavily on luck and chance to pull off successfully.

See also InstantSedation, SlippingAMickey and ArtisticLicenseMedicine. Often a subtrope of GambitRoulette, in that whenever this trope isn't a complete physical impossibility, it nevertheless relies heavily on luck and chance to pull off successfully.