Strange Juices

Strange Juices (変なジュース) is the name given by the Toaru Kagaku no Railgun anime staff to refer to the bizarre drinks that are sold by vending machines, such as A Certain Vending Machine, in Academy City in the anime adaptations. A few from the original light novel are mentioned, and are later incorporated into the anime.

The labels are shown in the Project-Railgun website, the Toaru Kagaku no Railgun anime's official website. As part of Kamachi Kazuma's 10 year anniversary celebration, the Coconut Cider beverage was later made into a real drink for purchase in vending machines in, Japan since April 29th, 2014. The price of beverage is 130 Yen.

Principles
In the original light novel, after Misaka Mikoto shocks a vending machine and procures several cans of strange beverages from it, the narration then explains the reasoning behind it. Academy City is also an "Experiment City," with many universities and research laboratories send out test models of their products to the public, like the beverages. These models apparently appear on the streets, overflowing with it, making the beverages sold in the vending machines and those in convenience stores different, though the students still pay the same amount.

Other Juices

 * Fukiyose Seiri acquires a canned beverage named Condensed Milk Cider (練乳サイダー), from a vending machine in a certain hopsital. She refers to it as unhealthy.
 * Despite having a unique can design, the black coffee can that Accelerator takes en masse in the episode 19 of the first Toaru Majutsu no Index is not shown in the Project-Railgun website. The black coffee beverage, known as BLACK NO SUGAR ZERO is manufactured by YONTORY.
 * Coca-Goya (コカゴーヤ) is a beverage recommended by Saten Ruiko to Mikoto.