Oronamin C

Oronomin C or simply Oronamin is a vitamin infused carbonated beverage manufactured by Otsuka Chemical Holdings Co., Ltd. This popular drink is advertised as a health beverage as it is infused with amino acids, vitamins such as B12 and B2 and its main ingredient, Vitamin C. Starting in 2004, during commercial breaks on the Sunday Morning time slot, ads of the drink featuring the stars of the Kamen Rider shows would be broadcast as a cross-promotional tie-in.