Otsuka Pharmaceutical Co., Ltd. will increase prices for 31 nutrition-supplement items starting with the Nov. 2, 2026, delivery batch [1], [5].

The move reflects the growing pressure on Japanese food and beverage manufacturers to pass rising production costs to consumers. As essential inputs become more expensive, companies are forced to adjust retail pricing to maintain viability.

The price adjustments will affect a wide range of products, including the popular Calorie Mate and Soy Joy series [1], [2]. According to company data, the price increases will range from approximately 14% to 17% [2].

Specific product changes include the Calorie Mate Block Cheese four-pack, which will see its pre-tax retail price rise to ¥250 from the previous ¥220 [3]. Similarly, the Soy Joy Almond & Chocolate variety will increase to a pre-tax retail price of ¥145, up from ¥125 [4].

Otsuka Pharmaceutical said the decision was necessary because rising raw-material, energy, and other input costs made it difficult to maintain existing prices [1], [2]. The company is implementing these changes across its domestic market in Japan [1], [5].

This price hike is part of a broader trend in the Japanese domestic market where companies struggle with the volatility of global commodity prices. By adjusting the pricing of 31 different items [1], the company aims to offset the impact of these external economic pressures.

“The price increases will range from approximately 14% to 17%.”

This price adjustment highlights the ongoing struggle of Japanese manufacturers to absorb the cost of global inflation and energy price spikes. Because Calorie Mate and Soy Joy are staples in the Japanese convenience store and nutrition market, these increases may serve as a bellwether for further pricing shifts across other processed food categories in the region.