Kobayashi said on Friday it was investigating a suspected link between the products and their effects on the kidney since it received reports of kidney disease linked to the products.
As of Thursday evening, 114 people had been hospitalised and five had died after taking the supplements, which were marketed as helping lower cholesterol levels, according to the company.
Kobayashi said it is examining the earnings impact of the latest issues.
The company has been recalling products with Beni-Koji in recent days after receiving reports of kidney ailments.
A Chinese consumers association urged consumers to stop using affected products, saying it was concerned about the risk of Kobayashi products, state media reported on Friday.
Beni-Koji contains Monascus purpureus, a red mould that is also used as a red colouring in some foods.
Source: CNA
