Question 1

When should I drink it?

Accepted Answer

There are no specific rules, but please feel free to drink it at any time you like, such as between work, after a bath, or after exercise to refresh yourself.

Question 2

Is it safe for children to drink?

Accepted Answer

Generally, there is no problem. Protein is a nutrient necessary for growth, so please make sure to consume it in a balanced diet.

Question 3

What is the expiration date?

Accepted Answer

Unopened, 18 months after manufacture.

Question 4

Is it manufactured domestically?

Accepted Answer

We manufacture our products in Japan under strict quality control at our manufacturing plants.

Question 5

Cancellation of subscription

Accepted Answer

Please submit your cancellation request via the subscription cancellation request form: " https://www.guten.jp/cancelform ".If you wish to cancel your subscription, please do so within 3 business days of the payment date.Please check the start date of your payment from " Trial/Regular Purchase " on your My Page. Please note that if you purchase on the 29th, 30th, or 31st of a month, and there is no such date in the current month, you will be billed at the end of that month.

Question 6

ECサイトで「Add to cart」ボタンが押せません。

Accepted Answer

ご利用の通信環境によっては、「Ship to Japan only（日本国内配送限定）」と表示され、購入ボタンが押せなくなる場合があります。
特に以下の場合に発生することがあります。
・海外で利用している回線を使用している

・VPNを利用している

・海外SIMや海外ローミング回線を利用している
その場合は、日本国内の回線（Wi-Fiや携帯回線）へ切り替えたうえで、再度お試しください。
それでも解決しない場合は、お問い合わせフォームよりご連絡ください。

FAQ

よくある質問

Frequently asked questions