Kids calcium supplement with strawberry flavor: The Day Tunteunki즈 Cal-Mag-D Plus K2
In short
The Day Tunteunki즈 Cal-Mag-D Plus K2 Strawberry Flavor is an individually packaged powder supplement for children in Korea. I gave it to my child for nutritional support and my spouse and I tried it too; my child liked the mild strawberry taste and soft-melting texture, so I would consider buying it again.

Good to know
- Product
- The Day Tunteunki즈 Cal-Mag-D Plus K2 Strawberry Flavor
- How we used it
- Chosen as nutritional support for my child; both parents also took it
- Where to buy
- The Day official brand store, online
- Ingredients mentioned
- Calcium, magnesium, vitamin D3, and vitamin K2
- Format and packaging
- Strawberry-flavored powder in individual easy-cut packets
Prices as written by the tester on Mar 22, 2026 · not updated automatically
My child did not seem to be growing as quickly as other children their age, so I wanted to pay more attention to nutrition. While looking for a product with calcium, magnesium, and vitamin D, I tried The Day Tunteunki즈 Cal-Mag-D Plus K2 Strawberry Flavor.

My biggest concern was whether my child would take it well. Of the various products I have given my child, they took this one especially well and liked it enough to try to have two or three more a day.


Were the individual packets easy to open and take?
When I first opened the delivery box, the red packaging caught my eye. Its design brought strawberries to mind, and my child was curious about it too.



It comes in individual packets with easy-cut notches, so I could tear them open by hand without scissors. I also liked the condition and finish of the packaging, and I could check the nutrition information on the back of the box.


What did I check when choosing the ingredients?
When choosing supplements, I tend to look at the country of origin of the ingredients first. The information saying that this product does not use Japanese or Chinese ingredients had a major influence on my choice.


Because it was a product for my child, I also checked the statement that no coloring was added. The information about ingredients and additives matched the criteria I consider important when choosing a product.

When I tried it myself, the powder particles felt fine and consistent. I also liked that it did not clump in the mouth and melted softly.

Which nutrients does it contain?
The product description presents it as a product with four functional ingredients: calcium, magnesium, vitamin D3, and vitamin K2. I also checked the information that the calcium-to-magnesium ratio is 2:1 and that the vitamin K2 is in Trans MK-7 form.


I liked having several ingredients in one packet. I thought it would be more convenient than giving separate products one by one.


Did my child like the strawberry flavor and powder format?
To my taste, it was closer to a mild, sweet strawberry flavor than an artificial syrup taste. My child would ask first, saying, “Please give me strawberry powder!” Although it is a powder, it melted softly in the mouth and was easy for my child to take.


In our home, not only my child but also my spouse and I took it. The two of us had two packets a day, which was simply how we used it at home.
Why would I buy it again?
What satisfied me most was that my child did not refuse it and instead asked for it first. I would consider buying it again because I also liked the hand-tearable individual packets and the combination of several nutrients.


Where to buy
- 더데이 공식 브랜드 스토어
- 온라인 구매






