Kids calcium-magnesium powder: The Day Tunteun Kids

In short

The Day Tunteun Kids Cal-Mag Plus K2 Strawberry Flavor is a children’s powdered supplement prepared for a growing niece or nephew in Korea. With four nutrients in one easy-cut sachet and a sweet strawberry taste, The Day Tunteun Kids was a worthwhile choice. Verdict: a convenient once-daily option for children who prefer sweet powder.

Tunteun Kids Cal-Mag with calcium and vitamins

Good to know

Product
The Day Tunteun Kids Cal-Mag Plus K2 Strawberry Flavor
Use context
A supplement prepared for a growing niece or nephew during Lunar New Year
Key nutrients
Calcium 220 mg, magnesium 110 mg, vitamin D 10 μg (400 IU), and vitamin K2 70 μg, as stated in the original post
How to take it
One sachet daily, eaten as is or with water
Taste and packaging
Strawberry-flavored powder in easy-cut individual sachets

Prices as written by the tester on Feb 13, 2026 · not updated automatically

What did I choose for my growing niece or nephew?

I prepared supplements to look after my family’s health during Lunar New Year. For my growing niece or nephew, I chose The Day Tunteun Kids Cal-Mag Plus K2 Strawberry Flavor. I liked that it combines calcium, magnesium, vitamin D, and vitamin K2.

The Day Cal-Mag product prepared for a growing niece or nephew

Since my niece or nephew is still growing, I became interested in keeping everyday nutrition balanced. When choosing a product, I looked beyond the calcium content and checked the nutrients included alongside it.

The Day Tunteun Kids chosen for children’s nutritional care

Did children like the strawberry flavor?

Even if the nutrient combination looks good, it is hard to keep up with if a child will not eat it, right? This one has a sweet strawberry flavor with almost no resistance, and I hear children reach for it first like a snack. Hearing that there was no need to force it made me glad I chose it.

The Day Tunteun Kids Cal-Mag product with strawberry flavor
Strawberry-flavored calcium-magnesium supplement chosen for children

What nutrients are in each sachet?

According to the product description, each sachet contains calcium, magnesium, vitamin D3, and vitamin K2. The amounts listed in the original post are calcium 220 mg, magnesium 110 mg, vitamin D 10 μg (400 IU), and vitamin K2 70 μg. I liked being able to take care of several nutrients in one sachet.

The Day Cal-Mag product introducing its nutrient combination

The calcium-to-magnesium ratio is 2:1. The product explains that this formulation takes calcium absorption into account. Rather than looking at the amounts alone, I was interested in which nutrients were blended together.

The Day supplement containing calcium and magnesium
The Day Tunteun Kids Cal-Mag formulation

What did I check in the ingredient and additive information?

The ingredient information says that it uses microencapsulation technology, which makes the calcium into fine particles and then coats it once more with lecithin. I found the explanation of how the ingredients were processed impressive.

The Day Cal-Mag product with ingredient information

I also looked at the explanation that vitamin D3 and vitamin K2 in the trans MK-7 form are blended together. It let me check the ingredients included alongside calcium.

Tunteun Kids Cal-Mag with calcium and vitamins

It also caught my eye that the origins of both the main and secondary ingredients are disclosed, and that it states no Japanese or Chinese ingredients are used. There was also a claim that it is free of five types of additives. Since it was for a child, I checked the information on ingredients and additives together.

The Day Tunteun Kids product with origin information
The Day Cal-Mag with additive information

Is the packaging easy to open, and is it simple to take?

The easy-cut type was convenient because even children with weak grip strength can open it easily.

Easy-cut packaging for The Day Cal-Mag
Individual packaging containing strawberry-flavored The Day Cal-Mag powder

It is a powder that melts softly in the mouth, with a sweet strawberry flavor and a clean finish without the chalky taste typical of supplements. The product description says it contains a mixed powder of seven berry concentrates. Taking one sachet a day as is or with water makes it easy to keep up with.

Where to buy

더데이 · The Day Tunteun Kids Cal-Mag Plus K2 Strawberry Flavor더데이 튼튼키즈 칼마디 플러스 K2 딸기맛Prices as written by the tester on Feb 13, 2026 · not updated automatically
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