Do Korean Daiso Diet Supplements Really Work for About 550 Yen? An Expert Provides an In-Depth Analysis of the Ingredients

💊 An in-depth analysis of ingredients and cost-effectiveness from an expert's perspective

※This article was compiled by the YEPPURIKO editorial team based on the views of Korean nutrition experts and publicly available standards from the Ministry of Food and Drug Safety (MFDS) in Korea.
🛒 Why are Korean DAISO diet supplements trending now?

Following Olive Young, we have entered an era in which even Korean DAISO sells health foods.
Many of you may be considering buying them in bulk during your trip to Korea. This time, YEPPURIKO has organized information on DAISO diet supplements at the ingredient level based on local information.
We are now in an era where, with approximately 550 yen (5,000 won) and no prescription required, you can buy a month's supply of diet-support supplements.
However, as the barrier to purchase has fallen, more people are simply buying them “just to try.”
Green tea catechins, garcinia cambogia, and banaba leaf extract are known as ingredients that support dieting. All three are available at Korean DAISO, but they have different characteristics, and some combinations should not be taken together.
🍵 Green Tea Catechins: About 5 yen per 100 mg, but the content is too high

In terms of price alone, it is overwhelmingly competitive.
DAISO's Dr. Bear green tea catechins cost approximately 46.2 won (about 5 yen) per 100 mg.
Compared with Feelgram Real Catechin (140 won per 100 mg) and Esther Formula Dr. Esther Catechin (272.2 won), this works out to be approximately 3 times and 6 times cheaper, respectively (as of July 2025, compared using the regular price for a 30-day supply on each official website).
✅ Price comparison per 100 mg of catechins
・DAISO: Approximately 46.2 won (about 5 yen)
・Feelgram: Approximately 140 won
・Esther Formula: Approximately 272 won
Catechins are a representative antioxidant. They are said to promote the utilization of body fat and may help support basal metabolism and improve blood cholesterol levels.
DAISO's product also contains vitamin C, so antioxidant benefits can also be expected.
However, the content is concerning.
The catechin content of the DAISO product is 360 mg, exceeding the daily upper limit of 300 mg indicated by Korea's MFDS.
Taking 300 mg or more of catechins per day may cause gastrointestinal problems, and in people with concerns about liver function, there have also been cases where strain on the liver has been reported (individual differences apply).
✅ Intake precautions
Since taking them on an empty stomach may burden the gastrointestinal tract, always take them after a meal. Also, as they may interfere with sleep, it is safest to avoid taking them in the evening or before bed.
🔥 Garcinia: Outstanding in terms of cost-effectiveness

HCA found in garcinia cambogia is said to inhibit the conversion of carbohydrates into fat and to be involved in appetite control.
Put simply, it is an ingredient that helps you “avoid storing and avoid overeating.”
Garcinia shows a particularly large price difference when comparing products.
The DAISO product provides 750 mg per day for approximately 5,000 won (about 550 yen). On a 1,000 mg basis, that is approximately 222.2 won.
Using the same standard, other companies' products cost approximately 793.3 won. The difference is about 3.5 times.
✅ Suitable for people who
Feel that appetite control is a challenge, or want to prioritize cost-effectiveness as an entry point for diet support.
🩸 Banaba Leaf: If you also want to pay attention to post-meal blood sugar

Banaba leaf extract contains 1.3 mg of corosolic acid and is said to help suppress sharp increases in post-meal blood sugar and support weight management.
Its role is to help moderate the sharp rise and fall in blood sugar after meals.
✅ Price comparison per 1 mg of banaba leaf
・DAISO: Approximately 76.9 won
・Esther: Approximately 228 won
・Feelgram: Approximately 400 won
The approximately 3,000-won DAISO product costs about 76.9 won per 1 mg. Looking at the numbers alone, DAISO is the clear winner here as well.
However, this is where experts' opinions differ.
Banaba leaf products are generally formulated with chromium as well. Chromium is a mineral with a low absorption rate, so an adequate amount is important.
Korean nutrition experts point out that the chromium content of the DAISO product is insufficient. Feelgram's product is said to differentiate itself by providing a high amount of chromium. In other words, there is a reason for the higher price.
✅ Important precaution
People taking blood sugar-lowering medication (diabetes medication) must consult a doctor or pharmacist before taking banaba leaf.
❌ Should you take all three together? No, that's a no-go

This is the most common misconception.
Because they are inexpensive, you might think buying all three and taking them together will double the effect. But you should not do this.
Green tea catechins, garcinia, and banaba leaf are all classified as “functional ingredients that support body fat reduction.”
Under the Korean MFDS notification standards, taking the same functional ingredients simultaneously is not permitted. Since their functions overlap, you need to choose one.
✨ Summary
□ Choose only one ingredient that matches your goal (do not take them simultaneously)
□ Take catechins after meals, and avoid taking them in the evening or before bed
□ Check that you do not exceed the daily upper limit
□ Consult a doctor or pharmacist if you have an underlying condition or take medication
□ Check not only the price but also the content of supporting ingredients such as chromium
Korean DAISO diet supplements are priced so boldly that, looking at the price alone, you may wonder, “What was I buying elsewhere all this time?” However, low cost is a starting point, not the goal. Choose ingredients that suit you, follow the upper limits and recommended timing, and check for interactions with other medications. These are the conditions for achieving true cost-effectiveness.
❓ Frequently Asked Questions
Q. Is it okay to take DAISO green tea catechins on an empty stomach?
A. Taking them on an empty stomach may cause gastrointestinal problems, so taking them after meals is recommended. Since they may also interfere with sleep, it is safest to avoid taking them in the evening or before bed. DAISO's product contains 360 mg of catechins, exceeding the daily upper limit of 300 mg, so particular caution is required.
Q. Can I take catechins, garcinia, and banaba leaf together?
A. No, you should not take them together. All three are classified as “functional ingredients that support body fat reduction,” and simultaneous intake is not permitted. Choose and take one that matches your goal.
Q. I take diabetes medication. Can I take banaba leaf?
A. People taking blood sugar-lowering medication must consult a doctor or pharmacist before taking banaba leaf. There may be interactions related to blood sugar.
Q. Why is the Feelgram product more expensive even though DAISO's banaba leaf is the cheapest?
A. Chromium, which is added to banaba leaf products, has a low absorption rate, so an adequate amount is necessary. Korean nutrition experts point out that the chromium content of the DAISO product is insufficient. Feelgram's product differentiates itself by increasing its chromium content, which creates the price difference.
Q. How cost-effective is DAISO's garcinia?
A. DAISO's garcinia provides 750 mg per day for approximately 5,000 won (about 550 yen). That comes to approximately 222.2 won per 1,000 mg, making it about 3.5 times cheaper than the comparison product at approximately 793.3 won. It has the most notable price competitiveness among the three ingredients.
🛍 Shop in Korea More Smartly
YEPPURIKO delivers the latest information on Korean drugstores, Olive Young, and duty-free shops every week.
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