PROMO
Esther Formula Bestseller Duo

Glutathione 5X
30.77% (L-Glutathione 75%, Netherlands), Fulluran, Vitamin C, Lemon Juice Powder [Dextrin, Lemon Juice ((Lemon 100% ; USA), Gum Arabic, Citric Acid, Mixed Preparation (Alcohol, Purified Water, Natural Flavour)], Hydroxypropylmethylcellulose, Enzyme-Treated Stevia, Milk Thistle Extract :Powder (USA), Beta-Cyclodextrin, Glycerin, Natural Flavor (Natural Lemon Flavour), Other Edible Oils and Fats, Vitamin E, Gardenia Yellow

Brewer's Yeast Plus
Brewer's yeast (Domestic), Fructooligosaccharide, Dextrin, Copernicia Cerifera (Carnauba) Wax, Magnesium Oxide, Roasted Glycine Max (Soybean) Seed Extract Powder (Domestic), Laminaria Japonica Extract Powder (Domestic), Oryza Sativa (Rice) Extract, Ecklonia Cava Extract Powder, Zinc Oxide, Dried Yeast, Calcium Pantothenate, Biotin [Contains Soy]

Glutathione 5X:
Brewer's Yeast Plus: 1 box consists of 14 sachets for oral consumption (1 sachet = 3g).

Glutathione 5X: 2 July 2026
Brewer's Yeast Plus: 7 May 2025

Glutathione 5X
Precautions for Storage: Store in a cool and dry place, avoiding high temperatures, high humidity and direct sunlight.

1. Do not recycle for other purposes. Keep out of the reach of children.
2. Please consume it as soon as you open it.
3. If you have a medical condition or take any medication, consult a doctor prior to usage.
4. If you have any allergies, an overreaction may occur depending on each individual’s condition, so please check the raw materials before consuming it.
5. Consult your physician or healthcare professional before taking the product. If abnormalities occur, discontinue use and consult a doctor.
6. Please be careful when opening the product as you may get injured by the packaging materials.
7. This product is manufactured in facilities that use eggs (poultry), buckwheat, peanuts, soybean, wheat, mackerel, crab, shrimp, pork, peach, tomato, sulphuric acid, walnuts, chicken, beef, squid, shellfish (including oysters, abalone, mussels), and fish.

Brewer's Yeast Plus
Please take note of these pointers of this product as they will not be accounted for exchange or refund.
• The scent of the tablets is the same as that of the original ingredients.
• The surface of some tablets may not be smooth.
• Powder may be formed.
• Occasionally, broken tablets may be found.
• The colour of the tablets may not be consistent (Spots are the colour of raw ingredients)

1. Do not recycle for other purposes. Keep out of the reach of children.
2. Please consume it as soon as you open it.
3. If you have a medical condition or take any medication, consult a doctor prior to usage.
4. If you have any allergies, an overreaction may occur depending on each individual’s condition, so please check the raw materials before consuming it. .
5. Consult your physician or healthcare professional before taking the product. If abnormalities occur, discontinue use and consult a doctor.
6. Take caution when opening the product as you may get injured by the packaging materials.
7. This product is manufactured in facilities that use eggs (poultry), buckwheat, peanuts, soybean, wheat, mackerel, crab, shrimp, pork, peach, tomato, sulphuric acid, walnuts, chicken, beef, squid, shellfish (including oysters, abalone, mussels), and fish.
8. Store in a cool, dry place and avoid direct sunlight.

Glutathione 5X
1. How should I take it?
Attach it to the roof of your mouth whenever and wherever you want.

2. How many times should I take it?
Attach 1 film a day to the roof of your mouth.
It’s okay to take 2 films twice a day in a row or at intervals.

3. Can 5x and 3x be taken concurrently?
Yes, you can!

4. Can vegetarians or vegans consume Glutathione 5X?
There is a small amount of milk in the product. As there are varied types of vegetarian diets, we recommend individuals to check the ingredient list before purchase or consumption.

5. Can I take more than the recommended amount?
Yes, you can. Esther Formula Glutathione Direct Film is categorised as food (other processed product) and the daily intake is not set. If you want intensive management, you can take as much as you need.

According to the clinical results, there are many results of taking 500-1000mg/day of glutathione is recommended for oral intake. However, Glutathione Direct product is a film formulation that can be absorbed through the mucous membrane, and the vascular mobility of glutathione is 8 times higher than that of oral intake.

Therefore, taking 1 sheet a day is sufficient, but if you want to increase intake for maximum effect, we recommend taking up to 3-4 sheets a day. In addition, even if you consume more than 4 sheets, excessive intake does not cause any side effects in the body.

6. Is it okay to take it for a long time?
Yes, it’s okay. Esther Formula Glutathione Direct is categorised as food (other processed product) and unless you have a specific constitution or are sensitive to external immune reactions, long-term intake does not cause any specific problems in the human body.

7. Is it safe for pregnant or lactating women?
Pregnant and lactating women can also take it. However, since it is a sensitive period, please consult with your doctor before taking it.

8. How long do I have to take this product for results to show?
The intake period during which you can feel the effect varies from person to person, but it is usually 1-3 months later.

9. Is it suitable for all age groups?
Yes it is. However, we do not recommend 1-2 years old children who doesn't have full control over their bodies to consume as it might get stuck in the throat.

10. How should we bring this product when travelling overseas?
It is a product that can be stored at room temperature and is packaged individually, making it easy to carry around when traveling.

11. Should this product be taken before or after food?
It can be taken before or after a meal, so please take it at a time when you can consume it consistently.

12. Is there any animal derived ingredients since it is not vegan?
The product does not contain animal ingredients. However, it is manufactured in the same facility as products using pine nuts, eggs (poultry), buckwheat, peanuts, soybeans, wheat, mackerel, crab, shrimp, pork, peaches, tomatoes, sulfite, walnuts, chicken, beef, squid, shellfish (including oysters, abalone, mussels). They should check if this is okay for them before consuming.

13. Can we take up to 4 daily? Or taking up to 4 should only be occasionally? (Since one of the images show can take up to 4)
• Glutathione is a component that exists in the human body and the amount of daily intake is not specified. Depending on the situation of the consumer, it is possible to consume 4 or more sheets per day.
• However, it contains 50mg of glutathione per sheet and clinical results show that more than 80% of it is transferred to blood vessels when absorbed through mucous membranes (roof of mouth), so taking 1 sheet per day is actually enough.
• Therefore, take 1 sheet daily according to the recommended range, but you can increase the intake on some days when you want to take a little more depending on the condition of that days.

14. Should we also advise to avoid drinking alcoholic beverages while taking this product?
It can be taken before drinking, and if you have been drinking, it is recommended to take it an hour later. However, it is safe to consume immediately after drinking as it does not cause side effects in the body.

15. Can customers drink hot or acidic beverages before or after taking this product?
• Hot or acidic beverages may be consumed prior to taking Glutathione Direct.
• In addition, if the mucous membrane in the mouth is dry before taking Glutathione Direct, it will not adhere well, so if you take it after drinking, the mucous membrane will remain moist and adhere easily.

16. If we want to take 2 films, can we take both at the same time or should take 1 after another?
You can either attach the two films at the same time or take them one by one, so please take it in a way that is convenient for you.

17. This is not halal-certified but can it be consumed by Muslims?
The product is manufactured in the same facility as products using pine nuts, eggs (poultry), buckwheat, peanuts, soybeans, wheat, mackerel, crab, shrimp, pork, peaches, tomatoes, sulfite, walnuts, chicken, beef, squid, shellfish (including oysters, abalone, mussels).

Please kindly check if this is okay before consuming.

18. If we are taking collagen, probiotics, Gongmi, Omega, when should we consume this? Any interactions with Glutathione?
• There are no ingredients that are limited to intake with the same time as glutathione.
• Therefore, it is also possible to consume them all at the same time. However, since our Glutathione Direct product is a product that is attached to the roof of the mouth for absorption through the mucous membrane of the mouth, please take it by attaching it to the mucous membrane of the mouth by itself after taking all other supplements.
• Glutathione is a powerful antioxidant component in the body, and is more effective when simultaneously consumed with vitamins C, E, A, beta-carotene, selenium, copper, and zinc, which are involved in antioxidant metabolism. Therefore, Glutathione Direct product contains vitamin C, vitamin E and milk milk thistle (silymarin) as Dr. Esther's own formula.

19. Webmd.com mention that taking Glutathione long-term has been linked to lower zinc levels. Is there a need to take a break or can consume continuously?
Even if you take zinc preparations, you can take glutathione every day without a break.

Zinc and glutathione are representative antioxidants and act complementary to each other during antioxidant metabolism in the body. In other words, zinc used in antioxidant metabolism is oxidised, but glutathione converts it back to reduced zinc to be used again in antioxidant metabolism.

So even if you take zinc, you can continue to take glutathione daily.

20. How long does it take for the film to dissolve in the mouth? Can one eat/drink when the film is not fully dissolved?
Since the amount of salivary secretion varies from person to person, the dissolution time may vary from person to person. We inform you that the approximate time is 5-10 minutes, and if Yeo Esther Glutathione Direct Film is attached to the mucous membrane, most of the glutathione will be moved to the mucous membrane by simple diffusion.

To provide detail information, the absorption of glutathione occurs by simple diffusion due to concentration differences. In other words, if the film is attached to the mucous membrane, glutathione moves to the mucous membrane due to simple diffusion into the mucous membrane with a low concentration, since glutathione is herpes at a high concentration outside the mucous membrane where the film is dissolved by saliva.

Therefore, if the glutathione film adheres well only to the mucous membrane, saliva comes out or the tongue touches it. If you have other food in your mouth, the film is easy to fall off the mucous membrane, so it is recommended to consume it by product itself.

21. How does working on the skin pigment production help to reduce wrinkles and improve skin elasticity?
Glutathione functions as a powerful antioxidant within our body. Anti-oxidation means to prevent cellular oxidation caused by free radicals in the body, and is closely related to anti-aging.

Accordingly, in a paper published in cosmetic and investigational dermatology in 2017, a clinical study was conducted to evaluate the effects of oral intake of reduced and oxidised glutathione on skin aging indicators, and the results were reported as follows. "A significant reduction in wrinkles was observed in the glutathione intake group compared to the placebo intake group, and a tendency to increase skin elasticity was observed in both the reduced and oxidised glutathione intake groups."

In addition, while reporting the results of a clinical study to evaluate the effect of oral intake of glutathione on skin aging indicators, the study's conclusions are presented as follows. "To summarise paper, we show that oral intake of reduced and oxidised glutathione has various benefits for skin properties and can perform an anti-aging function, at least in middle-aged women."

22. Can this help to reduce hyperpigmentation concerns such as melasma?
Glutathione Direct product is not a medicine, so it is not an immediate means of treating melasma. Everyone knows that the factor that determines the colour of our skin is melanin pigment. Reports that glutathione affects the melanin pigment index have been continuously accumulated in the academic world. That said, oral antioxidants like glutathione can reduce melanogenesis by inhibiting free radicals.

Based on these preceding studies, the results of a randomized, double-blind clinical study were published in The Journal of dermatological treatment in 2012 to examine the effect of oral glutathione intake on the improvement of melanin index in healthy adults. "All 60 subjects completed the study, and the melanin index of the glutathione intake group continuously decreased in all six body parts observed for 4 weeks of intake."

To be more detail, the production of melanin, which is the cause of melasma, begins when L-tyrosine is converted into dopaquinone by the enzyme tyrosinase. Glutathione inhibits tyrosinase in three ways. Direct inhibition through copper chelation, indirect inhibition through antioxidant effects, and inhibition of migration to the premelanosome. Thus, glutathione changes the way melanin is produced from eumelanin to pheomelanin through the reaction between dopaquinone and thiol groups through the formation of sulfhydryl group-dopa conjugates.

23. Can those taking tranexamic acid tablets for skin whitening take this?
Yes, Tranexamic acid and glutathione have different melanin inhibition mechanisms, so intake is not restricted. Glutathione is a food as well as an antioxidant component present in the body.

In Korea, there is a guide to consume after consulting with a dermatologist, so please refer to it.

24. Does it help with tanned skin?
When tanning the skin to achieve a deep tan as a means to enhance one's beauty, either by exposing the skin to UV radiation outdoors or artificially using UV machines, it's important to note that while you may attain the desired skin tone, you may also accelerate skin aging simultaneously. Glutathione, a powerful antioxidant, helps protect skin cells from oxidative stress, which is a leading cause of internal aging. Therefore, if you engage in tanning, it is advisable to consider taking glutathione supplements as an essential part of concurrent skincare for your skin's health.

25. Does the type of food we consume daily affect the efficiency of Glutathione?
Since glutathione is an antioxidant component, it is recommended to consume vegetables and fruits that contain a lot of phytochemicals.

On the other hand, there are no specific food that affect the absorption rate of glutathione.

For more reference: Please refer to https://www.esthermall.co.kr/board/?db=gallery_26&no=1002286&mari_mode=view@view

Brewer's Yeast Plus
1. How does it taste and smell like?
It is fragrance-free and odourless, but contains brewer's yeast and 4 domestic black foods which customer may feel a slight fragrance unique to the raw material.

2. How long do I need to take this product to see effects?
As the experience may vary among individuals, results may vary from 2 weeks up to 3 months. For health supplements, it is recommended to be taken for over 3 months to see visible effects.

3. How many sachet should I take a day?
Take 1 sachet, once a day. With one sachet, you can
consume 1,200mg of brewer's yeast that is 100%
domestic and has high purity. In addition, you can also consume 4 types of minerals and 4 types of black foods that have been blended in a ratio devised by Dr. Esther Yeo.

4. Can pregnant, breastfeeding and lactating ladies consume this product?
The ingredient called brewer's yeast itself is not formulated with raw material restricting the intake by pregnant women and lactating women, but pregnant women and lactating women are often in a very sensitive physical condition, so we would recommend them to take basic nutrients such as vitamins, probiotics, omega3, calcium, and iron first.

We do not particularly recommend the consumption of brewer's yeast.

5. Is it suitable for all age groups?
There is no set age for intake, it can be consumed by all ages, from children to adults.

6. When should I take it?
Take it at any time convenient for you. This product is individually packaged for one dosage and is easy and convenient to carry, so it can be taken anytime, anywhere.

7. Can I take it together with other supplements? For e.g. Omega, Glutathione, Probiotics.
Brewer's yeast is different from other products in most ingredients and functions, so it can be consumed together.

However, we recommend that you take it at a different time than the probiotics, iron, and colostrum ingredients that are usually consumed on an empty stomach.

8. Can I take more than the recommended amount?
Yes, you may. This product is classified as food (sugar processed product) so there is no set daily intake. On days when you feel like you need extra management, you can take as much as you want.

9. Is it okay to take it for a long time?
Yes. Since this product is classified as food (sugar processed product), it does not cause any specific problems to the human body even if consumed for a long time.

10. Is it okay to consume 1,000% of the recommended intake of Biotin?
Biotin, a water-soluble vitamin, is absorbed as needed and then excreted out of the body. In addition, sufficient intake of Biotin is recommended because it gets easily destroyed by heat or due to changes in acidity.

11. If you have Crohn's disease, diabetes, or depression and are taking related medicines, or pregnant or lactating women, we recommend taking it after consulting with a specialist.

12. Is this recommended for Muslim’s consumption since it’s obtained after filtering beer?
It depends on how much restriction this Muslim have on food. To explain further about Brewer's yeast, Brewer's yeast is a dried yeast of the genus Saccharomyces that is separated after filtering beer during the beer manufacturing process. (Contains about 40% protein, high in vitamin B and phosphorus).

The product is also manufactured in the same facility as products using pine nuts, eggs (poultry), buckwheat, peanuts, soybeans, wheat, mackerel, crab, shrimp, pork, peaches, tomatoes, sulfite, walnuts, chicken, beef, squid, shellfish (including oysters, abalone, mussels). They should check if this is okay for them before consuming.

13. Is there any beverage or food to avoid when taking this?
Brewer's Yeast Plus is a general food (processed sugar product), and there are no ingredients that restrict intake together with, so you can take it whenever and wherever you need nutrition.

However, we recommend avoiding it as much as possible before or after consuming alcoholic beverages. Also if you are allergic to a specific raw material, please check the raw material name before taking it.