What is Asaigermanium?
Asaigermanium is a water-soluble organic germanium that was developed in 1967, a world first.
We offer it under the name " AsaigermaⓇ " as a food ingredient and cosmetic ingredient.
Asaigermanium has been confirmed to be highly safe and has a wide range of usefulness through a variety of basic and clinical trials conducted over many years. It has been used as a food ingredient since 1998, and in many products since 2002 under the name "Repagermanium" on the cosmetic ingredient label.

basic information
Asai Germanium is made by organically converting over 99.9999% polycrystalline germanium using a unique technology.
It has been confirmed to be highly crystalline and extremely stable against temperature, humidity, light, etc.


Expressive formula: [(GeCH 2 CH 2 COOH) 2 O 3 ] n
Chemical name: poly- trans -[(2- carboxyethyl)germasesquioxane]
Molecular weight: 339.40 (according to the International Atomic Weight Table of 2017)
Solubility: 1g/100mL in water
Specifications (excerpt)
| Test items | standard | Test method |
|---|---|---|
| exterior | White crystalline powder | Sensory Test |
| smell | No smell | Sensory Test |
| pH | 2.0–3.4 | pH measurement of 1% solution |
| Loss on drying | Less than 0.3% | Japanese Pharmacopoeia (105℃, 4 hours) |
*Please contact us for other specifications.
Nutritional Information (per 100g)
| energy | 155kcal |
|---|---|
| protein | Less than 0.1g |
| Lipids | 0.2g |
| carbohydrates | 38.3g |
| Salt equivalent | 0.0g |
Stability
Stability in powder state: Stability against temperature, humidity, and light has been confirmed through stress testing, long-term storage testing, and accelerated testing.
Stability in aqueous solution: Stress and accelerated tests have confirmed that the product is stable against temperature, humidity, and light.
Usage examples and display methods
| General health foods (hard capsules, tablets, etc.) |
(Ingredients label name) Organic Germanium |
|---|---|
| Soft drinks | |
| Cosmetics in general (creams, lotions, soaps, etc.) |
(All ingredients listed) Repagerumanium |
| Quasi-drugs (as other additives) |
Best before date (or quality guarantee date)
3 years from the date of manufacture
Storage conditions
Store in a cool, dry place away from direct sunlight.

