What are the side effects of black garlic?

Aug 22, 2025

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What are the ingredients needed to black garlic extract?


The raw material of black garlic extract is not naturally grown garlic, but a deep-processed product obtained by fermenting ordinary white or purple garlic under high temperature (60-90 ℃) and high humidity (80-90%RH).In this process, the original starchy sulfides of wheat, such as allicin and alline, are degraded and S-allylcysteine ​​(SAC), polyphenols, melanoidins and oligofructose are formed.


When preparing the black garlic extract, roasted black garlic cloves are boiled, ethanol poured, vacuum concentrated and spray dried to obtain a powder. The higher yields undergo a second decolorization and deodorization process, resulting in a white or light brown powder without the smell of garlic.

 

black garlic extract
What are the side effects of black garlic extract?


Abdominal pain
No matter how sweet it is, it contains sulfides. Eating on an empty stomach or eating too much at once can cause bloating, acid reflux, and diarrhea. People with pre-existing stomach problems should be especially careful. High blood sugar
After roasting, dark garlic contains more sugar and whole garlic has less sugar like sunflower seeds. While the extract cuts out a little sugar, people with sensitive blood sugars can also consume a few grams at a time.

 

Allergies
Very few people have garlic protein allergies, ranging from skin rashes to sore throats. For first time users, use a smaller dose and observe for 24 hours.


Drug Interactions
Black garlic may be an inhibitor of platelets. Taking it with warfarin, aspirin, or other medications may prolong the bleeding. It can also be a side effect of diabetes and blood pressure medications, causing hypoglycemia. Those taking prescription medications should consult a doctor before making any decisions.


liver disease and "fever."
In animal studies, very high levels of allicin can increase transaminases. Although humans do not eat much of this, long-term exposure to black garlic has been associated with dry mouth, mouth ulcers, and yellow urine in some people. These symptoms, commonly known as "fever," are simply increased metabolic stress on the liver.

 

How much black garlic should be taken?

 

Whole garlic as a snack

For the average person, 1-2 cloves (10-20 g) per day is sufficient, with a maximum of 4 cloves. Avoid eating on an empty stomach; It is safe to chew after a meal.

 

Extract powder and capsules
· Black garlic extract with a SAC concentration of 1%-1.5%: 200-400 mg daily, 1-2 divided with meals. Clinical observations indicate that this scale is valid.
· The product is labeled "10:1 concentration": 0.5-1 g is enough; Any higher dose may cause stomach upset.

 

Special Teams

Diabetes: Test half dose and check blood sugar. If your postprandial blood sugar level fluctuates by more than 2 mmol/L, reduce your dose immediately.

Pregnant and breastfeeding women: Not enough safety data. It is best to avoid more than 100 mg or 1 whole grain and consult your obstetrician first.

For those with stomach ulcers, liver cirrhosis, or coagulation disorders: This product should not be consumed.

 

How to Buy Black Garlic Extract

 

SOST Biotech specializes in the production of black garlic extract (SAC activity 0.2%-3%), with a large amount of stock available.

Please feel free to contact us.

Email:info@sostherbusa.com

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