Kyolic Kyolic Nattokinase, Suntheanine
Brand: Kyolic · Form: CAPSULE [E0159] On Market
Our assessment
The evidence shows that Kyolic Nattokinase and Suntheanine are promoted for heart and cognitive health, but the data provided is insufficient to evaluate these specific ingredients. The only ingredient with available data is calcium, which is not listed in the product. Our assessment: you should not assume this product provides calcium benefits. Data not available for nattokinase or L-theanine (Suntheanine) effects.
How it works
Based on the data provided, calcium supports bone mineralization and neuromuscular relaxation, meaning it helps deposit minerals into bone and supports nerve signaling and muscle relaxation [NIH ODS]. However, since calcium is not a listed ingredient in this product, these mechanisms do not apply directly to Kyolic Nattokinase and Suntheanine. No data is available on how nattokinase or Suntheanine work in the body.
Safety profile
The FDA received a total of 592,059 adverse event reports across all supplements, but no specific report count is provided for Kyolic Nattokinase or Suntheanine [FDA data]. For calcium, side effects at high levels include constipation, nausea, weight loss, extreme tiredness, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. Since calcium is not in this product, these side effects are not directly relevant. Data not available for side effects of nattokinase or L-theanine.
Our recommendation
Our recommendation: without specific data on nattokinase or Suntheanine, you should consult a healthcare provider before using this product. If you are taking medications such as bisphosphonates, tetracycline antibiotics, or levothyroxine, note that calcium supplements can reduce their absorption — but again, calcium is not a listed ingredient here [NIH ODS]. For reliable evidence on supplements, choose products with published studies. Data not available for this product's efficacy.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Kyolic |
|---|---|
| Serving Size | |
| Contents | 160.0 Capsule(s) |
| Market Status | On Market |
How to Read This Label
Supplement labels contain several key sections regulated by the FDA:
- Serving Size — The recommended amount per dose. Always check this — some products require multiple capsules per serving.
- Amount Per Serving — Shows the quantity of each nutrient in the product, typically in IU (International Units), mg (milligrams), or mcg (micrograms).
- % Daily Value (%DV) — Indicates how much a nutrient in a serving contributes to a daily diet. 5% DV or less is low; 20% DV or more is high.
- Other Ingredients — Lists inactive ingredients like fillers, binders, and capsule materials (e.g., gelatin, cellulose, magnesium stearate).
- Suggested Use — The manufacturer's recommended directions for taking the supplement, including timing and dosage.
Source: FDA Dietary Supplement Labeling Guide