Good 'N Natural Chitosan Natural Marine Fiber 500 mg
Brand: Good 'N Natural · Form: TABLET [E0155]
Our assessment
The evidence shows that Good 'N Natural Chitosan Natural Marine Fiber 500 mg contains a single listed ingredient: Calcium. While calcium is essential for bone health, the specific claims for chitosan as a "marine fiber" for weight management or cholesterol reduction are not supported by the data provided. Our assessment is that this product may not deliver the benefits often associated with chitosan supplements, and you should focus on the known effects and risks of the calcium content.
How it works
Calcium is a mineral that supports bone mineralization by helping deposit minerals into your bone matrix, and it also plays a role in neuromuscular relaxation by supporting nerve signaling and muscle function [NIH ODS]. However, the product is labeled as a "marine fiber" (chitosan), and no data was provided on how chitosan itself works in the body. The mechanism of action for this specific product is unclear based on the available information.
Safety profile
The FDA received a total of 592,059 adverse event reports for all dietary supplements, but specific report counts for this product are not available [FDA data]. Regarding calcium, some research suggests that high intakes might increase the risk of heart disease and prostate cancer. High levels of calcium in the blood and urine can cause poor muscle tone, poor kidney function, low phosphate levels, constipation, nausea, weight loss, extreme tiredness, frequent need to urinate, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. Calcium can also reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. Data on side effects specific to chitosan was not provided.
Our recommendation
Our recommendation is to be cautious. Because the product's intended benefit (chitosan as a marine fiber) is not supported by the data provided, and the active ingredient is calcium, you should evaluate whether you need additional calcium. Data not available on the exact calcium dosage per serving from the product label. If you are already taking calcium from food or other supplements, adding this product could lead to excessive intake, which carries the risks described above. Consult your pharmacist or doctor before use, especially if you take any of the medications listed [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Good 'N Natural |
|---|---|
| Serving Size | |
| Contents | 120.0 Tablet(s) |
| Market Status | Off 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