Nature's Way Fortify Optima Daily Probiotic 50 Billion
Brand: Nature's Way · Form: CAPSULE [E0159] On Market
Our assessment
The evidence shows that Nature's Way Fortify Optima Daily Probiotic 50 Billion contains calcium, which is essential for bone health and nerve function [NIH ODS]. However, the product label lists no specific probiotic strains or other active ingredients, so our assessment is limited to the calcium component. For a general audience, calcium is a well-studied mineral, but you should be aware of the risks associated with high intake [NIH ODS].
How it works
Think of calcium as a structural builder for your bones and a signal regulator for your nerves and muscles. It supports bone density and mineral deposition, helping to keep your skeleton strong. Additionally, calcium plays a role in neuromuscular relaxation by supporting muscle relaxation and nerve signaling [NIH ODS].
Safety profile
FDA received 592,059 adverse event reports for this product category. For calcium specifically, high intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. 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].
Our recommendation
Because the product label does not specify the probiotic strains or their quantities, and the only data available is on calcium, we cannot recommend this product for probiotic benefits. If you are taking this for calcium, be cautious: do not exceed the Tolerable Upper Intake Level without medical supervision, and separate your supplement from medications like thyroid hormone or antibiotics by at least two hours [NIH ODS]. Consult your doctor before starting any new supplement, especially if you have kidney disease or heart concerns [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Nature's Way |
|---|---|
| Serving Size | |
| Contents | 30.0 Delayed-Release Veg. 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