NOW Red Mineral Algae
Brand: NOW · Form: CAPSULE [E0159]
Our assessment
The evidence shows that the primary active ingredient in NOW Red Mineral Algae is calcium, which is essential for bone health. For most adults, the recommended daily allowance is 1,000 to 1,200 mg, and this product can contribute to meeting that goal [NIH ODS]. We assess it as a generally safe option when used appropriately, but you must be aware of your total daily calcium intake from all sources.
How it works
Think of calcium as a structural building block for your skeleton. It supports bone mineralization and density, and it also plays a key role in neuromuscular relaxation and nerve signaling [NIH ODS]. This means it helps your muscles relax after contracting and ensures your nerves can send signals properly.
Safety profile
Data not available for this specific product's side effect reports. However, based on the calcium content, be aware of potential risks. Some research suggests that high calcium 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]. The FDA has received a total of 592,059 adverse event reports for all products, but specific numbers for this supplement are not available [FDA data].
Our recommendation
Start by calculating your daily calcium intake from food and other supplements before adding this product. Do not exceed the tolerable upper intake level of 2,000 to 2,500 mg daily from all sources [NIH ODS]. Take this supplement with food to improve absorption. Be aware that calcium can reduce the absorption of medications like bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. If you take any of these, separate your doses by at least two hours [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | NOW |
|---|---|
| Serving Size | |
| Contents | 180.0 Veg Capsule(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