NOW Heart Support
Brand: NOW · Form: TABLET [E0155]
Our assessment
The evidence shows that NOW Heart Support contains calcium, a mineral primarily known for bone health. For heart health specifically, the data is mixed, and you should not rely on this supplement alone for cardiovascular support. High calcium intakes may actually increase the risk of heart disease [NIH ODS].
How it works
Calcium supports neuromuscular relaxation, which plays a role in nerve signaling and muscle function, including your heart muscle [NIH ODS]. However, its main role in the body is bone mineralization, not direct heart health improvement [NIH ODS].
Safety profile
FDA has received a total of 592,059 adverse event reports across all supplement categories. For calcium specifically, high levels in your blood and urine can cause poor muscle tone, constipation, nausea, weight loss, extreme tiredness, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. Calcium can also reduce the absorption of medications like tetracycline antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
If you are considering this product for heart health, data is not available to confirm it is effective for that purpose. You should get your calcium from food sources and speak with your doctor before adding this supplement, especially if you take any prescription medications [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | NOW |
|---|---|
| Serving Size | |
| Contents | 60.0 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