NOW Elderberry & Zinc
Brand: NOW · Form: LOZENGE [E0174]
Our assessment
The evidence shows that this combination of elderberry and zinc is a reasonable choice for immune support, but it is not a treatment or cure for any illness. Elderberry has a long history of use for cold and flu symptoms, while zinc is essential for immune cell function. Data not available for the specific efficacy of this combined formulation.
How it works
Think of zinc as a gatekeeper for your immune system — it helps your body produce and activate white blood cells that fight off invaders. Elderberry is believed to support the immune system through antioxidant properties. Calcium is also present in the formula, and it supports bone density and neuromuscular relaxation [NIH ODS].
Safety profile
FDA received 592,059 total adverse event reports across all dietary supplements. For calcium specifically, high levels can cause poor muscle tone, poor kidney function, constipation, nausea, weight loss, extreme tiredness, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS] [FDA data]. Calcium can also reduce the absorption of medications like bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Start by taking this product as directed on the label. Be aware of your total calcium intake from all sources — including food and other supplements — to avoid exceeding safe levels. If you take any prescription medications, especially antibiotics or thyroid medication, separate your supplement intake by at least 2 hours [NIH ODS]. Consult your doctor before starting, particularly if you have kidney disease or a history of heart problems.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | NOW |
|---|---|
| Serving Size | |
| Contents | 30.0 Lozenge(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