Nature's Sunshine Zinc Lozenge

Our assessment

The evidence shows that this product contains calcium, a mineral essential for bone health. However, the specific formulation of a "Zinc Lozenge" primarily implies zinc as the active ingredient, and the data provided only covers calcium. We cannot assess the zinc content or its specific benefits based on the available information. For the calcium component, the data supports its role in bone mineralization and nerve signaling, but you should be aware of significant safety considerations [NIH ODS].

How it works

Think of calcium as a structural building block for your skeleton. It works by supporting bone density and mineral deposition, which keeps your bones strong. Additionally, calcium plays a role in neuromuscular relaxation, helping your muscles relax and your nerves signal properly [NIH ODS].

Safety profile

Data not available for this specific product. However, based on the calcium data provided, there are important risks. High calcium intakes might increase the risk of heart disease and prostate cancer. High levels 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 across all supplements, but specific report counts for this product are not provided [FDA data].

Our recommendation

Given the lack of specific data on zinc in this product and the potential risks associated with high calcium intake, we cannot recommend this supplement without more information. If you are considering it for zinc, data is not available to support its use. If you need calcium, consult your doctor first to determine if supplementation is necessary, as getting calcium from food is generally safer. Be aware that calcium can reduce the absorption of medications like bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].

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