NutraBio 100% Pure Zinc Aspartate

Our assessment

The evidence shows that NutraBio 100% Pure Zinc Aspartate is a targeted mineral supplement, but the available data on its key ingredient, calcium, requires careful attention. While calcium is essential for bone health, the specific formulation of zinc aspartate does not have sufficient clinical data to make a strong health claim. Our assessment is that you should understand the general benefits and risks of calcium supplementation before using this product, as the data provided focuses on calcium, not zinc aspartate specifically [NIH ODS].

How it works

Think of calcium as a master regulator for your bones and nervous system. It supports bone mineralization and density, and it helps your muscles relax and your nerves signal properly [NIH ODS]. However, the data does not provide a specific mechanism for zinc aspartate, so we must rely on the general function of calcium in the body. The product label indicates it is pure zinc aspartate, but the only ingredient data available is for calcium [NIH ODS].

Safety profile

Safety data is based on calcium, not zinc aspartate. The FDA has received a total of 592,059 adverse event reports across all supplement categories, but no specific reports are provided for this product [FDA data]. For calcium, high intakes may increase the risk of heart disease and prostate cancer, and can cause side effects such as constipation, nausea, weight loss, extreme tiredness, frequent urination, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. Calcium can also reduce absorption of medications like bisphosphonates, tetracycline antibiotics, and levothyroxine [NIH ODS]. Data for zinc aspartate-specific side effects is not available.

Our recommendation

We recommend caution. Since the data provided focuses on calcium, and not on zinc aspartate, you should consult a healthcare provider before starting this supplement. Check for potential interactions with any medications you take, especially antibiotics or thyroid medication, as calcium can interfere with their absorption [NIH ODS]. Without specific safety data for zinc aspartate, our recommendation is to prioritize supplements with more complete clinical evidence and to discuss your specific needs with your pharmacist or doctor.

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