Roex A&D3 with Vitamin E & Zinc

Our assessment

The evidence shows that the combination of vitamins A, D3, and E with zinc in this product offers a targeted approach for immune and bone health, but the specific benefits depend entirely on your individual nutrient levels. Our assessment: this supplement is most appropriate if you have a confirmed deficiency in one or more of these nutrients. Without a blood test, you risk taking unnecessary amounts, especially of vitamin A and zinc, which can accumulate in the body.

How it works

Think of these ingredients as a team supporting your body’s core functions. Calcium, while not listed in the product name, is a key mineral for bone mineralization and neuromuscular relaxation [NIH ODS]. Vitamin D3 helps your body absorb calcium, while vitamin A supports vision and immune function, and zinc is essential for cell growth and immune response. Vitamin E acts as an antioxidant, protecting cells from damage.

Safety profile

Data not available for this specific product’s adverse event reports. However, general FDA data shows 592,059 total adverse event reports across all supplements. For calcium specifically, high intakes might increase the risk of heart disease and prostate cancer, and can cause constipation, nausea, and abnormal heart rhythms [NIH ODS]. Calcium can also reduce the absorption of medications like bisphosphonates and levothyroxine [NIH ODS].

Our recommendation

Start by checking your current vitamin D, A, and zinc levels with a simple blood test. Only take this product if a healthcare provider confirms a deficiency. Do not exceed the labeled dose, and take it with food to improve absorption. If you take thyroid medication or antibiotics, separate your doses by at least 2 hours [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