Nature's Way Alive! Fruit Source Vitamin C

Our assessment

The evidence shows that while this product contains vitamin C, the available data on its active ingredient, calcium, provides the most relevant safety and efficacy information. Our assessment is that for bone health, the data supports calcium's role in bone mineralization and neuromuscular relaxation [NIH ODS]. However, you should be aware that this product's specific benefits for immune support through vitamin C are not detailed in the provided data.

How it works

Think of calcium as a structural builder for your skeleton. It supports bone density and mineral deposition, which is critical for maintaining strong bones as you age. Additionally, calcium plays a key role in neuromuscular relaxation, helping your muscles relax and your nerves signal properly [NIH ODS].

Safety profile

The FDA has received a total of 592,059 adverse event reports for this product category. For calcium specifically, safety concerns include that high intakes might increase the risk of heart disease and prostate cancer. High levels of calcium 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]. Calcium can also reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].

Our recommendation

We recommend you consult with your healthcare provider before starting this supplement, especially if you take any prescription medications that interact with calcium. The specific vitamin C content and dosing for this product are not available from the provided data, so you should rely on your doctor's guidance for your individual needs. For general bone health, ensure you are not exceeding the recommended daily intake of calcium from all sources [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