Fruit Juice, Vitamin C & Immune Function: What to Know
No fruit juice can simply be labeled an “immune booster.” Immune function depends on adequate nutrition, sleep, health status and many other factors.
Some fruits do provide nutrients such as vitamin C, while colorful fruits also contain many non-essential plant compounds that are studied in nutrition research.
The Short Answer
If your goal is everyday nutrition, focus on the food's actual nutrient label and your overall diet rather than a broad “immune boosting” promise.
Vitamin C & Immune Function
Vitamin C is an essential nutrient with recognized roles in normal immune function. Learn more in our Vitamin C guide.
A fruit or juice should not be described as a good or excellent source of vitamin C unless its labeled amount supports the applicable nutrient-content claim.
FruitFast Juice Concentrates
FruitFast concentrates are sold primarily for concentrated fruit flavor and flexible use. Browse Pure Fruit Juice Concentrates and review each product page for its current ingredient and Nutrition Facts information.
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Choose the fruit you enjoy and use the label—not hype—to compare nutrition.