21ST CENTURY

Common questions

Is 21ST CENTURY healthy?

21ST CENTURY scores 88/100 on Scout's independent analysis of ingredients, additives, and lab results — one of the stronger scores in Scout's catalog. This supplement features high-quality ingredients such as whey protein and beneficial probiotics like Lactobacillus acidophilus, which support gut health and immune function.

How processed is 21ST CENTURY?

21ST CENTURY is NOVA Group 2: Processed Culinary Ingredients.

Which ingredients drive 21ST CENTURY's score?

In Scout's ingredient-by-ingredient analysis, Fructooligosaccharide, Lactobacillus acidophilus, Lactobacillus salivarius count in its favor. The full breakdown, with why each one matters, is in the Key ingredients section on this page.

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21ST CENTURY

88 Excellent

Analysis updated May 2026 · How Scout scores

$4.99 · 60 count · $0.08 / count
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At a glance

Beneficial ingredients 4
Harmful ingredients 0
Category Probiotics
Summary

This supplement features high-quality ingredients such as whey protein and beneficial probiotics like Lactobacillus acidophilus, which support gut health and immune function. The formulation is clean with minimal processing and lacks harmful additives, making it a strong choice for those seeking a health-focused supplement. The inclusion of prebiotic fiber further enhances its nutritional profile, contributing to its high rating.

Key ingredients 10

Fructooligosaccharide
Good

Fructooligosaccharide (FOS) is a prebiotic fiber that supports gut health by promoting the growth of beneficial bacteria. It is naturally derived from plants and is minimally processed. FOS can enhance digestive health and improve nutrient absorption.

Risks

Excessive consumption may cause gastrointestinal discomfort in some individuals.

Benefits

Supports digestive health and enhances the growth of beneficial gut bacteria.

Lactobacillus acidophilus
Good

Lactobacillus acidophilus is a probiotic that supports gut health and immune function. It is a beneficial bacterium naturally found in the human gut and is included in supplements to enhance digestive health. This probiotic can help maintain a healthy balance of gut flora.

Benefits

Promotes a healthy gut microbiome and supports immune health.

See more about Lactobacillus acidophilus →
Lactobacillus salivarius
Good

Lactobacillus salivarius is a probiotic that aids in maintaining a healthy digestive system. It is naturally occurring in the human body and is used in supplements to support gut health. This probiotic can help reduce harmful bacteria and improve overall digestive function.

Benefits

Supports digestive health and helps maintain a balanced gut microbiome.

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Bifidobacterium bifidum
Good

Bifidobacterium bifidum is a probiotic that supports digestive and immune health. It is a beneficial bacterium that naturally resides in the human gut and is included in supplements to enhance gut flora balance. This probiotic can improve digestion and boost immune function.

Benefits

Enhances gut health and supports a healthy immune system.

Whey
Neutral

Liquid whey as a minor dairy ingredient — benign.

Benefits

Rich in essential amino acids, supports muscle growth and repair, and enhances immune function.

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Gelatin
Neutral

Gelatin is a protein derived from animal collagen, often used as a gelling agent. It is minimally processed and provides some amino acids but is not a significant source of nutrition. Gelatin is commonly used in supplements for its binding properties.

Benefits

Provides some amino acids and is used for its gelling properties.

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Cellulose
Neutral

Cellulose is a plant-derived fiber used as a filler or thickener in supplements. It is minimally processed and does not provide significant nutritional benefits. Cellulose is commonly used to add bulk and improve texture in products.

Benefits

Adds bulk and improves texture in supplements.

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Citrus Pectin
Neutral

Citrus pectin is a natural fiber derived from citrus fruits, used as a gelling agent. It is minimally processed and provides some dietary fiber but is not a significant source of nutrition. Pectin is often used to improve the texture and stability of supplements.

Benefits

Provides dietary fiber and improves product texture and stability.

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Silicon Dioxide
Neutral

Silicon dioxide is a naturally occurring mineral used as an anti-caking agent in supplements. It is minimally processed and does not provide nutritional benefits. Silicon dioxide helps prevent clumping and ensures even distribution of ingredients.

Benefits

Prevents clumping and ensures even distribution of ingredients.

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Magnesium Stearate
Neutral

Magnesium stearate is a common additive used as a flow agent in supplement manufacturing. It is minimally processed and does not provide nutritional benefits. This ingredient helps ensure consistent production quality and prevents ingredients from sticking to equipment.

Benefits

Ensures consistent production quality and prevents sticking during manufacturing.

See more about Magnesium Stearate →

Processing

Group 2 · Culinary ingredients

Processed Culinary Ingredients

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