NOW 4X6 Acidophilus, 4 billion, 120 VegCaps supplement bottle
NOW

4X6 Acidophilus, 4 billion, 120 VegCaps

What We Researched
7 active ingredients analyzed · 3 inactive ingredients decoded · 5 brand certifications checked · 3 retailers compared · Last updated: Mar 2026
71
Product Score Fair
89
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Probiotic Blend 4 billion CFU
Lactobacillus Acidophilus 0
Bifidobacterium Lactis 0
Bifidobacterium Longum 0
Streptococcus Thermophilus 0
Lactobacillus Bulgaricus 0
Lactobacillus Paracasei 0
Bioavailability Very Good

Absorption Rating

  • Probiotic Blend Fair
  • Lactobacillus Acidophilus Good
  • Bifidobacterium Lactis Good
  • Bifidobacterium Longum Good
  • Streptococcus Thermophilus Good
  • Lactobacillus Bulgaricus Fair
  • Lactobacillus Paracasei Good
Other Ingredients Excellent

Fillers & Additives

  • Microcrystalline Cellulose
  • Hpromellose (cellulose capsule)
  • Stearic Acid (Vegetable Source) and Silicon Dioxide
Efficacy Very Poor

Dosage Analysis

  • Lactobacillus Acidophilus 0 Under-dosed
  • Bifidobacterium Lactis 0 Under-dosed
  • Bifidobacterium Longum 0 Under-dosed
  • Streptococcus Thermophilus 0 Under-dosed
  • Lactobacillus Bulgaricus 0 Under-dosed
  • Lactobacillus Paracasei 0 Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Probiotic Blend 4 billion CFU
Lactobacillus Acidophilus 0
Bifidobacterium Lactis 0
Bifidobacterium Longum 0
Streptococcus Thermophilus 0
Lactobacillus Bulgaricus 0
Lactobacillus Paracasei 0

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Hpromellose (cellulose capsule) Unknown
Stearic Acid (Vegetable Source) and Silicon Dioxide Generally_safe

They are used to improve the flow and processing of the supplement.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$20$19$18$17$16 Mar 12 $18.23
Vitacost

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
NOW

Founded 1968 · Bloomingdale, Illinois, USA · 53 products · nowfoods.com

Certifications

5 certifications
Informed Sport Verified Source
Npa Gmp Verified Source
Fda Gmp Inspections Verified Source
Non Gmo Project Verified Source
Usda Organic Verified Source

Transparency

3 claims
Third Party Testing Claim — Verified Source
Testing Lab Disclosure — Claimed
In House Testing — Verified Source
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Frequently Asked Questions
Is NOW 4X6 Acidophilus, 4 billion a good supplement?

NOW 4X6 Acidophilus, 4 billion, 120 VegCaps received a product quality score of 71/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 7 active ingredients Of the 3 inactive ingredients, 1 are rated safe and 0 are flagged for review. The manufacturer, NOW, holds a brand trust score of 89/100 with 5 verified certifications including Informed Sport, Npa Gmp, Fda Gmp Inspections, Non Gmo Project.

What are the ingredients in NOW 4X6 Acidophilus, 4 billion?

NOW 4X6 Acidophilus, 4 billion contains 7 active ingredients: Probiotic Blend (4 billion CFU), Lactobacillus Acidophilus (0), Bifidobacterium Lactis (0), Bifidobacterium Longum (0), Streptococcus Thermophilus (0), Lactobacillus Bulgaricus (0), and 1 more. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is NOW 4X6 Acidophilus, 4 billion safe to take?

NOW 4X6 Acidophilus, 4 billion, 120 VegCaps has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is NOW a trustworthy supplement brand?

NOW receives a brand trust score of 89/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1968 and headquartered in Bloomingdale, Illinois, USA, the company offers 53 products in their lineup. They hold 5 verified certifications including Informed Sport, Npa Gmp, Fda Gmp Inspections, Non Gmo Project. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. No regulatory violations or FDA warning letters were found in our research.

Do probiotics make you poop?

The effects of supplements on the body vary based on the specific ingredients, dosages, and individual factors. Quality clinical research is the best guide for understanding what supplements actually do versus marketing claims. Be cautious of products that promise dramatic results — legitimate supplements support health gradually, not overnight. Checking the ingredient label, understanding the dosages, and reviewing the scientific evidence are essential steps before starting any supplement. GoodSupp evaluates over 250,000 products based on published research and evidence-based criteria.

What are probiotics good for?

Probiotics Good For is a topic many supplement consumers ask about. In the context of dietary supplements, understanding probiotics good for helps you make more informed choices about what you put in your body. The quality and form of ingredients matters significantly — two products listing the same ingredient can differ dramatically in bioavailability and effectiveness. GoodSupp analyzes over 250,000 supplement products to help consumers understand exactly what's in their supplements and whether the formulation meets quality standards.

Do probiotics help with constipation?

This is an important question for supplement consumers. The dietary supplement industry is largely self-regulated, which means product quality, ingredient transparency, and safety practices vary significantly between brands and products. The most reliable way to evaluate any supplement is to check for third-party testing certifications, review the full ingredient list and dosages, and research the brand's regulatory track record. GoodSupp's database of over 250,000 analyzed products provides independent quality scores, ingredient safety ratings, and brand trust reports to help you make evidence-based decisions.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.