Fiber, probiotics & enzymes
Probiotics
Live bacteria or yeasts, counted in billions (CFU). They add to the bacteria in your gut – each kind does something different, and many aren’t well studied.
465 products from US online stores, sorted by what 10 billion CFU of live cultures costs – not by the price per pack.
6.6¢Lowest cost
per 10 billion CFU live cultures
- Prices checked Nov 1, 2026, US
- No paid placements
What does 10 billion CFU mean?
- live cultures per serving in most of the products we checked
- 2–100 billion CFUlive cultures per serving in most of the products we checked
- 10 billion CFU is a fixed amount to compare by: half of the 465 products we checked have up to 15 billion CFU per serving, the other half more.
- There’s no official daily amount for live cultures.
We compare by 10 billion CFU only so products line up – it’s not a recommendation. Not medical advice.
Where products miss quality points
How the 465 products score
- Very good 90+: 1
- Good 75+: 424
- Fair 60+: 10
- Low under 60: 30
13 products contain titanium dioxide and artificial colors with an EU warning – a food authority has banned, restricted or flagged them as a possible health risk. Their score is cut in half, so it’s always in the red range. Each product says why.
- have no seal from an independent testing program
- 100%have no seal from an independent testing program10 of 30 testing points for GMP, 15 for the 24 whose label says “third-party tested”
The full 30 testing points need an independent test. Every supplement sold in the US is made under the FDA’s GMP rules – the maker checks its own products, which gives 10 points. A seal from a testing program like NSF, USP or Informed Choice means a lab outside the company checks that what’s inside matches the label. Most brands don’t take part. That doesn’t make a product bad – without a seal, a clean product still gets up to 80.
We find seals on the label and in NSF’s public lists. USP and Informed Choice don’t let us search their lists automatically, so a seal that’s only in their lists can be missing. How the score works
Pack size
Compare packs of a similar size.
All sizes in one list can affect the results – big packs usually cost less per 10 billion CFU. Pick a size above to compare packs that are alike.
407 of 465 products · cheapest per 10 billion CFU live cultures first
58 products are hidden
They have 100 billion CFU live cultures or more in one serving – at least 10 times the 10 billion CFU we compare. There’s no official upper limit, so we only mark them.
- Rank 1
Best Naturals
Probiotic
Bacteria blend · Capsules
80Good qualityMade in USA6.6¢per 10 billion CFU
Lowest
- Pack
- $23.65120 capsules
- Live cultures per serving
- 30 billion CFUin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (30 billion CFU) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 2
Nutricost
Probiotic Complex, >50 Billion CFU
Bacteria blend · Capsules · 2 flavors: >1 Billion CFU, >50 Billion CFU
80Good qualityMade in USA6.7¢per 10 billion CFU
1% more
- Pack
- $19.9560 capsules
- Live cultures per serving
- 50 billion CFUin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (50 billion CFU) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 3
Vitamatic
Lactobacillus Reuteri 50 Billion CFU with XOS Prebiotic
Bacteria blend · Capsules
75Good qualityCountry not stated6.7¢per 10 billion CFU
1% more
- Pack
- $19.9960 capsules
- Live cultures per serving
- 50 billion CFUin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (50 billion CFU) a day
vitamaticusa.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 4
Best Naturals
Probiotic 10 Strains & 30 Billion CFU's
Bacteria blend · Capsules
80Good qualityMade in USA6.7¢per 10 billion CFU
1% more
- Pack
- $23.99120 capsules
- Live cultures per serving
- 30 billion CFUin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (30 billion CFU) a day
shopbestnaturals.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 5
Best Naturals
Probiotic 10 Strains & 30 Billion CFU's
Bacteria blend · Capsules
80Good qualityMade in USA7.8¢per 10 billion CFU
18% more
- Pack
- $13.9960 capsules
- Live cultures per serving
- 30 billion CFUin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (30 billion CFU) a day
shopbestnaturals.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 6
Nutricost
Probiotic Complex Capsules
Bacteria blend · Capsules
75Good qualityCountry not stated7.9¢per 10 billion CFU
20% more
- Pack
- $18.9760 capsules
- Live cultures per serving
- 40 billion CFUin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (40 billion CFU) a day
nutricost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 7
Vitamatic
Acidophilus, 10 Billion CFU
Bacteria blend · Tablets
75Good qualityCountry not stated8.3¢per 10 billion CFU
27% more
- Pack
- $9.99120 tablets
- Live cultures per serving
- 10 billion CFUin 1 tablet
- Pack lasts
- 120 daysif you take 1 tablet (10 billion CFU) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 8
Micro Ingredients
Probiotics
Bacteria blend · Capsules
75Good qualityMade in USA8.6¢per 10 billion CFU
31% more
- Pack
- $25.74120 capsules60 servings
- Live cultures per serving
- 50 billion CFUin 2 capsules
- Pack lasts
- 120 daysif you take 1 capsule (25 billion CFU) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 9
Healthy Origins
Probiotic, 30 Billion CFUs
Bacteria blend · Capsules
80Good qualityCountry not stated9.6¢per 10 billion CFU
45% more
- Pack
- $42.99150 capsules
- Live cultures per serving
- 30 billion CFUin 1 capsule
- Pack lasts
- 150 daysif you take 1 capsule (30 billion CFU) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 10
Healthy Origins
Probiotic 30 Billion CFUs (Shelf Stable)
Bacteria blend · Capsules
75Good qualityCountry not stated9.6¢per 10 billion CFU
45% more
- Pack
- $42.99150 capsules
- Live cultures per serving
- 30 billion CFUin 1 capsule
- Pack lasts
- 150 daysif you take 1 capsule (30 billion CFU) a day
healthyorigins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 11
Vitamatic
Acidophilus Bifidus 25 Billion CFU
Bacteria blend · Capsules
75Good qualityMade in USA$0.10per 10 billion CFU
52% more
- Pack
- $14.9960 capsules
- Live cultures per serving
- 25 billion CFUin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (25 billion CFU) a day
vitamaticusa.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 12
NOW Foods
Probiotic-10
Bacteria blend · Capsules
80Good qualityMade in USA$0.10per 10 billion CFU
53% more
- Pack
- $25.05100 capsules
- Live cultures per serving
- 25 billion CFUin 1 capsule
- Pack lasts
- 100 daysif you take 1 capsule (25 billion CFU) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 13
California Gold Nutrition
LactoBif 65 Probiotics, 65 Billion CFU
Bacteria blend · Capsules
75Good qualityPacked in USA$0.10per 10 billion CFU
58% more
- Pack
- $60.7290 capsules
- Live cultures per serving
- 65 billion CFUin 1 capsule
- Pack lasts
- 90 daysif you take 1 capsule (65 billion CFU) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 14
Physician's Choice
60 Billion Advanced Probiotic
Bacteria blend · Capsules
75Good qualityCountry not stated$0.10per 10 billion CFU
59% more
- Pack
- $47.0575 capsules
- Live cultures per serving
- 60 billion CFUin 1 capsule
- Pack lasts
- 75 daysif you take 1 capsule (60 billion CFU) a day
physicianschoice.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 15
Swanson Vitamins
Ultra Potency Probiotic, 66.5 Billion CFU
Bacteria blend · Capsules
80Good qualityCountry not stated$0.10per 10 billion CFU
59% more
- Pack
- $41.7960 capsules
- Live cultures per serving
- 66.5 billion CFUin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (66.5 billion CFU) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 16
Intelligent Labs
Probiotics and Prebiotics
Bacteria blend · Capsules
75Good qualityCountry not stated$0.11per 10 billion CFU
62% more
- Pack
- $31.9960 capsules
- Live cultures per serving
- 50 billion CFUin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (50 billion CFU) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 17
California Gold Nutrition
Probiotics with Lactobacillus acidophilus, Bifidobacterium lactis, Lactobacillus plantarum, and Lactobacillus casei, 10 Strain Blend, 25 Billion CFU
Bacteria blend · Capsules
80Good qualityCountry not stated$0.11per 10 billion CFU
64% more
- Pack
- $48.48180 capsules
- Live cultures per serving
- 25 billion CFUin 1 capsule
- Pack lasts
- 180 daysif you take 1 capsule (25 billion CFU) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 18
Healthy Origins
Probiotic, 30 Billion CFU
Bacteria blend · Capsules
80Good qualityCountry not stated$0.11per 10 billion CFU
69% more
- Pack
- $19.9960 capsules
- Live cultures per serving
- 30 billion CFUin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (30 billion CFU) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 19
Healthy Origins
Probiotic 30 Billion CFUs (Shelf Stable)
Bacteria blend · Capsules
75Good qualityCountry not stated$0.11per 10 billion CFU
69% more
- Pack
- $19.9960 capsules
- Live cultures per serving
- 30 billion CFUin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (30 billion CFU) a day
healthyorigins.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 20
California Gold Nutrition
LactoBif 30 Probiotics, 30 Billion CFU
Bacteria blend · Capsules
75Good qualityMade in USA$0.11per 10 billion CFU
69% more
- Pack
- $40.03120 capsules
- Live cultures per serving
- 30 billion CFUin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (30 billion CFU) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 21
Physician's Choice
60 Billion Probiotic
Bacteria blend · Capsules
75Good qualityMade in USA$0.11per 10 billion CFU
70% more
- Pack
- $40.1460 capsules
- Live cultures per serving
- 60 billion CFUin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (60 billion CFU) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 22
BioSchwartz
Probiotic
Bacteria blend · Capsules
75Good qualityCountry not stated$0.11per 10 billion CFU
72% more
- Pack
- $21.9730 capsules
- Live cultures per serving
- 65 billion CFUin 1 capsule
- Pack lasts
- 30 daysif you take 1 capsule (65 billion CFU) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 23
InnovixLabs
Multi-Strain Probiotic
Bacteria blend · Capsules
80Good qualityMade in USA$0.12per 10 billion CFU
78% more
- Pack
- $34.9960 capsules
- Live cultures per serving
- 50 billion CFUin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (50 billion CFU) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 24
NOW Foods
Probiotic-10, 50 Billion
Bacteria blend · Capsules
80Good qualityMade in USA$0.12per 10 billion CFU
78% more
- Pack
- $29.1850 capsules
- Live cultures per serving
- 50 billion CFUin 1 capsule
- Pack lasts
- 50 daysif you take 1 capsule (50 billion CFU) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 25
Toniiq
Spore Probiotic 100
Spore-based · Capsules
80Good qualityCountry not stated$0.12per 10 billion CFU
81% more
- Pack
- $24.9760 capsules30 servings
- Live cultures per serving
- 70 billion CFUin 2 capsules
- Pack lasts
- 60 daysif you take 1 capsule (35 billion CFU) a day
toniiq.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 26
California Gold Nutrition
Probiotics with Lactobacillus acidophilus, Bifidobacterium lactis, Lactobacillus plantarum, and Lactobacillus casei, 10 Strain Blend, 25 Billion CFU
Bacteria blend · Capsules
80Good qualityCountry not stated$0.12per 10 billion CFU
81% more
- Pack
- $17.8460 capsules
- Live cultures per serving
- 25 billion CFUin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (25 billion CFU) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 27
EVLution Nutrition
Probiotic
Bacteria blend · Capsules
75Good qualityMade in USA$0.12per 10 billion CFU
84% more
- Pack
- $14.4860 capsules30 servings
- Live cultures per serving
- 40 billion CFUin 2 capsules
- Pack lasts
- 60 daysif you take 1 capsule (20 billion CFU) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 28
NATURELO
Probiotic, 50 Billion CFU
Bacteria blend · Capsules
75Good qualityCountry not stated$0.12per 10 billion CFU
87% more
- Pack
- $36.9560 capsules
- Live cultures per serving
- 50 billion CFUin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (50 billion CFU) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 29
NATURELO
Vegan Probiotic Supplement with 50 Billion CFU and 11 Researched Probiotic Strains
Bacteria blend · Capsules
75Good qualityCountry not stated$0.12per 10 billion CFU
87% more
- Pack
- $36.9560 capsules
- Live cultures per serving
- 50 billion CFUin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (50 billion CFU) a day
naturelo.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 30
Enzymedica
SubCulture Probiotic for Mood
Bacteria blend · Capsules
73Fair qualityCountry not stated$0.12per 10 billion CFU
89% more
- Pack
- $18.5930 capsules
- Live cultures per serving
- 50 billion CFUin 1 capsule
- Pack lasts
- 30 daysif you take 1 capsule (50 billion CFU) a day
enzymedica.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 31
Vitamatic
Bifidobacterium Lactis
Bacteria blend · Capsules
75Good qualityCountry not stated$0.12per 10 billion CFU
90% more
- Pack
- $14.9960 capsules
- Live cultures per serving
- 20 billion CFUin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (20 billion CFU) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 32
Vitamatic
Lactobacillus Plantarum
Bacteria blend · Capsules
75Good qualityCountry not stated$0.12per 10 billion CFU
90% more
- Pack
- $14.9960 capsules
- Live cultures per serving
- 20 billion CFUin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (20 billion CFU) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 33
HealFast
Probiotic 40 Billion CFU with Prebiotics - Everest Only
Bacteria blend · Capsules
80Good qualityCountry not stated$0.12per 10 billion CFU
90% more
- Pack
- $14.9960 capsules30 servings
- Live cultures per serving
- 40 billion CFUin 2 capsules
- Pack lasts
- 60 daysif you take 1 capsule (20 billion CFU) a day
healfastproducts.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 34
Vitamatic
Bifidobacterium Lactis 20 Billion CFU
Bacteria blend · Capsules
75Good qualityMade in USA$0.12per 10 billion CFU
90% more
- Pack
- $14.9960 capsules
- Live cultures per serving
- 20 billion CFUin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (20 billion CFU) a day
vitamaticusa.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 35
Vitamatic
Lactobacillus Plantarum 20 Billion CFU
Bacteria blend · Capsules
75Good qualityMade in USA$0.12per 10 billion CFU
90% more
- Pack
- $14.9960 capsules
- Live cultures per serving
- 20 billion CFUin 1 capsule
- Pack lasts
- 60 daysif you take 1 capsule (20 billion CFU) a day
vitamaticusa.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 36
NOW Foods
Probiotic-10 25 Billion
Bacteria blend · Capsules
80Good qualityMade in USA$0.13per 10 billion CFU
92% more
- Pack
- $15.7350 capsules
- Live cultures per serving
- 25 billion CFUin 1 capsule
- Pack lasts
- 50 daysif you take 1 capsule (25 billion CFU) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 37
Swanson Vitamins
Ultimate Probiotic Formula
Bacteria blend · Capsules
80Good qualityCountry not stated$0.13per 10 billion CFU
97% more
- Pack
- $25.7930 capsules
- Live cultures per serving
- 66.5 billion CFUin 1 capsule
- Pack lasts
- 30 daysif you take 1 capsule (66.5 billion CFU) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 38
California Gold Nutrition
LactoBif 65 Probiotics
Bacteria blend · Capsules
75Good qualityCountry not stated$0.13per 10 billion CFU
101% more
- Pack
- $25.7630 capsules
- Live cultures per serving
- 65 billion CFUin 1 capsule
- Pack lasts
- 30 daysif you take 1 capsule (65 billion CFU) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 39
Nutricost
Lactobacillus Acidophilus, 50 mg (10 Billion CFU)
Bacteria blend · Capsules
80Good qualityMade in USA$0.13per 10 billion CFU
102% more
- Pack
- $15.95120 capsules
- Live cultures per serving
- 10 billion CFUin 1 capsule
- Pack lasts
- 120 daysif you take 1 capsule (10 billion CFU) a day
vitacost.com (opens in a new tab)Checked Nov 1, 2026 · Label
- Rank 40
21st Century
Ultimate Probiotic
Bacteria blend · Capsules
75Good qualityCountry not stated$0.13per 10 billion CFU
103% more
- Pack
- $19.9930 capsules
- Live cultures per serving
- 50 billion CFUin 1 capsule
- Pack lasts
- 30 daysif you take 1 capsule (50 billion CFU) a day
21stcenturyvitamins.com (opens in a new tab)Checked Nov 1, 2026 · Label
Good to know
- Fact
- 33,503%more per 10 billion CFU for the most expensive product than for the cheapest.
- Fact
- 375%more per 10 billion CFU for the cheapest s. boulardii (yeast) than for the cheapest bacteria blend.
How we checked: one-time price for each size in the store’s US online shop, before sales tax and shipping, without subscriptions or coupons. Prices change often, so check the store before you buy. More on how we check
The amount we compare by only makes products comparable – it is not a dosage recommendation. Not medical advice.
How we calculate
Cost per dose = price ÷ (servings × amount per serving) × comparison amount. Example: $119.99 for 74 servings with 24 g of protein each is 1,776 g of protein. $119.99 ÷ 1,776 g × 30 g = $2.03 per 30 g of protein.
Found a mistake or a product we should add? Email us