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🦠 Elevate your gut game — because your microbiome deserves the best!
Natural Factors Ultimate Probiotic 12/12 Formula delivers 12 billion CFU of a balanced blend of bifidobacteria and lactobacilli strains, designed to support digestive wellness, immune health, and stress response. Its gastric acid-resistant strains ensure maximum potency upon reaching the intestines. Vegetarian, third-party tested for purity, and offering 120 servings, this supplement is a trusted choice for proactive gut health management.

















| ASIN | B007LEO14O |
| Age Range Description | Adult |
| Allergen Information | Milk, Soy |
| Best Sellers Rank | #75,662 in Health & Household ( See Top 100 in Health & Household ) #628 in Probiotic Nutritional Supplements |
| Brand | Natural Factors |
| Brand Name | Natural Factors |
| Color | Multicolor |
| Container Type | box_box |
| Customer Reviews | 4.6 out of 5 stars 397 Reviews |
| Diet Type | Vegetarian |
| Dosage Form | Capsule |
| Flavor | Unflavored |
| Item Dimensions | 2.75 x 2.75 x 4.8 inches |
| Item Form | Capsule |
| Item Weight | 0.24 Pounds |
| Manufacturer | Natural Factors |
| Manufacturer Part Number | 1848 |
| Material Features | Vegetarian |
| Model Name | Ultimate Probiotic 12/12 Formula, Supplement to Support Digestive & Immune Health, 12 Billion CFU, 120 capsules (120 servings) |
| Model Number | 1848 |
| Number of Items | 1 |
| Primary Supplement Type | Probiotic |
| Product Benefits | Immune Support |
| Total Servings Per Container | 120 |
| UPC | 068958018485 |
| Unit Count | 120 Count |
K**S
Ultimate Probiotic
This probiotic works really well!
C**R
Gastroenterologist approved! Excellent quality!
Best on the market , my gastroenterologist approved this as great gut health!
K**L
Regular purchase
excellent value. I have bought several times
A**R
Very effective probiotic
This is the best probiotic I've ever had! When Pharmaca (pharmacy) still existed, I bought Pharmaca's branded probiotic--and it never failed to deliver. After Pharmaca went out of business, I tried numerous other probiotics--and none worked as well as Pharmaca's. I then discovered that this Natural Factors probiotic is the same formulation by the same manufacturer as Pharmaca's. I was so happy to find this Natural Factor's probiotic! This is such a great product! I intend to stay with it.
D**A
It works
Great they work on my IBS
A**A
Delivered without cooling
This product must be refrigerated. When I ordered other probiotics requiring refrigeration, those had special packaging and cooling pads; that is not how this product was delivered to me. That is why I am rating it low, otherwise this is a great product. I guess I’ll be buying at Whole Foods/Sprouts again (hoping they are handling those properly).
K**T
keeps me a regular guy
For me, this probiotic is outstanding
M**R
Probiotic that seems to work for me.
Arrived as promised and works just fine.
M**F
Bon produit
Bon produit
R**S
Tried and proven quality products.
I’ve used these probiotics for 6 months and think my gut health is getting better. Brand name is one to be trusted with quality and packaging.
P**R
Pricecy but worth it
In my opinion probably the best probiotics to take after an round of antibiotics. worked for me very well
J**M
Probiotic
C’est un must pour toutes les femmes!! (Car les femmes ont besoin de plus de 10 billiards et ont ne retrouve pas cette formule en pharmacie). Ça fait plus de 3 ans que j’achète ce produit régulièrement chez ce vendeur alors OUI je recommande!!
M**H
probiotic
arrived in timely fashion. was what I was looking for. price comparable to what I've paid in health food stores
Trustpilot
3 weeks ago
2 days ago