Compare
Compare PB8 probiotics
All six PB8 formulas on one page: first three questions, then every line of every label, then the price per day.
Find your PB8
Three questions, and the PB8 label that fits them
Answer for yourself. The match below comes straight from what each of our labels prints, and you can open the full label of any formula before you buy.
Not sure a probiotic is right for you at all? Your doctor or pharmacist knows your health and your medicines, so take the label to them.
PB8 formulas that fit your answers
14 billion CFU · Classic · 2 capsules a day
14 billion CFU · Classic · plant capsule
15 billion CFU · Classic · 1 capsule a day
65 billion CFU · 3-in-1 · delayed release
50 billion CFU · 3-in-1 · for women
6 billion CFU · 3-in-1 · for women
Women's and Vaginal formulas are for women 18 and over. For a man or for anyone, try "Digestive health" or "The immune system and digestion".
PB8 formulas, line by line
| Formula |  Original14B |  Vegetarian14B |  Immune15B |  Synbiotic 3-165B |  Women's50B |  Vaginal6B |
|---|---|---|---|---|---|---|
| CFU per serving at manufacture | 14 billion | 14 billion | 15 billion | 65 billion | 50 billion | 6 billion |
| Strains on the label | 8 | 8 | 31 (sold as 10+) | 31 | 27 | 21 |
| Serving | 2 capsules | 2 capsules | 1 capsule | 1 Delayed Release capsule | 1 Delayed Release capsule | 2 Delayed Release capsules |
| Servings per bottle | 60 | 60 | 60 | 30 | 30 | 30 |
| Capsule | Capsule | Vegetarian capsule | Capsule (hypromellose) | Delayed release capsule | Delayed release capsule | Delayed release capsule |
| Prebiotic | Inulin | Inulin | Acacia, oat hull fiber | Fiber blend, 100 mg | Fiber blend, 285 mg | Fiber blend, 600 mg |
| Postbiotics | Not listed | Not listed | Not listed | Yes | Yes | Yes |
| After opening | Best refrigerated | Best refrigerated | No line printed | Refrigerate | Refrigerate | Refrigerate |
| For | Adults | Adults | Adults | Adults | Women 18+ | Women 18+ |
| Lowest price per day | $0.28 a day | $0.32 a day | $0.42 a day | $1.33 a day | $1.33 a day | $0.83 a day |
| Buy | | | | | | |
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
PB8 at the lowest price per day
For each formula, the bottle size with the lowest price per day at the label serving.
| Formula | CFU | Capsules a day | Size | Per day |
|---|---|---|---|---|
| PB8 Original Probiotic | 14 billion | 2 | 3 bottles × 120 capsules | $0.28 a day |
| PB8 Vegetarian Probiotic | 14 billion | 2 | 2 bottles × 120 capsules | $0.32 a day |
| PB8 Immune Support Probiotic | 15 billion | 1 | 60 capsules | $0.42 a day |
| PB8 Synbiotic 3-1 Probiotic | 65 billion | 1 | 30 capsules | $1.33 a day |
| PB8 Women's Probiotic | 50 billion | 1 | 30 capsules | $1.33 a day |
| PB8 Vaginal Probiotic | 6 billion | 2 | 60 capsules | $0.83 a day |