
Culturelle
Daily Probiotic
Built around one of the most studied probiotic strains.
- CFU
- CFU 10 billion
- Strain
- Strain LGG

Clean-label psyllium: husk in a veg capsule, nothing else.
Per serving, from the label. Formulas can change — always check the package.
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Deal updates for Psyllium Husk Caps 500 mg
NOW's psyllium capsules are the budget-brand answer to Metamucil: 500 mg of psyllium husk per veg capsule and no other ingredients. Three capsules give 1.5 g of psyllium with 1.1 g of dietary fiber, and the bottle is Non-GMO Project Verified.
There's no single right number; products range from 1 to 100+ billion CFU per serving and strains matter as much as counts. The label lists CFU and the named strains — compare those, and check whether the count is guaranteed 'through best-by' or only 'at time of manufacture'.
Check the label: some probiotics are shelf-stable, others say 'keep refrigerated'. Shelf-stable products are easier to travel with; refrigerated ones should stay cold from the store to your fridge.
Follow the label. Many probiotics suggest taking them with a meal; fiber supplements are taken with a full glass of water and spaced away from medicines. Consistency matters more than the hour.
Probiotics are live bacteria; prebiotics are fibers that feed the bacteria you already have. Some products combine both ('synbiotic') — the label will say so.

Culturelle
Built around one of the most studied probiotic strains.

Garden of Life
Multi-strain, shelf-stable probiotic.

Metamucil
The household name in daily fiber.

Physician's Choice
Amazon's best-selling probiotic.