
The best prebiotic supplement depends on your gut microbiome and tolerance. Here is how to evaluate the options based on evidence rather than marketing.

Prebiotics are non-digestible fibers that selectively feed beneficial gut bacteria. Here is what the evidence shows about which sources are most effective.

What to take, when to combine them, and how to know if they're working.

Evidence-based guidance on digestive enzymes, probiotics, peppermint oil, and other supplements that reduce bloating, with practical dosing and timing strategies.

Some of the most widely recommended daily supplements can quietly work against your gut in ways the label never mentions.

Learn the optimal timing and strategies for taking fiber supplements to support digestive health and overall wellness.

Covers the evidence for probiotics in preventing and treating UTIs, bacterial vaginosis, yeast infections, and maintaining vaginal microbiome balance.

Demystifies CFU counts, explaining why a higher number does not automatically mean a better product and what actually matters in a quality probiotic.

Explains the distinctions between prebiotics, probiotics, and postbiotics, what each does in the gut, and whether most people need to supplement with all three.

Reviews the evidence for gut bacteria's role in weight regulation and metabolism, and whether specific probiotic strains can meaningfully support weight management.

Explains what makes Saccharomyces boulardii unique as a yeast-based probiotic, covering its applications for travelers diarrhea, C. diff, and Candida.

Reviews the psychobiotic research — specific strains studied for anxiety and depression — and what the evidence currently supports for mood applications.

Explains which probiotic strains produce histamine versus degrade it, and how to select histamine-safe probiotics for people with histamine intolerance.

Explains what spore-forming probiotics are, how they survive stomach acid better than standard strains, and when they may be the more effective choice.

Reviews the evidence for specific probiotic strains in reducing IBS symptoms — including bloating, cramping, and irregular motility — with strain-specific guidance.

Covers how antibiotics disrupt the gut microbiome and which probiotic strains and foods are most effective for rebuilding gut flora afterward.

Examines berberine's antimicrobial properties and whether it can reduce bacterial overgrowth in the small intestine, with practical guidance for use.

Explains how berberine reshapes the gut microbiome, which bacteria it suppresses or promotes, and what that means for digestion and metabolic health.

Guides readers through the different magnesium forms used as laxatives — especially citrate and oxide — and how to dose them safely for constipation relief.