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Head-to-head evidence comparison — which supplement is right for you?
B. lactis (BB-12 / HN019) vs Ginger Extract: Ginger Extract has the stronger overall evidence (7 vs 6/10); they're alternatives for improve digestion — the best pick depends on your goals. Take the 60-second quiz for a pick tailored to your goals.
Ginger Extract wins 2 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Mostly mechanism / observational
Top outcomes
Verdict
Likely helps
7 of 8 studies with measurable effects showed benefit.
Top outcomes
1-10 billion CFU daily for BB-12 (1 billion is enough); 10-20 billion CFU daily for HN019 if transit is the goal
any
Capsule or sachet standardized to a named strain (BB-12 or HN019)
250-1000mg extract daily
Before meals for digestion, 30 min before travel for motion sickness, As needed for nausea
Standardized extract (5% gingerols)
2 weeks
4 weeks
n/a
n/a
30-60 minutes
30-60 minutes
2-4 weeks
Dose-response effect of Bifidobacterium lactis HN019 on whole gut transit time and functional gastrointestinal symptoms in adults.
Scand J Gastroenterol (2011) · Rct · n=100
Whole-gut transit fell 49 to 21 hours on high dose (p<0.001) and 60 to 41 hours on low dose (p=0.01); placebo unchanged
Eight-Week Supplementation With Bifidobacterium lactis HN019 and Functional Constipation: A Randomized Clinical Trial.
JAMA Netw Open (2024) · Rct · n=229
Primary outcome (change in complete spontaneous bowel movements per week): +0.80 with HN019 vs +0.66 placebo — no difference
Effects of 28-day Bifidobacterium animalis subsp. lactis HN019 supplementation on colonic transit time and gastrointestinal symptoms in adults with functional constipation: A double-blind, randomized, placebo-controlled, and dose-ranging trial.
Gut Microbes (2018) · Rct · n=228
No significant differences vs placebo in the primary outcome (colonic transit time) or any secondary outcome
Dietary supplements for dysmenorrhoea
The Cochrane database of systematic reviews (2016) · Meta analysis · n=3101
Supplements versus other supplementsThere was no evidence of a difference in effectiveness between ginger and zinc sulphate (MD 0.02 points, 95% CI -0.58 to 0.62; one RCT, 101 women).
Effectiveness of Herbal Medicines with Anti-Inflammatory, Antimicrobial, and Antioxidant Properties in Improving Oral Health and Treating Gingivitis and Periodontitis: A Systematic Review
Nutrients (2025) · Systematic review
Natural products, including single extracts and polyherbal formulations, provide effective and safe alternatives for managing gingivitis and PD.
Efficacy and safety of dietary polyphenols in rheumatoid arthritis: A systematic review and meta-analysis of 47 randomized controlled trials
Frontiers in immunology (2023) · Meta analysis · n=3852
Dietary polyphenols may improve DAS28, reduce C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR), and improve oxidative stress, etc.
Strong evidence from multiple meta-analyses including pregnancy, chemotherapy, and post-operative nausea. Conservative effectiveness estimates due to variable study populations and outcome measures.
AI-estimated from published studies. Interpret as directional guidance.
Ginger Extract has a higher evidence score (7/10 vs 6/10) and wins in 2 of 3 categories.
For improve digestion, Ginger Extract has a higher relevance score (90 vs 68).
No known interactions between B. lactis (BB-12 / HN019) and Ginger Extract have been documented in our database. However, always consult a healthcare provider before combining supplements.
The right pick depends on your goals. Answer a few quick questions for a personalised recommendation — or dig into the full evidence on each.