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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
Too few graded studies
Top outcomes
Verdict
Likely helps
5 of 5 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 time of day
Capsule or sachet standardized to a named strain (BB-12 or HN019)
480-1,000 mg extract daily. The lowest cited dose that helped was 480 mg a day of steamed ginger extract, for gastric symptoms. In a cited chemotherapy-nausea trial, 250 mg and 500 mg ginger capsules did no better than placebo.
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
Meta-analysis of 47 RCTs (3,852 participants) testing 15 dietary polyphenols in rheumatoid arthritis. Ginger extract was tested in only one of those RCTs.
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 documented interaction was found in the data searched. This does not establish that this exact combination is safe.
The right pick depends on your goals. Answer a few quick questions for a personalised recommendation — or dig into the full evidence on each.