Loading…
We use essential cookies (authentication, your saved goals/stack) by default. With your permission we’ll also enable privacy-respecting analytics (Vercel Web Analytics, anonymous load-time metrics) and error-replay diagnostics (Sentry — DOM snapshots only when an error fires) so we can fix bugs faster. Learn more about cookies
Head-to-head evidence comparison — which supplement is right for you?
Lactase vs L. plantarum 299v: they're closely matched on evidence (5.5 vs 5/10); 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.
Lactase and L. plantarum 299v are closely matched across evidence, studies, and safety.
Verdict
Too few graded studies
Top outcomes
Verdict
Too few graded studies
Top outcomes
Shared outcomes (1)
Outcomes where both Lactase and L. plantarum 299v have evidence — compare verdict strength side-by-side.
Taken per lactose-containing meal, not as a daily dose. Trials gave 3,000 to 11,250 units of lactase (mostly FCC units) immediately before or with a single dairy or lactose challenge. One 2022 trial used 4,662 FCC units and describes 4,500 FCC units as the amount in the EU-approved health claim. More lactose needs more enzyme: 50 g of lactose given in water overwhelmed about 6,000 units in one trial. Products differ, so dose by the enzyme units on the label rather than by tablet count.
With meals
Lactase tablets, capsules or chewables labelled in FCC units, taken with dairy
1 x 10^9 CFU (1 billion) daily taken WITH the iron-containing meal is sufficient for the iron effect — in the dual-isotope crossover trial 10^9 was significant (28.6% vs 18.5%, p<0.028) while 10^10 was NOT (29.1% vs 20.1%, p=0.080). The freeze-dried capsule and IBS trials used 1 x 10^10 CFU daily, and the pregnancy trial used 1 x 10^10 CFU twice daily (2 x 10^10 CFU/day)
With meals
Freeze-dried capsule standardized to 299v (DSM 9843)
Hours (same meal)
Hours (same meal)
Hours (same meal)
Hours (same meal)
Immediate, per meal
12-25 weeks
4 weeks
n/a
Systematic review: effective management strategies for lactose intolerance.
Annals of Internal Medicine (2010) · Systematic review
36 randomised trials met the inclusion criteria, 26 of them on lactase- or lactose-hydrolysed milk supplements, lactose-reduced milk, or tolerable doses of lactose.
Effect of lactase supplementation on infant colic: Systematic review of randomized controlled trials.
Journal of Pediatric Gastroenterology and Nutrition (2024) · Meta analysis · n=391
Five randomised trials with 391 infants under 6 months old with colic were included.
The effect of oral supplementation with Lactobacillus reuteri or tilactase in lactose intolerant patients: randomized trial.
European Review for Medical and Pharmacological Sciences (2010) · Rct · n=60
60 lactose-intolerant patients were randomised to tilactase taken 15 minutes before a lactose breath test, placebo, or Lactobacillus reuteri twice daily for 10 days beforehand (20 per group).
A Systematic Review and Meta-Analysis on the Effects of Probiotic Species on Iron Absorption and Iron Status.
Nutrients (2019) · Meta analysis
Pooled SMD 0.55 (95% CI 0.22-0.88, p=0.001) for increased iron absorption across 8 studies
The effect of Lactiplantibacillus plantarum 299v together with a low dose of iron on iron status in healthy pregnant women: A randomized clinical trial.
Acta Obstet Gynecol Scand (2021) · Rct · n=326
Iron deficiency at week 35: 59% vs 78% (p=0.017); iron-deficiency anaemia 7.4% vs 21% (p=0.023)
Efficacy of Probiotics in Irritable Bowel Syndrome: Systematic Review and Meta-analysis.
Gastroenterology (2023) · Meta analysis
For global IBS symptoms, certainty of evidence was LOW for this strain (moderate only for Escherichia strains)
Both Lactase and L. plantarum 299v are closely matched — the best choice depends on your specific health goals.
For improve digestion, L. plantarum 299v has a higher relevance score (50 vs 45).
No known interactions between Lactase and L. plantarum 299v 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.