Compare Supplements

Side-by-side comparison of 2 supplements

Lp25.0

L. plantarum 299v

High safety

LF6.3

Lactoferrin

Moderate safety

Evidence

Mostly mechanism / observational

Evidence Score5/10

Studies: 16

Meta-analyses: 2

Mostly mechanism / observational

Evidence Score6.3/10

Studies: 30

Meta-analyses: 8

Outcome Verdicts

Prenatal supportToo few graded studies

Prenatal supportLikely helps

Plain-language verdict per shared outcome, pooled from the studies behind each supplement. Shows which one the evidence backs for the same goal.

Pooled effect-size head-to-headBeta

Direct side-by-side from the meta-analysis. Each row is an outcome where ≥2 of your selected supplements have pooled data. Best effect per row highlighted.

Outcome	L. plantarum 299v	Lactoferrin
Prenatal support — Maternal Hemoglobin + better · g/dL	+0.5 weak	+1.2best moderate

Click an outcome to see the full ranked table on the goal page.

Dosage & timing

Dosage:

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)

Best Time:

With meals · with food

Take with food

Form:

Freeze-dried capsule standardized to 299v (DSM 9843)

Dosage:

300mg

Best Time:

Between meals

Can take on empty stomach

Form:

Bovine lactoferrin capsule or powder (≥95% purity)

What you'll notice

🧲 Better iron absorption from the same mealpositive

Immediate, per meal

🤰 Better iron status in pregnancypositive

12-25 weeks

🌀 IBS pain and bloating relief (low certainty)neutral

4 weeks

🛡️ Fewer Respiratory Infectionspositive

4–8 weeks of use

🩸 Improved Iron Statuspositive

4–8 weeks

🔥 Lower Inflammatory Markerspositive

4–8 weeks

Safety

High safety

Contraindications:

Immunocompromise or immunosuppression (class-level precaution for live probiotics)
Critical illness or indwelling central venous catheter
Short-bowel syndrome or compromised gut barrier

Drug Interactions:

Oral iron supplements
Systemic antibiotics

Side Effects:

Transient gas or bloating

Moderate safety

Contraindications:

Known allergy to bovine milk proteins (risk of cross-reactivity)
Hemochromatosis or iron overload conditions (holo-lactoferrin form could worsen iron loading)
Active malignancy — theoretical concern due to growth-promoting activity on epithelial cells (consult oncologist)

Drug Interactions: