Compare Supplements

Side-by-side comparison of 2 supplements

Fe9.0

Iron

Moderate safety

Lre6.0

L. reuteri DSM 17938

High safety

Evidence

Likely helps

Evidence Score9/10

Studies: 779

Meta-analyses: 17

Mostly mechanism / observational

Evidence Score6/10

Studies: 57

Meta-analyses: 5

Dosage & timing

Dosage:

30mg elemental iron

Best Time:

Between meals

Can take on empty stomach

Form:

Ferrous bisglycinate (gentle, well-absorbed) or iron protein succinylate

Dosage:

1 x 10^8 CFU daily (5 drops) for infant colic — the dose used in every positive trial

Best Time:

Any time

Can take on empty stomach

Form:

Oil-suspension drops standardized to DSM 17938

What you'll notice

⚡ Energy Restorationpositive

2-4 weeks

🧠 Cognitive Functionpositive

4-8 weeks

🏃 Exercise Performancepositive

4-12 weeks

🍼 Less crying in colicky breastfed infantspositive

1-3 weeks

🚫 No benefit in formula-fed infantsnegative

n/a

💧 Shorter acute childhood diarrhoeapositive

1-3 days

Safety

Moderate safety

Contraindications:

Hemochromatosis or iron overload
Repeated blood transfusions
Adequate iron stores (test first!)

Drug Interactions:

Thyroid medications (levothyroxine)
Antacids, PPIs
Antibiotics (fluoroquinolones, tetracyclines)

Side Effects:

ConstipationNausea/GI upsetDark stools

High safety

Contraindications:

Immunocompromise or immunosuppression
Critical illness
Indwelling central venous catheter

Drug Interactions:

Systemic antibiotics

Side Effects:

Increased fussing in formula-fed infantsBloodstream infection in immunocompromised or critically ill patients

Works well with

Vitamin C

enhances

B-Complex (B12, Folate)

complementary

Molybdenum

enhances

Probiotics

complementary

How they work together

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