Compare Supplements

Side-by-side comparison of 2 supplements

Fe9.0

Iron

Moderate safety

Lgg6.0

L. rhamnosus GG

High safety

Evidence

Likely helps

Evidence Score9/10

Studies: 779

Meta-analyses: 17

Mostly mechanism / observational

Evidence Score6/10

Studies: 44

Meta-analyses: 8

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:

10-20 billion CFU (1-2 x 10^10) daily; 10 billion CFU/day is the effective floor

Best Time:

Any time · with food

Take with food

Form:

Capsule standardized to ATCC 53103

What you'll notice

⚡ Energy Restorationpositive

2-4 weeks

🧠 Cognitive Functionpositive

4-8 weeks

🏃 Exercise Performancepositive

4-12 weeks

💊 Fewer antibiotic-associated diarrhea episodespositive

During the antibiotic course

🏥 Less hospital-acquired diarrhea in childrenpositive

During hospital stay

🚫 No benefit for treating a stomach bugnegative

n/a

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 (transplant, chemotherapy, advanced HIV)
Critical illness / ICU admission
Indwelling central venous catheter

Drug Interactions:

Systemic antibiotics
Immunosuppressants

Side Effects:

Mild gas or bloatingBloodstream infection (bacteremia)

Works well with

Vitamin C

enhances

B-Complex (B12, Folate)

complementary

Molybdenum

enhances

Saccharomyces boulardii

complementary

Probiotics

complementary

How they work together

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