Compare Supplements

Side-by-side comparison of 2 supplements

Bbr9.0

Berberine

Moderate safety

A9.0

Vitamin A

Moderate safety

Evidence

Evidence Score9/10

Studies: 97

Meta-analyses: 20

Evidence Score9/10

Studies: 46

Meta-analyses: 34

Outcome Grades

Healthy agingB

Healthy agingA

A-F grade per outcome, combining overall evidence with goal-specific relevance. A = strong evidence; F = insufficient. Hover a badge for details.

Dosage & timing

Dosage:

1200mg

Best Time:

With meals · with food

Take with food

Form:

Berberine HCl capsules

Dosage:

2500-5000 IU daily (retinol); up to 25000 IU (beta-carotene)

Best Time:

With meals · with food

Take with food

Form:

Mixed carotenoids or low-dose retinyl palmitate

What you'll notice

📉 Lower Blood Sugar80%

4-12 weeks

❤️ Improved Cholesterol65%

8-12 weeks

🤢 GI Side Effects35%

First 2 weeks

👁️ Vision Support80%

2-4 weeks

🛡️ Immune Support70%

2-4 weeks

✨ Skin Health65%

4-8 weeks

Safety

Moderate safety

Contraindications:

Pregnancy and breastfeeding
Low blood pressure
Children

Drug Interactions:

Diabetes medications (metformin, insulin, etc.)
Blood pressure medications
CYP450 substrates (many medications)

Side Effects:

GI upset (cramping, diarrhea)ConstipationHeadache

Moderate safety

Contraindications:

Pregnancy (high-dose retinol is teratogenic)
Liver disease

Drug Interactions:

Retinoid medications (Accutane)
Orlistat
isotretinoin

Side Effects:

Hypervitaminosis ASkin yellowing (beta-carotene)

Works well with

complementary

complementary

complementary

complementary

How they work together

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