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Biotin Update

Ailment Hair Growth

Side Effects Reported

None reported.

Severity

None

Experience Details

Biotin only, 40000 IU without B12: no clear benefit, pain in the penis, and not much filling. Eyesight became very blurry and did not improve. After adding back 1000 mcg B12, eyesight improved. B12 cyanocobalamin with 10000 IU biotin caused pain in the penis.

HH
Health Hacker Sep 21, 2026 · Updated Sep 25, 2026
Important Disclaimer: This information is for educational purposes only. Consult a healthcare provider before making any health decisions.

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