Vitamin
Biotin
Daily nutritional target
Women (19–50 yr)25 mcg
Men (19–50 yr)30 mcg
Pregnancy30 mcg
Lactation35 mcg
BasisNo data
Reference type: AI. Source: NRV Table 5.
Upper limit
Upper limitNo data
Common forms
No data
Reference details
SourceNHMRC / NZ MoH NRVs, Executive Summary v1.2 (2017), Tables 4-9
Source tableNRV Table 5
TGA permittedYes
Evidence levelB
Optimal rangeRDI: 30mcg/day general population; Pregnancy: 35mcg/day. No established UL — excess is renally excreted. Therapeutic range for hair/nail support: 2500–5000mcg/day. ⚠️ LAB TEST INTERFERENCE: High-dose biotin (≥1000mcg/day) causes false results in immunoassays using biotin-streptavidin technology — affects troponin (cardiac), TSH/T4 (thyroid), FSH/LH (fertility), vitamin D, and cortisol tests. Instruct users to pause biotin for minimum 48–72 hours before ANY blood test. This is an active TGA and FDA safety communication.
Rated products containing this nutrient
FAB HEALTH — FAB IRONA+Blackmores — Pregnancy & Breast-Feeding GoldA+Blackmores — Blackmores Multivitamins for 50+A+Blackmores Ltd — BLACKMORES MULTIVITAMINS FOR WOMENASwisse — Teenage Men's MultivitaminAFAB HEALTH — FAB IRON + Vitamin B ComplexACentrum — Centrum for Women 50+ABlackmores Ltd — BLACKMORES HAIR GROWTH & SCALP ULTRAACenovis — Men's Multi+ Performance Once DailyACenovis — Cenovis 50+ MultiABlackmores Ltd — BLACKMORES SUPERKIDS MULTI CHEWABLESB+Blackmores Ltd — BLACKMORES MEGA B COMPLEXB+
Not medical advice. Reference values from NHMRC / NZ MoH Nutrient Reference Values.
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Magnesium supplement
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Magnesium300 mg
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Vitamin B645 mg
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