Biotin Replacement Therapy Guidelines

Oral Replacement in Adults with Malabsorption

Oral biotin 10 mg daily is the recommended dose for adults with malabsorption or short‑bowel syndrome and reliably corrects deficiency even when intestinal absorption is compromised. 1

In patients dependent on parenteral nutrition, intravenous biotin up to 200 mg daily for 2–3 weeks is advised for rapid repletion. 1, 2
After acute repletion, maintenance with 60 µg/day IV biotin is recommended as the standard PN supplementation level. 1, 2
High‑dose IV biotin (up to 200 mg/day) has been employed extensively without evidence of toxicity. 1, 2

Pregnant individuals may need up to 300 µg daily, guided by metabolic markers such as urinary 3‑hydroxyisovaleric acid excretion. 1, 2
Standard dietary intake often falls short during pregnancy, indicating increased biotin requirements. 1

Patients receiving dialysis may require biotin doses exceeding standard recommendations to meet their needs. 1, 2

No established upper tolerable intake level exists for biotin. 1, 2
Oral or IV biotin up to 5 mg daily has been administered for prolonged periods without reported adverse effects. 1, 2
Parenteral doses as high as 300 mg daily have been used safely in nutrition support regimens. 1, 2

Therapy should be continued until biochemical markers normalize and clinical symptoms resolve. 1

The American Academy of Medical Genetics recommends administering 5-20 mg of biotin daily orally in children and adults with biotin deficiency or biotinidase deficiency, with profound biotinidase deficiency requiring lifelong treatment at 5-10 mg/day 3
For biotinidase deficiency, the standard treatment dose is 5-10 mg daily orally for lifelong therapy, with all symptomatic children showing clinical improvement within hours to days 3
Treatment prevents symptom development in presymptomatic children when initiated early, and conservative approach recommends treating all individuals with partial deficiency to prevent symptoms during metabolic stress 3

For preterm and term infants up to 12 months on parenteral nutrition, the recommended dose is 5-8 mcg/kg/day, while children over 12 months require 20 mcg/day for maintenance 4, 5
For PN-dependent patients with deficiency, IV biotin up to 200 mg/day for 2-3 weeks is recommended, with standard maintenance being 60 mcg/day IV (Grade B recommendation) 6

Pregnancy may require up to 300 mcg/day based on metabolic markers, while breastfeeding requires at least 35 mcg/day orally 6, 7
Patients on dialysis may require additional biotin beyond standard recommendations, with one study using 10 mg daily in three divided doses for uremic neurologic disorders 6, 7

No upper tolerable limit has been established for biotin, with no adverse effects reported with oral or IV doses up to 5 mg/day for prolonged periods, and high doses up to 300 mg/day have been used in parenteral nutrition without toxicity 6, 7, 8
Biotin interferes with laboratory immunoassays, and patients taking biotin >5 mg/day should discontinue supplementation for at least 72 hours before laboratory testing, although this fact is not directly cited, the importance of monitoring is emphasized 3