Pyridoxine Dosage

Medically reviewed by Drugs.com. Last updated on Apr 25, 2025.

Usual Adult Dose for Drug Induced Vitamin/Mineral Deficiency

Isoniazid induced deficiencies: 100 mg intramuscularly or intravenously once a day followed by a 30 mg maintenance dose daily

Poisoning caused by ingestion of over 10 grams of isoniazid: Give an equal amount of pyridoxine, starting with 4 grams intravenously followed by 1 gram intramuscularly every 30 minutes

Usual Adult Dose for Dietary Supplement

Injectable:
Dietary deficiency: 10 to 20 mg intramuscularly or intravenously once a day for 3 weeks

• Follow up with an oral multivitamin containing 2 to 5 mg pyridoxine daily for several weeks.
• Correct poor dietary habits; prescribe a well balanced diet.

Recommended dietary allowance of vitamin B6:
18 years, male: 1.3 mg/day
18 years, female: 1.2 mg/day
19 to 50 years (both genders): 1.3 mg/day
51 to 70 years, male: 1.7 mg/day
51 to 70 years, female: 1.5 mg/day
Pregnancy: 1.9 mg/day
Lactation: 2 mg/day

Usual Adult Dose for Seizures

Injectable:
Vitamin B6 dependency syndrome: Up to 600 mg intramuscularly or intravenously daily, with a daily intake of 30 mg for life

Usual Pediatric Dose for Dietary Supplement

Adequate intake of vitamin B6:
0 to 6 months: 0.1 mg/day
7 to 12 months: 0.3 mg/day
Estimated adequate intake of vitamin B6:
1 to 3 years: 0.4 mg/day
4 to 8 years: 0.5 mg/day
9 to 13 years: 0.8 mg/day
14 to 18 years, male: 1.1 mg/day
14 to 18 years, female: 1 mg/day

Recommended dietary allowance of vitamin B6:
1 to 3 years: 0.5 mg/day
4 to 8 years: 0.6 mg/day
9 to 13 years: 1 mg/day
14 to 18 years, male: 1.3 mg/day
14 to 18 years, female: 1.2 mg/day

Renal Dose Adjustments

Data not available

Liver Dose Adjustments

Data not available

Dialysis

Data not available

See also:

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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