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Some Drugs and Medications That Cause Vitamin Deficiency

Drug or Medication

Vitamin

Alcohol

Folate

Thiamin

Vitamin B6

Antacids

Vitamin B12

Antibiotics, such as isoniazid, tetracycline, and trimethoprim-sulfamethoxazoleAntibiotics, such as isoniazid, tetracycline, and trimethoprim-sulfamethoxazole

B vitamins

Folate

Vitamin K

Anticoagulants, such as warfarinAnticoagulants, such as warfarin

Vitamin E

Vitamin K

Antiseizure medications, such as phenytoin and phenobarbitalAntiseizure medications, such as phenytoin and phenobarbital

Biotin

Folate

Vitamin B6

Vitamin DVitamin D

Vitamin K

Antipsychotic medications

Riboflavin

Vitamin DVitamin D

Barbiturates such as phenobarbitalBarbiturates such as phenobarbital

Folate

Riboflavin

Vitamin DVitamin D

Chemotherapy medications, such as methotrexateChemotherapy medications, such as methotrexate

Folate

CholestyramineCholestyramine

Vitamin A

Vitamin DVitamin D

Vitamin E

Vitamin K

Corticosteroids

Vitamin C

Vitamin DVitamin D

CycloserineCycloserine

Vitamin B6

HydralazineHydralazine

Vitamin B6

LevodopaLevodopa

Vitamin B6

Mineral oil (long-term use)Mineral oil (long-term use)

Vitamin A

Vitamin D

Vitamin E

Vitamin K

MetforminMetformin

Folate

Vitamin B12

Nitrous oxide (repeated exposure)

Vitamin B12

Oral contraceptives

Folate

Thiamin

Vitamin B6

PenicillaminePenicillamine

Vitamin B6

Phenothiazines

Riboflavin

Primidone Primidone

Folate

Vitamin D

RifampinRifampin

Vitamin D

Vitamin K

Thiazide diuretics

Riboflavin

TriamtereneTriamterene

Folate

Tricyclic antidepressants, such as amitriptyline and imipramineTricyclic antidepressants, such as amitriptyline and imipramine

Riboflavin

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