How Calcium interacts with isoniazid

Interaction type: Depletions

Interaction rating: Proven

Isoniazid decreases both vitamin D and calcium levels in the body. Check with your healthcare professional to determine if supplementation with this nutrient is necessary. (1)


  1. View Abstract: Brodie MJ, et al. Effect of Isoniazid on Vitamin D Metabolism and Hepatic Monooxygenase Activity. Clin Pharmacol Ther. Sep1981;30(3):363-67.