Patients who are taking diuretics should seek medical advice before using this product.
Patients who are taking a levodopa-containing medicine should seek medical advice before using this product.
Some medicines lower the effectiveness of vitamin B6 treatment. These include pyridoxine antagonists such as isoniazid, cycloserine, penicillamine or hydralazine. Patients who are taking any of these medicines should seek medical advice before using this product.