Neuro-B's/Neuro-B's 500 Drug Interactions

Neuro-B's: Vitamin B₆ (pyridoxine hydrochloride) reduces the therapeutic effects of Levodopa.
Neuro-B's 500: Pyridoxine Hydrochloride (Vitamin B6) reduces effects of levodopa (unless a dopa decarboxylase inhibitor is also given) and altretamine; decreases serum concentrations of Phenobarbital; requirement is increased when given concurrently with isoniazid, penicillamine, and oral contraceptives; hydralazine may increase pyridoxine requirements.
Cyanocobalamin (Vitamin B12) absorption from the gastrointestinal tract is reduced in the presence of aminoglycosides, anticonvulsants, biguanides, chloramphenicol, cholestyramine, cimetidine, methyldopa and potassium salts. Inhalation of the anesthetic agent nitrous oxide, anesthetic can produce a functional Vitamin B12 deficiency and colchicines; decreased serum concentrations with concurrent administration of oral contraceptives.