Store in cool, dry place. May cause inaccurate tests for sugar in urine or blood in stool. May cause crisis in patients with sickle-cell anemia. A balanced diet should provide all the vitamin C a healthy person needs and make supplements unnecessary. Best sources are citrus, strawberries, cantaloupe and raw peppers.
Some products contain tartrazine dye.
Aspirin Decreased vitamin C effect and salicylate excretion. Increased barbiturate effect. Cellulose sodium phosphate Decreased vitamin C effect. Mexiletine Possible decreased effectiveness of mexiletine. Quinidine Possible decreased quinidine effect.