Anticoagulants, salicylic acid derivatives, anti-inflammatory enzymes or dipyridamole potentiate the effect of heparin; antihistamines, ascorbic acid, cardiotonic glycosides, tetracycline or phenothiazine derivative antagonize the effect of heparin.
Incompatibilities: Amikacin sulfate, amiodarone HCl, chlorpromazine HCl, diazepam, doxorubicin, droperidol, erythromycin, fentanyl citrate and droperidol (innovar), gentamicin sulfate, haloperidol lactate, kanamycin sulfate, meperidine HCl, methicillin sodium, methotrineprazine, netilmicin sulfate, pentazocine lactate, promethazine HCl, streptomycin sulfate, tobramycin sulfate, triflupromazine and vancomycin HCl.