[Injectable phenytoin: problems of stability in solution].
Because of its efficient antiseizure activity, intravenous phenytoin remains a major agent in acute therapy, although it is associated with many pharmacokinetical and toxicological problems. This contribution focuses on the difficulties in finding the appropriate mode of intravenous administration, a matter which is of considerable clinical importance. The fact that precipitations of phenytoin occur when the product is incorrectly diluted is common knowledge--yet the pharmacy department is frequently contacted because of an improper handling of the products available. A review of the factors contributing to precipitation problems, the i.v. products in use in the Grand-Duchy of Luxembourg and the possible i.v. dilutions for these products are discussed.