These cells fight infection and clot blood. In addition to the above, there are other possible side effects of Dilantin, most of which are rare or are not clinically significant. Dilantin has an effect on Vitamin D metabolism. In children who receive typical sunshine exposure, Vitamin D metabolism remains unchanged. Toxic symptoms are symptoms experienced when the blood Dilantin level is too high.
Double vision can also occur and is sometimes the only apparent sign of toxicity.
We will usually recommend checking a Dilantin level 4 weeks after reaching a therapeutic dose, and every 4-12 months thereafter. Generally, these interactions are not clinicially important in the pediatric population. Serum drug levels are especially helpful when possible drug interactions are suspected. Also the development of certain types of liver disease can cause the blood level to rise, because Dilantin is metabolized by the liver. Some of the more common drugs that may decrease Dilantin levels are Tegretol, and chronic alcohol abuse.