Some clinicians use an oral loading dose in adults who require rapid steady-state serum levels and where IV administration is not desirable. Risks involved outweigh potential benefits. Wear a medical alert tag or carry an ID card stating that you take phenytoin.
Due to an increased fraction of unbound phenytoin in patients with renal disease, the interpretation of total phenytoin plasma concentrations should be made with caution. The easiest way to lookup drug information, identify pills, check interactions and set up your own personal medication records.
Side effects in more detail.
Dosing & Uses
Always consult your doctor or pharmacist. If IM administration is required, compensating dosage adjustments are necessary to maintain therapeutic plasma levels. Positive evidence of human fetal risk. Other Restrictions Drugs that have restrictions other than prior authorization, quantity limits, and step therapy associated with each prescription.
Report any new or worsening symptoms to your doctor, such as: If you become pregnant while taking phenytoin, your name may be listed on a pregnancy registry.
Phenytoin may cause harm to an unborn baby, but having a seizure during pregnancy could harm both mother and baby. Tell your doctor if you are using:. Oral except suspension Loading dose: Not effective for absence seizures; if tonic-clonic and absence seizures present, combined drug therapy needed.
Formulary Formulary Patient Discounts. Usual Adult Dose for: Ask your doctor about using non hormonal birth control condom, diaphragm with spermicide to prevent pregnancy while taking this medicine. This restriction requires that specific clinical criteria be met prior to the approval of the prescription.
Individual plans may vary and formulary information changes. Increased cardiovascular risk associated with rapid infusion; monitor during and after therapy; rate reduction or discontinuation may be needed. Initially, 1 gm is divided into 3 doses mg, mg, mg and administered at 2 hour intervals. Skip the missed dose if it is almost time for your next scheduled dose. If you log out, you will be required to enter your username and password the next time you visit. Do not crush, chew, break, or open an extended-release capsule.
Avoid taking antacids at the same time you take phenytoin.