Ergocalciferol Capsules and Tablets and Phenytoin Sodium, Prompt injection
Determining the interaction of Ergocalciferol Capsules and Tablets and Phenytoin Sodium, Prompt injection and the possibility of their joint administration.
In the database of official manuals used in the service creation an interaction registered by statistical results of studies was found, which can either lead to negative consequences for the patient health or strengthen a mutual positive effect. A doctor should be consulted to address the issue of joint drug administration.
Consumer:Using phenytoin together with ergocalciferol may decrease the effects of ergocalciferol. Contact your doctor if your condition changes. If your doctor does prescribe these medications together, you may need a dose adjustment or special test to safely use both medications. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
Professional:MONITOR: Coadministration with CYP450 inducers such as rifampin, isoniazid, barbiturates, and certain anticonvulsants may decrease the pharmacologic effects of vitamin D analogs. These agents are thought to induce the hepatic conversion of vitamin D to inactive metabolites and have been shown to reduce circulating levels of active vitamin D, sometimes accompanied by reduced serum calcium and increased parathyroid hormone levels. Patients on long-term anticonvulsant therapy have occasionally developed osteomalacia, presumably due to interference with vitamin D and calcium metabolism. There have also been isolated reports of patients who responded poorly to vitamin D supplements during treatment with phenytoin and/or primidone.
MANAGEMENT: Patients receiving vitamin D analogs with CYP450 inducers should be monitored for potentially reduced vitamin D effects. Dosage adjustments may be necessary.
- "Product Information. Zemplar (paricalcitol)." Abbott Pharmaceutical, Abbott Park, IL.
- "Product Information. Rocaltrol (calcitriol)." Roche Laboratories, Nutley, NJ.
- "Product Information. One-Alpha (alfacalcidol)." Pharmel Inc, Montreal, IN.
- "Product Information. Hectorol (doxercalciferol)." Genzyme Corporation, Cambridge, MA.
Generic Name: ergocalciferol
Brand name: Calcidol, Calciferol, Drisdol, Vitamin D2
Synonyms: Ergocalciferol
Generic Name: phenytoin
Brand name: Dilantin, Phenytoin Sodium, Prompt, Phenytek, Dilantin Infatabs
Synonyms: Phenytoin Sodium, Prompt (injection)
In the course of checking the drug compatibility and interactions, data from the following reference sources was used: Drugs.com, Rxlist.com, Webmd.com, Medscape.com.
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