FOSPHENYTOIN SODIUM (Generic for CEREBYX)

Fosphenytoin Sodium 75mg/1mL, Solution for injection

Cannabis

· Severity: Major

· Notes for Consumers: Discuss cannabis use with your care team. The effects of cannabis may be altered if used with your medication.

· Notes for Professionals: Advise patients to avoid cannabis use during fosphenytoin treatment. Concomitant use may decrease the concentration of some cannabinoids and alter their effects. The cannabinoids delta-9-tetrahydrocannabinol (THC) and cannabidiol (CBD) are CYP3A substrates and fosphenytoin is a strong CYP3A inducer. Concomitant use of a cannabinoid product containing THC and CBD at an approximate 1:1 ratio with another strong CYP3A inducer decreased THC, 11-OH-THC, and CBD peak exposures by 36%, 87%, and 52% respectively.

Fosphenytoin Sodium 75mg/1mL, Solution for injection

Alcohol

· Severity: Major

· Notes for Consumers: Do not drink alcohol while taking this medication. Drinking alcohol may alter the effects of your medication. Serious side effects may occur. Contact your care team if you experience new or worsening side effects.

· Notes for Professionals: Phenytoin theoretically can add to the CNS-depressant effects of alcohol. Chronic ingestion of alcohol induces hepatic microsomal isozymes and increases the clearance of phenytoin. Alcohol also exhibits epileptogenic potential. Alcohol should generally be avoided in patients on fosphenytoin or phenytoin. Acute ingestion of small amounts of ethanol in non-alcoholic patients does not appear to affect the hepatic metabolism of phenytoin to a clinically significant degree.

Fosphenytoin Sodium 75mg/1mL, Solution for injection

Caffeine-containing Foods/Beverages

· Severity: Moderate

· Notes for Consumers: Hydantoins may decrease the actions of Caffeine; if you have a high intake of caffeinated foods or beverages you may experience a headache or irritability from decreased caffeine levels while taking these drugs until your body adjusts. If you take Caffeine for other purposes, notify your health care provider if you think Caffeine is not working as well for you.

· Notes for Professionals: Higher caffeine doses may be needed after hydantoin administration; hydantoins increase caffeine elimination.

<b>DISCLAIMER:</b><em> This drug information content is provided for informational purposes only and is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Patients should always consult their physician with any questions regarding a medical condition and to obtain medical advice and treatment. Drug information is sourced from GSDD (Gold Standard Drug Database ) provided by Elsevier.</em>