Phenytoin warfarin
Common Questions and Answers about Phenytoin warfarin
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At high concentrations in vitro, clopidogrel inhibits P450 (C). Accordingly, Plavix may interfere with the metabolism of phenytoin, tamoxifen, tolbutamide, warfarin, torsemide, fluvastatin, and many non-steroidal anti-inflammatory agents, but there are no data with which to predict the magnitude of these interactions. Caution should be used when any of these drugs is co administered with Plavix.
To date there have been no reports of an important interaction in humans between warfarin and clopidogrel. Nonetheless, because warfarin increases the risk of bleeding, blood tests to measure the degree to which the blood is anti-coagulated or thinned (prothrombin time; INR) may be ordered to assess the degree of blood-thinning when warfarin and clopidogrel are used together.
In a small study, phenytoin-induced seizures occurred most often in patients with serum phenytoin concentrations of 50 mcg/ml or higher.[393] Peripheral neuropathy, usually occurring weeks to months after drug initiation, has also been reported in patients receiving phenytoin. A single case report describes the onset of neuropathy within a few hours of drug administration.[9780]
Adverse GI effects of phenytoin therapy include nausea/vomiting, constipation, abdominal pain, and anorexia.
Folic acid supplementation in folate-deficient patients with epilepsy changes the pharmacokinetics of phenytoin, usually leading to lower serum phenytoin concentrations and possible seizure breakthrough..."
It however says that initiation of Folic acid and phenytoin together is beneficial.
Since you can't go back and start all over again, you can take a small dose. It has been observed that as los as 1mg dose can perturb phenytoin’s levels, You may take doses lower than 1mg/day.
Moban® brand of molindone hydrochloride contains calcium ions which interfere with the absorption of phenytoin. Ingestion times of phenytoin and antacid preparations containing calcium should be staggered in patients with low serum phenytoin levels to prevent absorption problems”. Taken from http://www.rxlist.com/cgi/generic/phenyt_od.htm
Our population is divided into 4 type of metabolizers ranging from rapid to slow metabolizers depending upon the speed of elimination of drug from body.
Thank you for your question, you are relatively fine with Phenytoin and the seizure episodes in a form of lack of speech are the residue of a generalized type seizure. I don’t have a full description of your consciousness during the lack of speech episodes to decide whether this start is a partial epilepsy which can continue in a generalized or it is a generalized one from the first moment..
Hello AB, welcome to the medhelp forum. Phenytoin can cause certain side effects like dizziness and mental confusion. Some people may also manifest incoordinate movements. Weight gain is not a documented side effect. It could be related to your alcohol consumption or wrong dietary habits and lack of exercise. An occasional one or two drink may be fine but moderate or large amount can cause significant increases in blood levels of phenytoin due to induction of hepatic enzymes.
Given that yesterday he said to not take the warfarin he was changing me from the genertic warfarin and putting me on the brand name of the med coumadin. Said some folks do not tolerate warfarin well but do well on coumadin and i am to start the coumadin today. I would be lying if i didn't say i am a bit gunshy at this point. This med has made me absolutely miserable and today is my 43rd bday...
During those times I had not yet been diagnosed and was able to go back to life like normal, however after the diagnosis and being on phenytoin and switching to oxcarbazepine i am feeling awful. Dizzy, nauseated, moody, extremely tired, severe headaches that come and go. All i get from my Neurologist is these are side effects that will eventually go away. Because i never know when these symptoms will come on too strong I have missed a lot of days at work during my probation period.
DOES ANYONE KNOW IF WARFARIN CAN LOWER YOUR BLOOD COUNT AND AND ALSO LOWER CALCIUM AND VITAMIN D LEVELS?
ve tried to read as much as I can about warfarin along the way. I even went to a day-long CEU workshop for medical professionals on warfarin management and got the certificate. But I'm still not an expert. To my way of thinking, the experts are the hematologists, pharmacists, and other health professionals who manage large numbers of people's warfarin on a daily basis.
3 days later (boxing day) I was rushed to hospital with chest pains and diagnosed with self imposed pulmonary embolism. I was put on to Warfarin and monitored in hospital for 2 weeks.
t know how warfarin is affecting your life style. I have been on warfarin for years and had no concerns about running and bike riding, and using power wood working tools. All of these activities puts one at an increased risk of a cut and bleeding, but I simply take the risk. On the other hand, I don't sky dive, or pick fights ....
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