Phenytoin sketchy

A lumbar puncture, electroencephalogram, and computed tomographic scan of the head were unrevealing. Review of the electronic medical record (EMR) revealed that the patient had been prescribed 3 times his home dosage of phenytoin (300 mg 3 times daily) since admission, which had been administered through a nasogastric tube.

Phenytoin sketchy. 2 anti-seizure drugs that can cause osteoporosis. carbamazepine. phenytoin. blood side effect shared by carbamazepine and phenytoin that is not agranulocytosis. megaloblastic anemia. 3 side effects of valproate besides weight gain not mentioned in sketchy. hair loss. thrombocytopenia. polycystic ovaries.

Phenytoin ( PHT ), sold under the brand name Dilantin among others, [1] is an anti-seizure medication. [3] It is useful for the prevention of tonic-clonic seizures (also known as grand mal seizures) and focal seizures, but not absence seizures. [3] The intravenous form, fosphenytoin, is used for status epilepticus that does not improve with ...

Fake stories and viral content are here to stay. This week, Facebook’s top two executives have touted the company’s effort to fight fake news. But according to Facebook engagement ...ACEM Primary Pharmacology of Antiarrhythmic Agents: the Pharmacokinetics; Pharmacodynamics; Clinical uses; Adverse effectsNov 17, 2020 · Phenytoin and fosphenytoin. Phenytoin is one of the longest-standing antiepileptic drugs used in the treatment of SE. When delivered intravenously, phenytoin should be diluted in normal saline and injected directly into a large vein. The concentration of phenytoin in the injected solution should not exceed 10 mg/mL. DIS stock hasn't performed well during Disney's CEO's tenure. However, investors should consider the macro-level challenges during this time. DIS stock investors can remain confide...Pt 2- phenytoin- and oxcarbazepine-induced urticarial rash: LEV was stopped immediately and replaced with sodium valproate CR 400 mg twice daily along with clobazam 10 mg daily: Managed symptomatically: After 2 months of follow-up, no recurrence of seizures or rash was seen: Oh et al., [23] Unremarkable: LEV was stopped immediatelyWeek 5 Antiepileptic Drugs Sketchy. "Seize the Land"- name the drugs. Click the card to flip 👆. Valproate. Topiramate. Lamotrigine. Levetiracetam. broad spectrum antiepileptics. Click the card to flip 👆.3525 Del Mar Heights Rd, Ste 304. San Diego, CA 92130-2122. Toll Free (U.S. + Canada): 800-452-2400. US Number: +1-619-640-4660. Support: [email protected]. Editor: [email protected]. ISSN: 2831-9125. Phenytoin is indicated for the control of generalized tonic-clonic and complex partial seizures and for …Phenytoin is a medication used to treat epilepsy (seizure disorder). If phenytoin is taken by the mother in the first trimester, there is approximately a 5 to 10 percent chance that the baby could be born with a combination of birth defects known as the Fetal Hydantoin Syndrome. Babies with this syndrome may be born with some of the following ...

Effect of lacosamide (LCM), carbamazepine (CBZ), lamotrigine (LTG) and phenytoin (PHT) on sodium current parameters (all drugs at a concentration of 100 μmol/L). Lacosamide differs from the other antiepileptic drugs because of the lack of effects on fast inactivation and on time to recovery from fast activation. Sodium current parameter.Oct 2, 2012 · Abstract. Fetal hydantoin syndrome is a rare disorder that is believed to be caused by exposure of a fetus to the anticonvulsant drug phenytoin. The classic features of fetal hydantoin syndrome include craniofacial anomalies, prenatal and postnatal growth deficiencies, underdeveloped nails of the fingers and toes, and mental retardation. Phenytoin is a hydantoin compound related to the barbiturates that are used for the treatment of seizures. It is an effective anticonvulsant for the chronic treatment of tonic-clonic (grand mal) or partial seizures and the acute treatment of generalized status epilepticus ( Table 10-1 ). 1, 2 After generalized status epilepticus has been ... Folate ( vitamin B9) is a water-soluble vitamin that is mainly found in leafy green vegetables and fruits. It is important for the development of new cells, and it helps to form red blood cells. A folate deficiency can lead to anemia, and it can also increase the risk of neural tube defects in newborn babies. Symptoms of a folate deficiency can ...Melatonin acts through MT1 and MT2 receptors to suppress firing of SCN neurons, thereby disinhibiting the sleep-promoting neurons in the VLPO. Melatonin also suppresses excitatory signals from SCN to lateral HTH which secretes orexin (hypocretin) which acts on OX1 and OX2 receptors to activate monoamine arousal systems.

Folate ( vitamin B9) is a water-soluble vitamin that is mainly found in leafy green vegetables and fruits. It is important for the development of new cells, and it helps to form red blood cells. A folate deficiency can lead to anemia, and it can also increase the risk of neural tube defects in newborn babies. Symptoms of a folate deficiency can ...Carmustine Implant: learn about side effects, dosage, special precautions, and more on MedlinePlus Carmustine implant is used along with surgery and sometimes radiation therapy to ...Study with Quizlet and memorize flashcards containing terms like Focal arm shaking: narrow spectrum antiepileptic agents (e.g. carbamazepine, phenytoin) treat focal seizures (and generalized tonic-clonic), Classic car: carbamazepine (narrow spectrum antiepileptic drug), Inactivated salty sodium chip bags: carbamazepine increases Na+ channel …General. Type: Anticonvulsants. Dosage Forms: capsules 50, 100, 200, 300 125/5 mL IM/IV. Common Trade Names: Dilantin, Phenytek. Often combined with propylene glycol to increase water solubility. If infused too quickly, can lead to dysrhythmias, hypotension, bradycardia, seizures, and lactic acidosis.Jul 19, 2020 · Clinical uses. Prevention of focal seizures and generalised tonic-clonic seizures in epilepsy. Therapeutic level 10-20mg/L. At low blood levels, 5-7 days are needed to reach steady-state blood levels after every dose change. At higher levels this may take 4-6 weeks. Acute treatment of status epilepticus. 3525 Del Mar Heights Rd, Ste 304. San Diego, CA 92130-2122. Toll Free (U.S. + Canada): 800-452-2400. US Number: +1-619-640-4660. Support: [email protected]. Editor: [email protected]. ISSN: 2831-9125. Phenytoin is indicated for the control of generalized tonic-clonic and complex partial seizures and for …

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Phenytoin. This aromatic AED has been available in the UK to treat focal onset seizures and status for over 60 years. It is also licensed for postsurgical/post head injury seizure prophylaxis. Cutaneous reactions seen in 5% of patients limit its use. The incidence of SJS/TEN is reported 69/100,000, and 23/100,000 for DRESS.Class IB antiarrhythmics, represented by agents like lidocaine, mexiletine, and to some extent, phenytoin, possess a low affinity for sodium channels. This results in only a modest reduction in the phase 0 upstroke speed.Sketchy Preclinical Checklist microbiology pharmacology pathology biochemistry 2021 sketchy micro bacteria chapter gram positive cocci staphylococcus aureus ... lamotrigine, levetiracetam 4 - Carbamazepine, phenytoin, gabapentin, tiagabine, vigabatrin 4 – Ethosuximide. SKETCHY PHARM. CHAPTER 5 ANTIFUNGALS 5 - Amphotericin, …Tradable credits for nature conservation bypass some of the sketchy math of carbon offsets The projections for life on earth are bleak: At the current rate, one million known speci...Preparations containing phenytoin sodium are not bioequivalent to those containing phenytoin base (such as Epanutin Infatabs® and Epanutin® suspension); 100 mg of phenytoin sodium is approximately equivalent in therapeutic effect to 92 mg phenytoin base.The dose is the same for all phenytoin products when initiating therapy. However, …Phenytoin is an antiepileptic drug which can be used in the treatment of epilepsy. The primary site of action appears to be the motor cortex where spread of seizure activity is inhibited. Possibly by promoting sodium efflux from neurons, phenytoin tends to stabilize the threshold against hyperexcitability caused by excessive stimulation or …

Phenytoin is one of the most widely prescribed antiepileptic drugs (AEDs) in the USA (approximately 52% of AED prescriptions compared with 19% for valproic acid, 11% carbamazepine, and 7% phenobarbital) [ 1 ]. It has a narrow therapeutic range and wide interindividual variability in clearance and, as such, therapeutic drug monitoring is often ...cimetidine may prolong or potentiate actions of:-warfarin -benzo's-phenytoin -propranolol-theophylline -nifedepine-phenobarbital -digoxin-quinidine -tricyclic antidepressantsNov 3, 2005 · After a study of 527 subarachnoid hemorrhage patients, the authors concluded that higher quartiles of phenytoin burden were associated with worse telephone interviews for cognitive status scores at hospital discharge (P<0.001) and at 3 months (P=0.003) as well as poor functional outcome at 14 days (P<0.001) but not at 3 months (P=0.09). The ... We would like to show you a description here but the site won’t allow us.We would like to show you a description here but the site won’t allow us.👉📖 READY TO ACE YOUR EXAM? 📚 GET STUDY NOTES ON PATREON!https://www.patreon.com/speedpharmacologyAntiepileptic drugs, also referred to as anticonvulsants,...Study Phenytoin using smart web & mobile flashcards created by top students, teachers, and professors. Prep for a quiz or learn for fun! ... Sketchy Pharm By: Natalie ...Study with Quizlet and memorize flashcards containing terms like What is the first-line drug for trigeminal neuralgia?, What is the mechanism of Carbamazepine?, What are the major side effects of Carbamazepine? and more.

In the 80 years after the first clinical use of phenytoin, a great number of hypotheses on phenytoin’s mechanism of action have been proposed. We identified …

Phenytoin 250 mg, was given intravenously over a period of three minutes. The atrial flutter persisted, but with a high degree of atrio- ventricular block, followed by asystole three minutes after the completion of phenytoin. All attempts at resuscitation failed (Unger & Sklaroff, 1967).Watch a free lesson about Carbamazepine, oxcarbazepine, phenytoin, tiagabine, vigabatrin from our Neuro/Psych unit. Sketchy Medical helps you learn faster and score higher on the USMLE Step 1 and Step 2 exams.Carbamazepine is used to manage and treat epilepsy, trigeminal neuralgia, and acute manic and mixed episodes in bipolar I disorder. Indications for epilepsy are specifically for partial seizures with complex symptomatology (psychomotor, temporal lobe), generalized tonic seizures (grand mal), and mixed seizure patterns. This activity will highlight off-label uses, mechanism of action, dosing ...Get full access to Sketchy Pharmacology and hundreds more free lessons for 7 days. Plans start at $25/mo, billed bi-annually. Shorter term lengths available. It's the one, the only, Sketchy Pharm! Get ready for a med school learning adventure that will make you laugh, cry, and remember pharmacology forever. Phenytoin is a hydantoin compound related to the barbiturates that are used for the treatment of seizures. It is an effective anticonvulsant for the chronic treatment of tonic-clonic (grand mal) or partial seizures and the acute treatment of generalized status epilepticus ( Table 10-1 ). 1, 2 After generalized status epilepticus has been ... Class IB antiarrhythmics, represented by agents like lidocaine, mexiletine, and to some extent, phenytoin, possess a low affinity for sodium channels. This results in only a modest reduction in the phase 0 upstroke speed.Mortality rates were 12%, 8%, and 10% for the phenytoin, valproic acid, and levetiracetam groups, respectively (p = 0.94). One patient in the phenytoin group suffered cardiac arrest and 2 experienced hypotension; the valproic acid group had no reported adverse events, and the levetiracetam group had 3 patients with post-ictal psychosis (p = 0.25).Phenytoin Dosing Calculator. This initial program provides some general dosage guidelines based on population averages for the Michaelis-Menten parameters (Km and Vmax). The recommendations do not take into account the following: (1) existence of interacting drugs (3) inter-patient variability (3) existing disease states which may significantly ...

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Discover the best graphic design consultant in Buenos Aires. Browse our rankings to partner with award-winning experts that will bring your vision to life. Development Most Popular...You need to be careful because pills from a different company may not work the same way in your body. Phenytoin (FEN-ih-toe-in) is the generic name (non–brand name) of a widely used seizure medicine. Common brand names for this type of medicine include Dilantin, but it is also sold using the name phenytoin or phenytoin sodium. Print. Anti-Seizure Drugs (with sketchy pictures) 50%, 15%. Click the card to flip 👆. about ___ of people respond to first medication, ___ to the second, and the rest are generally unresponsive to medication. Click the card to flip 👆. 1 / 52. Mar 21, 2024 · Initial dose (phenytoin-naive): 100 mg orally 3 times a day; tablets can be chewed thoroughly before swallowing or swallowed whole. Adjust dose as needed; most adults can be maintained on 300 to 400 mg/day in divided doses. Maximum dose: 600 mg/day. ORAL ADMINISTRATION: Oral Suspension: Initial dose (phenytoin-naive): 125 mg orally 3 times a ... Interactions. Phenytoin is an inducer of the hepatic cytochrome P450 microsomal isoenzymes CYP3A4, CYP2D6, CYP1A2, CYP2C9 and CYP2C19. Phenytoin is metabolised primarily by. CYP2C9 (major) and CYP2C19 (minor), thus several drugs may inhibit or induce the. metabolism of phenytoin.Device Manager is a central hub that lets you configure every component of your Windows operating system on your computer. Here's how to use it. Advertisement Your computer is a co...Nervous System: The most common adverse reactions encountered with phenytoin therapy are nervous system reactions and are usually dose-related. Reactions include nystagmus, ataxia, slurred speech, decreased coordination, somnolence, and mental confusion. Dizziness, vertigo, insomnia, transient nervousness, motor twitchings, paresthesias, and ...Pixorize makes visual mnemonics covering biochemistry, immunology, pharmacology, and more for the USMLE, NCLEX, and MCAT exams. Our videos are simple and mem...Jul 30, 2020 · Phenytoin, formerly known as diphenylhydantoin, is a potent anticonvulsant used to treat and prevent generalized grand mal seizures, complex partial seizures and status epilepticus. Phenytoin was formerly the most commonly used anticonvulsant agent but is now declining in use, having been replaced by more modern, better tolerated agents. Phenytoin is an uncommon but well known cause of acute ... We would like to show you a description here but the site won’t allow us. We would like to show you a description here but the site won’t allow us. ….

Preparations containing phenytoin sodium are not bioequivalent to those containing phenytoin base (such as Epanutin Infatabs® and Epanutin® suspension); 100 mg of phenytoin sodium is approximately equivalent in therapeutic effect to 92 mg phenytoin base.The dose is the same for all phenytoin products when initiating therapy. However, …The AED mechanisms of action to keep in mind are shown in Table 2. Experimental models have shown that using AEDs with different mechanisms of action provides superior efficacy of combination therapy. 13 Similarly there may be decreased efficacy when drugs with similar mechanisms of actions are combined (eg, phenytoin and carbamazepine.) 14 …General Properties of Anticonvulsants. Antiepileptic drugs (AED) can be separated by mechanism of action (MOA) affecting voltage-gated Na+ channels. …Santa's client lists get bigger every year and managing those lists gets more complicated every Christmas. Your email address will not be published. Required fields are marked * Co...Review. Pharmacology. Mechanisms of Action. Phenytoin is an AED that works by binding and stabilizing the inactivated state of sodium channels and blocks the high-frequency firing of neurons and spread of seizure activity [].]. Phenytoin is highly protein-bound and is metabolized by cytochrome P450 (CYP) enzymes, in addition to …Phenytoin Pill Images. Note: Multiple pictures are displayed for those medicines available in different strengths, marketed under different brand names and for medicines manufactured by different pharmaceutical companies. Multi-ingredient medications may also be listed when applicable. What does Phenytoin sodium extended look like?Class IB antiarrhythmics, represented by agents like lidocaine, mexiletine, and to some extent, phenytoin, possess a low affinity for sodium channels. This results in only a modest reduction in the phase 0 upstroke speed.Study this Carbamazepine mnemonic and other mnemonics with Pixorize.Carbamazepine is a drug used to treat trigeminal neuralgia, focal seizures, and bipolar d...Try the 7-day free trial to watch this lesson and more from our Pharmacology Course https://www.sketchy.com/explore/medical?utm_medium=organic_social&utm_sou...Study Sketchy Pharm: Carbamazepine, Phenytoin, Gabapentin, Tiagabine, Vigabatrin flashcards from Billy Tran's class online, or in Brainscape's iPhone or Android app. Learn faster with spaced repetition. Phenytoin sketchy, Carmustine Implant: learn about side effects, dosage, special precautions, and more on MedlinePlus Carmustine implant is used along with surgery and sometimes radiation therapy to ..., Phenytoin International Programme on Chemical Safety Poisons Information Monograph 416 Pharmaceutical 1. NAME 1.1 Substance Phenytoin 1.2 Group (N03) Antiepileptics (N03A B02) Hydantoin derivatives 1.3 Synonyms diphenylhydantoin; Fenitoina; Phenantoinum; Phenytoinum; 5,5-Diphenylhydantoin; 5,5-Diphenylimidazoline-2,4-dione …, Phenytoin Dosing Calculator. This initial program provides some general dosage guidelines based on population averages for the Michaelis-Menten parameters (Km and Vmax). The recommendations do not take into account the following: (1) existence of interacting drugs (3) inter-patient variability (3) existing disease states which may significantly ..., Phenytoin and fosphenytoin. Phenytoin is one of the longest-standing antiepileptic drugs used in the treatment of SE. When delivered intravenously, phenytoin should be diluted in normal saline and injected directly into a large vein. The concentration of phenytoin in the injected solution should not exceed 10 mg/mL., Sketchy Pharmacy currently includes 11 courses key to mastering your Pharmacy studies, including: Pharmacology, Pharmacokinetics, Biostatistics & Epidemiology, Compounding & Calculations, Pathophysiology, Microbiology, Biochemistry, Diagnosis & Management, Obstetrics & Gynecology, Pediatrics, and Disease Prevention. The Sketchy Pharmacy program ..., Sketchy Pharm. Valproic acid. Click the card to flip 👆. -Broad-spectrum anticonvulsant; inactivates Na+ channels & increases GABA. -Uses: generalized seizures (including JME) -AEs: N/V, weight gain, tremor, hepatitis /pancreatitis, teratogenic. -Inhibits CYP450., Tricyclic antidepressants (TCAs) constitute a class of medications used to manage and treat major depressive disorder (MDD). These medications function by inhibiting the reuptake of neurotransmitters, such as serotonin and norepinephrine, which can modulate mood, attention, and pain in individuals. The U.S. Food and Drug …, Risks and management of antiepileptic drug induced skin reactions in the adult out-patient setting. Thomas Fowlera, Amolak S. Bansalb, Dora Lozsádia,c,*. aSt George’s University Medical School, United Kingdom bSt Helier’s Hospital, United Kingdom cSt George’s Univ. Hospital NHS Foundation Trust, United Kingdom., Melatonin acts through MT1 and MT2 receptors to suppress firing of SCN neurons, thereby disinhibiting the sleep-promoting neurons in the VLPO. Melatonin also suppresses excitatory signals from SCN to lateral HTH which secretes orexin (hypocretin) which acts on OX1 and OX2 receptors to activate monoamine arousal systems., Do you know how MOOCs work? Learn how massive open online courses work at HowStuffWorks. Advertisement When two Stanford professors decided to offer their artificial intelligence (..., Sketchy Pharm - neuro/pscyh. Get a hint. Barbituates. Click the card to flip 👆. "Barb Shop". -Cab-A: Bind allosterically to GABA-A receptor. -Cho-rider: GABA-A receptor = chloride chanel. -"Open longer" Prolong duration of CL- channel opening "BarbiDURAtes". -Long tapering flag - Barbituates generally have long durations of action ("hangover ..., Phenytoin is indicated to treat grand mal seizures, complex partial seizures, and to prevent and treat seizures during or following neurosurgery. 14 Injectable phenytoin and …, You may have heard of moms and dads giving their teenagers alcohol as a parenting tactic—rationales include 1) it’s safer to buy it, serve it, and monitor it in a controlled enviro..., Study with Quizlet and memorize flashcards containing terms like Phenytoin (trade), Phenytoin (sketchy association), Phenytoin (action) and more., Get full access to Sketchy Pharmacology and hundreds more free lessons for 7 days. Plans start at $25/mo, billed bi-annually. Shorter term lengths available. It's the one, the only, Sketchy Pharm! Get ready for a med school learning adventure that will make you laugh, cry, and remember pharmacology forever., Pt 2- phenytoin- and oxcarbazepine-induced urticarial rash: LEV was stopped immediately and replaced with sodium valproate CR 400 mg twice daily along with clobazam 10 mg daily: Managed symptomatically: After 2 months of follow-up, no recurrence of seizures or rash was seen: Oh et al., [23] Unremarkable: LEV was stopped immediately, Phenytoin is one of the most widely prescribed antiepileptic drugs (AEDs) in the USA (approximately 52% of AED prescriptions compared with 19% for valproic acid, 11% carbamazepine, and 7% phenobarbital) [ 1 ]. It has a narrow therapeutic range and wide interindividual variability in clearance and, as such, therapeutic drug monitoring is often ..., Sep 25, 2022 · Study this ACE Inhibitors NCLEX mnemonic and other mnemonics with Pixorize.ACE Inhibitors (ACEIs) are medications that end in -pril, including lisinopril, ca... , Class IB antiarrhythmics, represented by agents like lidocaine, mexiletine, and to some extent, phenytoin, possess a low affinity for sodium channels. This results in only a modest reduction in the phase 0 upstroke speed. , Summary. Antiarrhythmic drugs are used to prevent recurrent. arrhythmias. and restore sinus rhythm in patients with. cardiac arrhythmias. These drugs are classified based on their electrophysiological effect on the. myocardium. Antiarrhythmic drugs do not improve the survival of patients with non-life-threatening., Review. Pharmacology. Mechanisms of Action. Phenytoin is an AED that works by binding and stabilizing the inactivated state of sodium channels and blocks the high-frequency firing of neurons and spread of seizure activity [].]. Phenytoin is highly protein-bound and is metabolized by cytochrome P450 (CYP) enzymes, in addition to …, Phenytoin. Phenytoin (FEN i toyn) has been approved by the FDA to treat tonic-clonic (grand mal) psychomotor (temporal lobe) seizures, as well as for the prevention and treatment of seizures occurring during or following neurosurgery. Your epilepsy treatment should always be discussed with your healthcare provider before use., Phenytoin suspension is very viscous and hyperosmolartherefore dilution with equal amounts of water is recommended. Phenytoin interacts with feed therefore feed must be stopped for 2 hours before and after giving phenytoin via enteral feeding tubes. Flush the feeding tubes with saline before and after phenytoin administration., Santa's client lists get bigger every year and managing those lists gets more complicated every Christmas. Your email address will not be published. Required fields are marked * Co..., Bu-phine: buprenorphine, nalbuphine, and butorphanol. Think of the Blue Fin grill with the partial massage (the foot massage) 21. Q. The two mu-opioid antagonists are ____________. A. naloxone (no lax zone –don’t relax) and naltrexone (no tricks zone) Study Sketchy Pharm: Opiates, Naloxone, Naltrexone flashcards from Billy Tran&#39;s class ..., Phenytoin is a long-standing, anti-seizure drug widely used in clinical practice. It has also been evaluated in the context of many other illnesses in addition to its original epilepsy indication. The narrow therapeutic index of phenytoin and its ubiquitous daily use pose a high risk of poisoning. This review article focuses on the chemistry ... , Phenytoin is indicated to treat grand mal seizures, complex partial seizures, and to prevent and treat seizures during or following neurosurgery. 14 Injectable phenytoin and …, Structure and nomenclature. The typical structure of a tertiary SN involves a central sulfur atom, with two doubly bonded oxygens, that is also bonded to a nitrogen atom (existing as a substituted amine) and an aniline group (Fig. (Fig.1a) 1a) in which R 1 /R 2 may also be hydrogen, alkyl, aryl, or hetero aryl groups. An alternative means of …, phenytoin: [noun] a crystalline anticonvulsant compound C15H12N2O2 used in the form of its sodium salt in the treatment of epilepsy &mdash; called also#R##N# diphenylhydantoin., Study with Quizlet and memorize flashcards containing terms like Phenytoin, High potency FGAs, Low potency FGAs and more., 1. Q. Considering their mechanism, what is unique about the aminoglycosides? A. They are bactericidal, even though they inhibit bacterial ribosomes. 2. Q. How do aminoglycosides …, Sketchy Preclinical Checklist microbiology pharmacology pathology biochemistry 2021 sketchy micro bacteria chapter gram positive cocci staphylococcus aureus ... lamotrigine, levetiracetam 4 - Carbamazepine, phenytoin, gabapentin, tiagabine, vigabatrin 4 – Ethosuximide. SKETCHY PHARM. CHAPTER 5 ANTIFUNGALS 5 - Amphotericin, …, As phenytoin or phenytoin Na: Initially, 3-4 mg/kg daily or 150-300 mg daily given as a single dose or in divided doses, may gradually increase up to 600 mg daily at a minimum interval of 7-10 days if necessary. Maintenance: 200-500 mg daily as a single dose or in divided doses. Dosage must be individualised and adjusted according to clinical ...