Dilantin - 25 mg
PHENYTOIN
Pfizer Limited
Phenytoin is available as extended-release (long-acting) capsule, a chewable tablet, and a suspension (liquid) orally. The chewable tablet and suspension are usually taken two or three times a day. Phenytoin should be taken with food. When administering to patients on nasogastric or other enteral feeds, do not administer feeds 2 hr before or after a dose. Be consistent throughout therapy in relation to feed times. Do not switch dosage forms/brands with out prior consideration.
Store protected from moisture at temperature not exceeding 30°C.
Porphyria Avoid parenteral use in sinus bradycardia Sino-atrial block, second- and third-degree heart block Stokes-Adams syndrome Pregnancy
Rabies : Rabies is a viral disease that causes acute inflammation of the brain in humans and other warm-blooded animals. Early symptoms may include: fever and tingling at the site of exposure. This is then followed by either violent movements, uncontrolled excitement, and fear of water or an inability to move parts of the body and confusion followed by loss of consciousness. In both cases once symptoms appears it nearly always results in death. The disease is spread to humans from another animal, commonly by a bite or scratch. Infected saliva that comes into contact with any mucous membrane is also a risk. Globally most cases are the result of a dog bite, with this being the cause in more than 90% of cases in countries where dogs commonly have rabies. In the Americas and Australia, less than 5% of cases are from dogs, with bats being the most common cause. Rodents are very rarely infected. The rabies virus travels to the brain by following the peripheral nerves. The disease can also be diagnosed after the start of symptoms. Centers for Disease Control and Prevention recommends patients receive one dose of human rabies immunoglobulin (HRIG) and four doses of rabies vaccine over a 14-day period. The immunoglobulin dose should not exceed 20 units per kilogram body weight.The first dose of rabies vaccine is given as soon as possible after exposure, with additional doses on days three, seven and 14 after the first. Patients who have previously received pre-exposure vaccination do not receive the immunoglobulin, only the postexposure vaccinations on days 0 and 2.
Effects with other sedative drugs or ethanol may be potentiated. Enhances toxic effects of paracetamol, lithium. Increased risk of osteomalacia with acetazolamide. Decreased serum levels/effects with acyclovir, antineoplastics, benzodiazeines, ciprofloxacin, CYP2C9 inducers (e.g. carbamazepine), CYP2C19 inducers (e.g. rifampin), folic acid, vigabatrin. Increased serum concentrations with allopurinol, capecitabine, cimetidine, CYP2C9 inhibitors (e.g. fluconazole), CYP2C19 inhibitors (e.g. delavirdine), disulfiram, methylphenidate, metronidazole, omeprazole, SSRI, trazodone, trimethoprim. Increases metabolism of antiarrhythmics, anticonvulsants, antipsychotics, beta-blockers, calcium channel blockers, chloramphenicol, corticosteroids, doxycycline, oestrogens, HMG-CoA reductase inhibitors, methadone, theophylline, TCAs. Decreases levels/effects of clozapine, ciclosporin, tacrolimus, CYP2B6 substrates (e.g. bupropion, selegiline), CYP2C8 substrates (e.g. amiodarone).
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It is any effect of a drug, chemical, or other medicine that is in addition to its intended effect, especially an effect that is harmful or unpleasant.