Generic Zofran is used for preventing nausea and vomiting due to cancer chemotherapy or surgery. It may also be used for other conditions.
Other names for this medication:
Also known as: Ondansetron.
Generic Zofran is used for preventing nausea and vomiting due to cancer chemotherapy or surgery. It may also be used for other conditions.
Generic Zofran is a serotonin 5-HT3 receptor blocker. It works by blocking a chemical thought to be a cause of nausea and vomiting in certain situations (e.g., chemotherapy).
Zofran is also known as Ondansetron, Vomiof, Danzetron, Ondaz.
Generic name of Generic Zofran is Ondansetron.
Brand name of Generic Zofran is Zofran.
Take each dose with a full glass of water.
Take Generic Zofran with food or an antacid to lessen stomach discomfort.
If you want to achieve most effective results do not stop taking Generic Zofran suddenly.
If you overdose Generic Zofran and you don't feel good you should visit your doctor or health care provider immediately.
Store at temperature between 2 and 30 degrees C (36 and 86 degrees F) away from moisture and heat. Throw away any unused medicine after the expiration date. Keep out of the reach of children.
The most common side effects associated with Zofran are:
Side effect occurrence does not only depend on medication you are taking, but also on your overall health and other factors.
Do not take Generic Zofran if you are allergic to Generic Zofran components.
Be careful with Generic Zofran if you're pregnant or you plan to have a baby, or you are a nursing mother.
Generic Zofran should be used with extreme caution in children younger than 4 months old. Safety and effectiveness in these children have not been confirmed.
Do not stop taking Generic Zofran suddenly.
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Prochlorperazine and ondansetron appear to be equally effective at treating vomiting in the emergency department.
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The efficacy and reliability of prophylactic antiemetic therapy with low dose propofol, droperidol, metoclopramide, and ondansetron were evaluated in a randomized, double-blind, and prospective design.
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In this double-blind, randomized, placebo-controlled trial in a children's hospital ED, patients receiving IV ketamine (1 mg/kg) for ED procedures were randomized to receive either IV ondansetron (0.15 mg/kg; maximum 4 mg) or identical placebo. We recorded whether vomiting occurred in the ED postsedation or up to 12 hours after discharge with telephone follow-up and compared ED length of stay and parental satisfaction.
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Two hundred and fifty patients of ASA physical status I and II, scheduled for laparoscopic cholecystectomy were randomly assigned into two equal groups to receive 600 mg gabapentin or matching placebo two hours before surgery. Standard anaesthesia technique was used. Fentanyl was used as rescue postoperative analgesic. Ondansetron 4 mg was used intravenously as rescue medication for emesis. The total number of patients who had nausea or vomiting, and its severity and total fentanyl consumption in the first 24 hours were recorded.
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Ondansetron 4 mg or dexamethasone 4 mg are equally effective in the prevention of postoperative nausea and vomiting following breast surgery. Other factors being similar, the difference in cost between these drugs would favor the use of dexamethasone instead of ondansetron when monotherapy against PONV is used.
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In a randomized, single dose, fasting, two-period, crossover study design with a 1-week washout period, each subject received an 8-mg ondansetron tablet. Serum samples were collected over a 24-hour period after administration. Subsequently serum concentrations of ondansetron were analyzed by using a validated HPLC-UV method. Pharmacokinetic parameters were determined by using non-compartmental analysis.
1. This paper describes the pharmacology of the novel 5-hydroxytryptamine3 (5-HT3) receptor antagonist GR38032F. 2. On the isolated vagus nerve and superior cervical ganglion of the rat, R,S-GR38032F behaved as a reversible competitive antagonist of 5-HT-induced depolarization with pKB values of 8.61 +/- 0.08 (n = 19) and 8.13 +/- 0.07 (n = 16), respectively. The resolved R- and S-isomers of GR38032F were approximately equipotent as 5-HT antagonists on the rat vagus nerve: the pKB values were 8.95 +/- 0.05 (n = 16) and 8.63 +/- 0.08 (n = 17), respectively. R,S-GR38032F was also an effective antagonist of 5-HT on the rabbit isolated vagus nerve: in this case the pKB value was 9.40 +/- 0.14 (n = 4). 3. On the rabbit isolated heart, low concentrations of R,S-GR38032F (3 X 10(-11)-1 X 10(-9) M) antagonized the positive chronotropic effect of 5-HT and 2-methyl-5-hydroxytryptamine (2-methyl-5-HT). However, the effects of the compound did not appear consistent with simple reversible competition. 4. On the longitudinal smooth muscle of the guinea-pig ileum, R,S-GR38032F caused concentration-dependent parallel rightward displacement of the 2-methyl-5-HT concentration-contraction response curve; in contrast, a portion of the response to 5-HT appeared resistant to R,S-GR38032F. pKB values estimated from the effects of the compound against 2-methyl-5-HT or the inhibitable portion of the response to 5-HT were 7.31 +/- 0.06 (n = 8) and 7.33 +/- 0.13 (n = 8), respectively. Against 2-methyl-5-HT, R-GR38032F seemed more potent (pKB 7.20 +/- 0.10; n = 6) than S-GR38032F (pKB 6.30 +/- 0.05; n = 6). 5. R,S-GR38032F is highly selective for 5-HT3 receptors, and at concentrations of 3 X 10(-6)-3 X 10(-5) M, had negligible agonist or antagonist activity on other 5-HT or non-5-HT receptor-containing tissues on which it was tested. 6. The potency and duration of action of R,S-GR38032F in blocking 5-HT3 receptors in vivo were assessed by measuring its ability to antagonize the bradycardic response to 5-HT or 2-methyl-5-HT administered intravenously (i.v.) to anaesthetized animals. For i.v. administration to the rat, the ED50 for R,S-GR38032F against 2-methyl-5-HT (100pgkg-1) was 0.4 (95% confidence limits 0.18- 0.87) ygkg-1 (n = 10); the corresponding value for oral administration to this species was 7.0 (3.0- 22.0)pgkg-' (n = 8-10 per dose level). R,S-GR38032F was similarly effective in the anaesthetized cat. 7. The present results are discussed with reference to the postulated existence of subtypes of the 5-HT3 receptor.
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To evaluate safety and efficacy of olanzapine for breakthrough emesis in addition to standard antiemetic regimen in cancer patients receiving highly emetogenic chemotherapy.
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Fundamental to complex systems are interconnected processes involved in providing high-quality patient care. A case study and a root cause analysis (RCA) illustrate a patient safety effort with unintended consequences.
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The antiemetic efficacy of ondansetron and dexamethasone (Ondex) was randomly compared to that of high-dose metoclopramide, dexamethasone, and orphenadrine (Control) in the prevention of emesis induced by cyclophosphamide-doxorubicin chemotherapy in 64 chemotherapy-naive breast cancer patients. For the control of acute emesis (day 1), patients were randomized to receive either ondasetron 8 mg p.o. 1 hour prior to chemotherapy (CT) and repeated after 6 and 12 hours plus dexamethasone 20 mg i.v. 40 minutes prior to CT (Ondex) or dexamethasone 20 mg i.v. 40 minutes prior to CT, orphenadrine 40 mg i.m. 35 minutes prior to CT and metoclopramide 3 mg/kg i.v. 30 minutes prior to CT and repeated after 90 minutes followed by 40 mg p.o. every 3 hours for 4 times (Control). To control delayed emesis, patients on Ondex received ondansetron 8 mg PO t.i.d. days 2 and 3 and patients in the Control arm received metoclopramide 0.5 mg/kg p.o. q.i.d. and dexamethasone 8 mg i.m. b.i.d. days 2 and 3. Complete and major control of acute emesis was observed in 74%/94% and 44%/67% of patients treated with Ondex and Control, respectively (p < .01/p < .005). Acute nausea was absent in 38% and 34% of patients treated with Ondex and Control, respectively (p = NS). Complete and major control of delayed emesis (days 2-5) was observed in 65%/91% versus 44%/66% of patients in the Ondex and Control arms, respectively (p = NS/p < .01). In patients receiving 6 courses of FEC/FAC, control of acute emesis was significantly superior with Ondex at all treatment courses.
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Ingestion of diatrizoate meglumine before abdominal computed tomography (CT) is time consuming. We hypothesized that pretreatment with metoclopramide or ondansetron would result in faster ingestion of diatrizoate meglumine than placebo.
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Previous studies on Combretum leprosum, a tree growing in the Northeastern states of Brazil, have shown antinociceptive effects of the ethanol extract of its leaves and bark, but studies examining its constituents are rare. The objective of this study was to evaluate the antinociceptive effect of the hydroalcoholic fraction (HF) of one of its constituents, the flavonoid (-) epicatechin (EPI), administered orally to mice (20-30 g) in models of chemical nociception, and the possible mechanisms involved. Different doses of HF (62.5 to 500 mg/kg) and EPI (12.5 to 50 mg/kg) were evaluated in models of abdominal writhing, glutamate, capsaicin, and formalin in animals pretreated with different antagonists: naloxone, ondansetron, yohimbine, ketanserin, pindolol, atropine, and caffeine in the abdominal writhing test. To determine the role of nitric oxide, the animals were pretreated with L-arginine (600 mg/kg, ip) in the glutamate test. The HF was effective (P < 0.05) in all protocols at different doses and EPI was effective in the abdominal writhing, capsaicin and glutamate tests (P < 0.05) at doses of 25 and 50 mg/kg. However, in the formalin test it was only effective in the second phase at a dose of 25 mg/kg. The antinociceptive effect of HF was inhibited when HF was associated with yohimbine (0.15 mg/kg), ketanserine (0.03 mg/kg), and L-arginine (600 mg/kg), but not with the other antagonists. HF and EPI were effective in models of chemical nociception, with the suggested participation of the adrenergic, serotonergic and nitrergic systems in the antinociceptive effect of HF.
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The overall incidence of vomiting was 23%; in group D and 5%; in group OD (P < 0.001). Each episode of vomiting increased the in-hospital length of stay by 29 min (P < 0.001).
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To compare risk model-guided (RMG) antiemetic prophylaxis with physician's choice (PC) in patients receiving chemotherapy for early-stage breast cancer.
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Prophylactic ondansetron is more effective than metoclopramide or placebo for the prevention of vomiting after tonsillectomy or adenotonsillectomy. Patients who do not vomit postoperatively have shorter LOS.
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We report a case of a teenage boy with cyclical vomiting syndrome (CVS) who was referred to the anesthesia-run postoperative pain service for symptom management. His symptoms were uncontrolled by oral pizotifen prophylaxis and acute therapy with intravenous (IV) hydration and ondansetron. A continuous low dose IV midazolam infusion was added to his treatment regimen (as is instituted for recalcitrant postoperative nausea and vomiting) with benefit, but not total symptom resolution. Recent literature review suggested links between migraine, CVS and adrenergic autonomic dysfunction. Consequently, IV clonidine was administered, in addition, with recovery. This combination was reinstituted successfully on subsequent admissions and emergency department presentations with shortened episode durations from 4-5 days to 16-48 h. It is uncertain if clonidine's sympatholytic effects were significantly beneficial or if associated sedation or natural resolution were contributors. Many agents have been used in CVS therapy but no trials have been done. Neither midazolam nor clonidine has been reported previously as used in the treatment of CVS. The apparent success of this combination raises possibilities both for future trials and research into the pathogenesis of CVS.
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Primary: No reports describing an arrhythmia associated with single oral ondansetron dose administration were identified. Secondary: Sixty unique reports were identified. Route of administration was predominantly intravenous (80%). A significant medical history (67%) or concomitant use of a QT-prolonging medication (67%) was identified in 83% of reports. Approximately one third occurred in patients receiving chemotherapeutic agents, many of which are known to prolong the QT interval. An additional third involved administration to prevent postoperative vomiting.
48 trials involving 12,078 patients (10,390 adults and 1688 children) met the selection criteria. No evidence was found that the drug became more effective at doses larger than 4 mg. The dose of 8 mg was not statistically demonstrated to be superior (p = 0.558), while that of 1 mg was barely effective. The meta-analysis indicated that when the incidence of vomiting is elevated (e.g., the combined average of the placebo groups of 48%), on the statistical (i.e., hypothetical) grounds of six patients being treated with 4 mg of ondansetron, one will not vomit due to the treatment and, of the rest, two patients would have vomited despite the treatment and three patients would not have vomited anyway. The overall incidence of headache was 7.05% in ondansetron groups versus 6.16% in placebo groups.
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Forty chemotherapy-naive patients receiving high-dose cisplatin were included in a pilot study of a combination of ondansetron plus metoclopramide as antiemetic therapy. Patients received ondansetron 16 mg plus metoclopramide 0.5 mg/kg in 250 cm3 of normal saline i.v. 15 min before cisplatin administration on day 1; then ondansetron 8 mg was given orally b.i.d. and metoclopramide 0.5 mg/kg was given intramuscularly t.i.d. for 4 days. This combination was given to all patients receiving the first cycle of chemotherapy. At the second cycle of chemotherapy all patients received the same antiemetic treatment as above plus methylprednisolone 125 mg i.v. on day 1 and the intramuscularly once a day for 4 days. There were 20 females and 20 males with a mean performance status of 1 (range 0-2) and a mean age of 58 years (range 36-68). Ten patients had ovarian carcinoma, eight patients had uterine adenocarcinoma and 22 and non-small cell lung carcinoma. The mean cisplatin dose was 96 mg/m2. All patients denied significant alcohol consumption. At cycle 1, complete protection against acute emesis was achieved in 22 patients (55%), major protection in 12 cases (30%), minor protection in four patients (10%) and failure in two cases (5%). On the other hand, the efficacy of this combination on delayed vomiting was not striking. For delayed vomiting, complete protection was observed in nine patients (23%), major protection in 13 cases (33%), minor protection in 10 patients (25%) and failure in eight cases (20%). At cycle 2, patients also received methylprednisolone showing complete protection from vomiting in 19 cases (47%) and major protection on 12 cases (30%). Results achieved with ondansetron plus metoclopramide are in the range reported for ondansetron alone in the medical literature. Although this study was not prospectively carried out in a randomized fashion, the results are not suggestive of a possible positive effect of metoclopramide addition to ondansetron. On the other hand, these results stress the role that corticosteroids may play in the control of delayed emesis. Toxicity was predictable and the frequency of side-effects was in the range reported in other studies with ondansetron.
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Several medication strategies can be considered as promising alternatives or augmenting to antidepressant or benzodiazepine therapy in GAD.
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Women with significant NVP should be identified so that they can be safely and effectively treated.
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