Ranitidine (Page 3 of 3)
OVERDOSAGE
There has been limited experience with overdosage. Reported acute ingestions of up to 18 g orally have been associated with transient adverse effects similar to those encountered in normal clinical experience (see ADVERSE REACTIONS). In addition, abnormalities of gait and hypotension have been reported.
When overdosage occurs, the usual measures to remove unabsorbed material from the gastrointestinal tract, clinical monitoring, and supportive therapy should be employed.
Studies in dogs receiving dosages of ranitidine in excess of 225 mg/kg per day have shown muscular tremors, vomiting, and rapid respiration. Single oral doses of 1,000 mg/kg in mice and rats were not lethal. Intravenous LD50 values in mice and rats were 77 and 83 mg/kg, respectively.
DOSAGE AND ADMINISTRATION
Active Duodenal Ulcer
The current recommended adult oral dosage of Ranitidine Syrup (Ranitidine Oral Solution USP) for duodenal ulcer is 150 mg or 10 mL of oral solution (2 teaspoonfuls of oral solution equivalent to 150 mg of ranitidine) twice daily. An alternative dosage of 300 mg or 20 mL of oral solution (4 teaspoonfuls of oral solution equivalent to 300 mg of ranitidine) once daily after the evening meal or at bedtime can be used for patients in whom dosing convenience is important. The advantages of one treatment regimen compared to the other in a particular patient population have yet to be demonstrated (seeCLINICAL TRIALS: ACTIVE DUODENAL ULCER). Smaller doses have been shown to be equally effective in inhibiting gastric acid secretion in US studies, and several foreign trials have shown that 100 mg twice daily is as effective as the 150 mg dose.
Antacid should be given as needed for relief of pain (see CLINICAL PHARMACOLOGY: PHARMACOKINETICS).
Maintenance of Healing of Duodenal Ulcers
The current recommended adult oral dosage is 150 mg or 10 mL of oral solution (2 teaspoonfuls of oral solution equivalent to 150 mg of ranitidine) at bedtime.
Pathological Hypersecretory Conditions (such as Zollinger-Ellison syndrome)
The current recommended adult oral dosage is 150 mg or 10 mL of oral solution (2 teaspoonfuls of oral solution equivalent to 150 mg of ranitidine) twice a day. In some patients it may be necessary to administer ranitidine 150 mg doses more frequently. Dosages should be adjusted to individual patient needs, and should continue as long as clinically indicated. Dosages up to 6 g/day have been employed in patients with severe disease.
Benign Gastric Ulcer
The current recommended adult oral dosage is 150 mg or 10 mL of oral solution (2 teaspoonfuls of oral solution equivalent to 150 mg of ranitidine) twice a day.
Maintenance of Healing of Gastric Ulcers
The current recommended adult oral dosage is 150 mg or 10 mL of oral solution (2 teaspoonfuls of oral solution equivalent to 150 mg of ranitidine) at bedtime.
GERD
The current recommended adult oral dosage is 150 mg or 10 mL of oral solution (2 teaspoonfuls of oral solution equivalent to 150 mg of ranitidine) twice a day.
Erosive Esophagitis
The current recommended adult oral dosage is 150 mg or 10 mL of oral solution (2 teaspoonfuls of oral solution equivalent to 150 mg of ranitidine) four times a day.
Maintenance of Healing of Erosive Esophagitis
The current recommended adult oral dosage is 150 mg or 10 mL of oral solution (2 teaspoonfuls of oral solution equivalent to 150 mg of ranitidine) twice a day.
Pediatric Use
The safety and effectiveness of ranitidine have been established in the age-group of 1 month to 16 years. There is insufficient information about the pharmacokinetics of ranitidine in neonatal patients (less than 1 month of age) to make dosing recommendations.
The following 3 subsections provide dosing information for each of the pediatric indications.
Treatment of Duodenal and Gastric Ulcers
The recommended oral dose for the treatment of active duodenal and gastric ulcers is 2 to 4 mg/kg twice daily to a maximum of 300 mg/day. This recommendation is derived from adult clinical studies and pharmacokinetic data in pediatric patients.
Maintenance of Healing of Duodenal and Gastric Ulcers
The recommended oral dose for the maintenance of healing of duodenal and gastric ulcers is 2 to 4 mg/kg once daily to a maximum of 150 mg/day. This recommendation is derived from adult clinical studies and pharmacokinetic data in pediatric patients.
Treatment of GERD and Erosive Esophagitis
Although limited data exist for these conditions in pediatric patients, published literature supports a dosage of 5 to 10 mg/kg per day, usually given as two divided doses.
Dosage Adjustment for Patients With Impaired Renal Function
On the basis of experience with a group of subjects with severely impaired renal function treated with ranitidine, the recommended dosage in patients with a creatinine clearance <50 mL/min is 150 mg or 10 mL of oral solution (2 teaspoonfuls of oral solution equivalent to 150 mg of ranitidine) every 24 hours. Should the patient’s condition require, the frequency of dosing may be increased to every 12 hours or even further with caution. Hemodialysis reduces the level of circulating ranitidine. Ideally, the dosing schedule should be adjusted so that the timing of a scheduled dose coincides with the end of hemodialysis.
Elderly patients are more likely to have decreased renal function, therefore caution should be exercised in dose selection, and it may be useful to monitor renal function (see CLINICAL PHARMACOLOGY: PHARMACOKINETICS: GERIATRICS and PRECAUTIONS: GERIATRIC USE).
HOW SUPPLIED
Ranitidine Syrup (Ranitidine Oral Solution USP), a clear, pale yellow, spearmint-flavored liquid, contains 16.8 mg of ranitidine hydrochloride equivalent to 15 mg of ranitidine per 1 mL of oral solution (75 mg/5 mL) in bottles of 16 fl oz (NDC 0121-0727-16) and 10 mL unit dose cups, packaged in trays of 10 (NDC 0121-4727-10).
Store at 20° to 25°C (68° to 77°F) (See USP Controlled Room Temperature).
Do not freeze.
Dispense in tight, light-resistant containers as defined in the USP/NF.
SPL UNCLASSIFIED SECTION
MULTISTIX® is a registered trademark of Bayer Healthcare LLC.
Pharmaceutical
Associates, Inc.
Greenville, SC 29605
www.paipharma.com
R11/10
PRINCIPAL DISPLAY PANEL
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| Labeler — RedPharm Drug, Inc. (828374897) |
| Establishment | |||
| Name | Address | ID/FEI | Operations |
| RedPharm Drug, Inc. | 828374897 | repack (67296-1586) | |
Revised: 01/2022 RedPharm Drug, Inc.
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