We collected information about Phenergan Every 4 Hours for you. Follow the liks to find out everything about Phenergan Every 4 Hours.
https://www.drugs.com/dosage/promethazine.html
-Parenteral: 6.25 to 12.5 mg IM or IV every 4 hours a day Treatment and prevention:-Oral and Rectal: 12.5 to 25 mg orally or rectally 2 times a day Comments:-The initial dose should be given 30 to 60 minutes before anticipated travel, and may be repeated in 8 to 12 hours as needed.
https://www.accessdata.fda.gov/drugsatfda_docs/label/2004/07935s030lbl.pdf
Promethazine is well absorbed from the gastrointestinal tract. Clinical effects are apparent within 20 minutes after oral administration and generally last four to six hours, although they may...
https://www.drugs.com/mtm/phenergan-injection.html
Promethazine injection is usually given every 2 to 4 hours depending on the condition it is used for. Tell your caregivers if you feel any burning, pain, or swelling around the IV needle when promethazine is injected. Promethazine injection is usually given for only a short time until no longer needed or until you can take promethazine by mouth.
https://www.drugs.com/dosage/phenergan.html
The average effective dose of Phenergan for the active therapy of nausea and vomiting in children or adults is 25 mg. When oral medication cannot be tolerated, the dose should be given parenterally (cf. Phenergan Injection) or by rectal suppository. 12.5- to 25-mg doses may be repeated, as necessary, at 4- to 6-hour intervals.
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