- 10 Common Allergy Triggers Slideshow Pictures
- Take the Quiz on Allergies
- Nasal Allergy Relief Products Slideshow
- What is Periactin, and how does it work (mechanism of action)?
- Is it available as a generic drug?
- Do I need a prescription for this drug?
- What are the uses for Periactin?
- What are the adverse events and side effect of Periactin?
- What is the dosage for Periactin, and how should I take it?
- Which drugs or supplements interact with this medication?
- Is this drug safe to use during pregnancy or while breastfeeding?
- What else should I know about this medication?
What are the adverse events and side effect of Periactin?
Side effects of include:
- Fast heart beat
- High or low blood pressure
- Blurred vision
- Double Vision
- Ringing in the ears
- Urinary retention
- Nasal stuffiness
Other side effects that have been reported include:
- Early menses
- Dryness of mouth, nose, and throat
- Facial dyskinesia
- Tightness of chest
Antihistamines may reduce mental alertness, however, they may occasionally produce excitation in children.
Patients should be warned about driving a car or operating machinery and participating in other activities that require mental alertness and motor coordination.
Antihistamines may add to the sedative effects of alcohol, hypnotics, sedatives, tranquilizers, and anti-anxiety drugs.
What is the dosage for Periactin, and how should I take it?
- The recommended starting dose for adults is 4 mg every 8 hours.
- The dose range is 4 mg to 20 mg daily.
- Some patients may require up to 32 mg day. The dose should not exceed 0.5 mg/kg daily.
- The dosage for children 7 to 14 years of age should receive 4 mg 3 times daily. The maximum dose is 16 mg daily.
- Children 2 to 6 years old are treated with 2 mg three times daily and the maximum dose is 12 mg a day.
- The total daily dose may also be calculated by weight (0.25 mg/kg/day) or surface area (8 mg/m2).
Quick GuideBad Bugs: Identify Bug Bites From Mosquitos, Spiders and More
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
Need help identifying pills and medications?
Use the pill identifier tool on RxList.