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Antivert vs. Phenergan

Are Antivert and Phenergan the Same Thing?

Antivert (meclizine HCl) and Phenergan (promethazine HCI) are antihistamines used to prevent or treat nausea, vomiting, and dizziness caused by motion sickness.

Antivert is also used to reduce lightheadedness, dizziness, and loss of balance (vertigo) caused by diseases that affect the inner ear.

Phenergan is also used to treat allergic symptoms such as rash, itching, and runny nose.

The brand name Phenergan is discontinued in the U.S. Generic versions may be available.

Side effects of Antivert and Phenergan that are similar include blurred vision, dry mouth, constipation, dizziness, or drowsiness.

Side effects of Antivert that are different from Phenergan include headache, vomiting, or tiredness.

Side effects of Phenergan that are different from Antivert include anxiety, stuffy nose, ringing in your ears, weight gain, swelling in your hands or feet, impotence, or trouble having an orgasm.

What Are Possible Side Effects of Antivert?

Common side effects of Antivert include:

  • blurred vision,
  • dry mouth,
  • constipation,
  • dizziness,
  • drowsiness,
  • headache,
  • vomiting, or
  • tiredness.

This is not a complete list of side effects, and others may occur.

What Are Possible Side Effects of Phenergan?

Common side effects of Phenergan include:

  • drowsiness,
  • dizziness,
  • anxiety,
  • blurred vision,
  • dry mouth,
  • stuffy nose,
  • ringing in your ears,
  • weight gain,
  • swelling in your hands or feet,
  • impotence,
  • trouble having an orgasm, or
  • constipation.

What Is Antivert?

Antivert (meclizine HCl) is an antihistamine used to prevent or treat nausea, vomiting, and dizziness caused by motion sickness and may be used to reduce lightheadedness, dizziness, and loss of balance (vertigo) caused by diseases that affect the inner ear. Antivert is available as a generic drug, and should be taken by mouth with or without food, or as directed by your doctor.

What Is Phenergan?

Phenergan (promethazine HCI) is an antihistamine used to treat nausea and vomiting related to certain conditions (e.g., motion sickness, before/after surgery). Phenergan is also used to treat allergic symptoms such as rash, itching, and runny nose. The brand name Phenergan is discontinued in the U.S. Phenergan is available as a generic drug.

SLIDESHOW

Tinnitus: Why Are My Ears Ringing? See Slideshow

What Drugs Interact With Antivert?

Antivert may interact with alcohol, other drugs that make you sleepy or slow your breathing (such as sleeping pills, narcotics, muscle relaxers, or medicines for anxiety, depression, or seizures), cinacalcet, quinidine, terbinafine, or antidepressants. Tell your doctor all medications and supplements you use. Antivert (meclizine HCl) should be used during pregnancy only if clearly necessary. It is unknown if Antivert passes into breast milk or if it could harm a nursing baby. Consult your doctor before breastfeeding.

What Drugs Interact With Phenergan?

Phenergan may interact with cold or allergy medicine, sedatives, narcotics, sleeping pills, muscle relaxers, seizure medications, antidepressants, anxiety medicines, lithium, atropine, belladonna, benztropine, dimenhydrinate, methscopolamine, scopolamine, blood pressure medications, blood thinners, bronchodilators, bladder or urinary medications, MAO inhibitors, medicines to treat Parkinson's disease, restless leg syndrome medications, medicines to treat pituitary gland tumor, or medicines to treat stomach ulcer or irritable bowel syndrome. Tell your doctor all medications and supplements you use. Phenergan Tablets and Suppositories should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus. It is not known whether Phenergan is excreted in human milk. Because of the potential for serious adverse reactions in nursing infants from Phenergan Tablets and Suppositories, a decision should be made whether to discontinue nursing or to discontinue the drug, taking into account the importance of the drug to the mother.

How Should Antivert Be Taken?

For the control of vertigo associated with diseases affecting the vestibular system, the recommended dose of Antivert is 25 to 100 mg daily, in divided dosage, depending upon clinical response. The initial dose of 25 to 50 mg of Antivert should be taken one hour prior to embarkation for protection against motion sickness. Thereafter, the dose may be repeated every 24 hours for the duration of the journey.

How Should Phenergan Be Taken?

The dose of Phenergan to treat allergies is 25 mg taken before retiring. The adult dose of Phenergan to treat motion sickness is 25 mg taken twice daily. The dose of Phenergan for the active therapy of nausea and vomiting in children or adults is 25 mg.

QUESTION

What is vertigo? See Answer
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References
SOURCE:

DailyMed. Meclizine Product Information.

https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=9b50cae4-e10d-40d1-bad2-d8b53aee74fd

Dailymed. Phenergan Product Information.

https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=481866da-a712-48a5-853f-8e84aacaab6d

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