PERPHENAZINE vs PROMETHEGAN
Independent side-by-side comparison.
Possible drug interaction. PERPHENAZINE and PROMETHEGAN are different prescription medicines. Combining or switching between them can cause interactions — talk to a pharmacist or prescriber before making changes. This page is not medical advice.
Rating
Pharmacy pays
Type
Active ingredient
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Drug class
Boxed warning
Half-life
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Frequently asked questions
Which is better-rated, Perphenazine or Promethegan?
By our independent rating, Promethegan scores higher — 3.5 vs 3.4 out of 5 for Perphenazine. Ratings are based on FDA regulatory (recall-safety) data.
Which is cheaper, Perphenazine or Promethegan?
Promethegan costs pharmacies less to acquire — about $1.53 vs $5.68 for a 30-count supply, per the CMS NADAC survey. That gap is in the pharmacy's cost of goods, not necessarily in what you pay: your price is set afterwards by your insurer and the pharmacy.
What is the difference between Perphenazine and Promethegan?
Perphenazine contains Perphenazine, while Promethegan contains Promethazine Hydrochloride — they have different active ingredients.
Ratings are based on FDA regulatory (recall-safety) data. This comparison is for general reference only — not medical advice. Always consult a licensed professional before choosing or switching a medication.