ONA-MAST vs PHENAZINE
Independent side-by-side comparison.
Possible drug interaction. ONA-MAST and PHENAZINE 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.
Frequently asked questions
Which is cheaper, Ona-Mast or Phenazine?
Ona-Mast costs pharmacies less to acquire — about $2.54 vs $3.86 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 Ona-Mast and Phenazine?
Ona-Mast contains Phentermine Hydrochloride, while Phenazine contains Phendimetrazine Tartrate — 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.