ALLI vs FASTIN
Independent side-by-side comparison.
Rating
Pharmacy pays
Type
Active ingredient
Manufacturer
Dosage forms
Drug class
Boxed warning
Treats
Get allihigher-rated option
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Licensed online providers — consult & get prescribed if eligible.
Where to buy
Buy over-the-counter from trusted retailers.
Frequently asked questions
Which is better-rated, Alli or Fastin?
Alli and Fastin are tied at 3.6 out of 5 by our independent rating.
Which is cheaper, Alli or Fastin?
Fastin costs pharmacies less to acquire — about $2.58 vs $207.15 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 Alli and Fastin?
Alli contains Orlistat, while Fastin contains Phentermine 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.