Comparative Pharmacology
Head-to-head clinical analysis: ADPHEN versus OBY TRIM.
Peer-Reviewed Evidence
Head-to-head clinical analysis: ADPHEN versus OBY TRIM.
ADPHEN vs OBY-TRIM
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Adphen is a combination of phentermine hydrochloride and diethylpropion hydrochloride. Phentermine is a sympathomimetic amine that acts as an appetite suppressant by stimulating the hypothalamus to release norepinephrine, thereby reducing food intake. Diethylpropion also has sympathomimetic activity, though its exact mechanism is not fully understood.
OBY-TRIM is a combination of phentermine, a sympathomimetic amine anorectic that stimulates the hypothalamus to release norepinephrine, suppressing appetite, and a diuretic (often a thiazide) to reduce fluid retention.
5 mg orally once daily, titrated to a maximum of 10 mg once daily as tolerated.
Oral: 1 capsule (phentermine 18.75 mg / chlorpheniramine 6.25 mg) twice daily, 30 minutes before meals.
None Documented
None Documented
Terminal elimination half-life is 10-15 hours in adults with normal renal function; prolonged to 20-30 hours in severe renal impairment (CrCl <30 mL/min).
Terminal half-life is approximately 20–30 hours in adults with normal renal function. This allows for once-daily dosing in most patients.
Primarily renal (70-90% as unchanged drug) with minor biliary (10-15% as metabolites). Fecal elimination is negligible (<5%).
Primarily renal (90% as unchanged drug and metabolites), with about 10% biliary/fecal. In an acidic urine, elimination half-life increases.
Category C
Category C
Anorexiant
Anorexiant