Stability-Indicating Validated HPLC Method for Analysis of Berberine Hydrochloride and Trimethoprim in Pharmaceutical Dosage Form

Figure 2

Typical HPLC chromatograms of acid hydrolysis degraded (a) trimethoprim, (b) berberine hydrochloride, and (c) combined capsule solutions.

(a)

(b)

(c)