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

Figure 3

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

(a)

(b)

(c)