Background and aim
Diabetes is a chronic metabolic disorder characterized by elevated blood glucose levels. Although current antidiabetic drugs are highly effective, they are associated with various adverse drug reactions, including life-threatening hypoglycemia, skin rashes, and gastrointestinal intolerance, in addition to being costly. This animal-based experimental study aims to develop a herbal alternative or adjuvant to current antidiabetic drugs using
Berberis asiatica
(
BA
) and
Withania somnifera
(
WS
), which could potentially have fewer adverse drug reactions and reduce the required dose of existing antidiabetic medications.
Material and methods
Seventy-eight adult albino Wistar rats weighing between 150 and 250 g were used for the study. Diabetes mellitus (DM) was induced by intraperitoneal (i.p) injections of streptozotocin (STZ) (65 mg/kg) 15 minutes after nicotinamide (NIC) (110 mg/kg) administration. As the diabetes was confirmed (blood glucose level > 250 mg/dL), rats were divided into 13 different groups mentioned. The standard antidiabetic drugs (metformin [MET] and glimepiride [GLI]) and polyherbal combinations (PHC) (
BA
+
WS
) were administered orally, individually (
WS
and
BA
), and in combination (
BA
+
WS
). Blood samples were collected for biochemical analysis using the tail vein prick method.
The study is based on a total of 13 groups, six rats in each group. Groups 1 and 2 (normal control [NC] and diabetic control [DC]) received distilled water at a dose of 10 mL/kg orally for 28 days. Groups 3-5 (
BA
250, 500, and 1000) received dried ethanolic root extract of
BA
at a dose of 250, 500, and 1000 mg/kg orally, respectively, for 28 days. Groups 6-8 (
WS
250, 500, and 1000) received dried ethanolic root extract of
WS
at a dose of 250, 500, and 1000 mg/kg orally, respectively, for 28 days. Groups 9-11 (PHC 250, 500, and 1000) received dried ethanolic root extract of
BA
+
WS
at a dose of 250, 500, and 1000 mg/kg orally, respectively, for 28 days. Groups 12 and 13 (MET and GLI) received standard drugs MET and GLI at a dose of 250 and 10 mg/kg orally, respectively, for 28 days.
Results
The dried ethanolic root extract of medicinal herbal plants
BA
and
WS
and their combination exhibited significant antidiabetic efficacy. PHC has been shown to have a superior antidiabetic effect than individuals. PHC 500 and 1000 showed blood glucose levels similar to those of the GLI group (P < 0.05). Additionally, PHC 1000 showed blood glucose levels similar to those of the MET group (P < 0.05).
Conclusion
Our r...