Nepeta cataria

Weight of leaves used

Volume of solvent used

Concentrated extract

Extraction yield

Mean ± SD

P value

Methanol 70%

150

750

6.01

4.01

4.03 ± 0.105

0.54

150

750

5.9

3.93

150

750

6.21

4.14

Water

150

750

3.5

2.33

3.11 ± 0.694

150

750

5.5

3.67

150

750

5

3.33