Review Article

A Review of In Vitro and In Vivo Studies on the Efficacy of Herbal Medicines for Primary Dysmenorrhea

Table 2

In vivo studies of herbal medicines for PD.

StudyHerbal medicinesAnimal modelHerbal extractionRoute of administrationDosage and periodsOutcomes and mechanisms

Hsia et al. (2008) [56]Adlay hull Female Sprague-Dawley rats at estrus stage (200–300 g)Solvent: 1 L of methanolSubcutaneous injection5 or 10 mg/kgUterine contraction (induced by PG)↓

Ma et al. (2011) [50]Shao Fu Zhu Yu decoctionFemale ICR mice (18–22 g)Solvent: 1 L of boiling water
Time: twice for 1 h
Purity: 80% (by ethanol)
Oral0.92, 1.84, and 3.68 g/kg(1) Acetic acid-induced writhing↓ 
(2) Hot-plate test latency (—) 
(3) Formalin-induced licking↓ 
(4) Oxytocin-induced writhing↓ 
(5) ↓ 
(6) NO↓

Liu et al. (2011) [18]Xiang-Fu-Si-Wu decoctionVirgin female Wistar rats (180–220 g) and female ICR mice (20–25 g)Solvent: ethanol (10–80%)Oral54.60, 27.30, and 5.46 mg crude herbs/g/d

Shi et al. (2012) [35]Isoliquiritigenin (from Glycyrrhiza glabra)Nonpregnant ICR mice (18–22 g)Purity: >99%Oral20, 40, and 80 mg/kg(1) Acetic acid-induced writhing↓ 
(2) Hot-plate test latency↑

Rowlands et al. (2012) [26]Bak Foong PillsSpecified pathogen-free C57/B6 miceOral0.25, 0.5, 1, and 5 g/kg/day
For 3 days
(1) PGE2 level↓  (2) Acetic acid-induced writhing↓ 
(3) Somatostatin receptors 4 and 2 mRNA↓

Su et al. (2012) [27](1)  Commiphora myrrha  (MWE)
(2)  Boswellia carterii  (FWE)
(3) Combined extracts (CWE)
ICR mice (18–22 g)Solvent: 20 L of water
Time: twice for 1 h
Intragastric(1) Control
(2) Dolantin (25 mg/kg)
(3) MWE (3.9 g/kg)
(4) FEW (6.8 g/kg)
(5) CWE (5.2 g/kg)
For 3 days
(1) Paw edema (induced by formalin, carrageenan)↓  
(2) PGE2 level↓ 
(3) Oxytocin-induced writhing↓

Chen et al. (2013) [36]Yuanhu painkillers (YHP)Virgin female Wistar rats (250–300 g)Oral(1) YHP (0.698 g/kg)
(2) Tetrahydropalmatine (0.07 g/kg)
(3) Imperatorin (0.02 g/kg)
(4) Polypharmacy (0.02 g/kg)
(5) Tetrahydropalmatine + imperatorin (0.07 g/kg)
For 10 days
(1) SOD↑ 
(2) MDA↓ 
(3) NO, iNOS↓ 
(4) i-κB↑ 
(5) NF-κB↓ 
(6) COX-2↓

Liu et al. (2014) [58]Xiang-Fu-Si-Wu decoctionFemale Sprague-Dawley rats (220–250 g)Solvent: 80% ethanol
Time: twice for 2 h
Oral3.78 g crude herbs/kg/d
For 7 days
(1) PG level (—)
(2) Lysophospholipids↑