Table 2.

Adverse events reported in reviewed clinical trials.

References	Fever	Numbness or Tingling	Facial Flushing	Headache	Neuropathic Pain	Spasticity	Pain at the Site	Dizziness	Cerebrospinal Fluid Leakage	Respiratory Infections	Nausea and Vomiting	Sensory Deterioration	Urinary Disturbances
Pal et al., 2009
Ra et al., 2011
Karamouzian et al., 2012
Dai et al., 2013
Jiang et al., 2013
El-Kheir et al., 2014
Cheng et al., 2014
Mendonça et al., 2014
Larocca et al., 2017
Satti et al., 2016
Vaquero et al., 2016
Vaquero et al., 2017
Vaquero et al., 2018
Hur et al., 2016
Oh et al., 2016
Oraee-Yazdani et al., 2021
Yang et al., 2021

AE present; AE absent.