From:  Alpha lipoic acid: advancing insights in diabetic neuropathy through updated systematic review and meta-analysis

 Inclusion and exclusion criteria.

CategoryInclusionExclusion
PopulationPatients with type II diabetes (both men and women), the age group of 18 years and above, and patients with established diabetic neuropathy are includedSevere neuropathy, myopathy, vascular disease, hepatic or renal disease, antioxidant therapy, alcoholism, drug abuse, hypothyroidism, neoplastic disorders, Parkinsonism, uremia, acute or chronic musculoskeletal disorders, foot ulcers, pregnancy, lactation, or child-bearing age without birth control devices, cardiovascular disorder
InterventionStand-alone oral ALA (dosage: 600–1,800 mg/day)A combination of drugs, routes other than oral, and combination routes is not included
ComparatorPlacebo-controlled groupOther than in the inclusion criteria
OutcomeEfficacy and safety parametersOther than in the inclusion criteria
Study typeRandomized controlled trials (RCTs)Preclinical studies, systematic reviews, observational studies, retrospective clinical trials, conference proceedings, book chapters, review articles
LanguageOnly EnglishOther than in the inclusion criteria (all other languages other than English are excluded from the study)

ALA: alpha lipoic acid.