Table 2.

Characteristics of participants and supplementation protocols of the selected studies

Characteristics	Types	Study
Participants	Healthy	[33–35, 42]
	Healthy physically active	[15, 16, 41]
	Healthy with light-to-moderate anxiety levels	[20, 40]
	Healthy overweight/obese with mild/moderate symptoms of fatigue	[39]
Supplementation product	Manufactured	[15, 20, 33, 35, 39–41]
	Registered product®	[16, 42]
	No reported	[34]
% Withanolides of the supplementation product	No less than 5%	[15, 20, 35, 41]
	No less than 10%	[16, 42]
	35%	[39, 40]
	No reported	[33, 34]
Total dose (mg)	240	[40]
	300	[20]
	500	[16]
	600	[15, 35, 39, 41]
	750–1000-1250	[34]
	1000	[33, 42]
Duration	2 weeks	[42]
	30 days	[34]
	8 weeks	[15, 35, 39, 41]
	60 days	[40]
	90 days/12 weeks	[16, 20]
	6 months	[33]
Dose schedule	a.m	[16]
	After breakfast	[20]
	After dinner	[39, 40]
	a.m. and p.m	[15, 33, 34]
	No reported	[35, 41, 42]

a.m. ante meridiem, p.m. post meridiem, mg milligrams