Table 2.

Challenges of n-3 PUFAs Supplementation Studies in Children with ADHD.

Shortcomings	Studies
DHA as main component	Voigt et al., (2001); Richardson et al., (2002)
EPA<500 ​mg	Voigt et al., (2001); Richardson et al., (2002); Sinn et al., (2008); Vaisman et al., (2008)
Low n-3 PUFAs (DHA ​+ ​EPA) dosage ​< ​500 ​mg	Voigt et al., (2001); Sinn et al., (2008); Vaisman et al., (2008)
Duration <16 ​wks	Richardson et al., (2002); Sinn et al., (2008); Vaisman et al., (2008); Manor et al., (2012); Chang et al., (2019)

Note: DHA: docosahexaenoic acid; EPA, eicosapentaenoic acid; N-3 PUFAs, omega-3 polyunsaturated fatty acids; Wks, weeks.