Table 1. Search Strategy across the databases.

Database	Search Terms
Scopus	(nutritional AND supplements AND oral AND health AND adults)
PubMed	((((Nutritional) AND (supplements)) AND (oral)) AND (health)) AND (adults) NOT COVID Filters: Free full text, Clinical Trial, Meta-Analysis, Randomized Controlled Trial, Review, Systematic Review
EMBASE	nutritional:ti,ab,kw AND supplements:ti,ab,kw AND oral:ti,ab,kw AND health:ti,ab,kw AND adults:ti,ab,kw
Web of Science	ALL=(nutritional and supplements and oral and health and adults) and Open Access and Articles (Document Types)