**4. Conclusions**

In this contribution, three Moroccan *Ericaceae* species, namely *Erica multiflora, Erica scoparia*, and *Calluna vulgaris*, were investigated. The phenolic profiles of the leaf and aerial extracts revealed a quite complex pattern, with up to 52 phenolic compounds positively identified, including phenolic acids and flavonoids. The antioxidant properties of the extracts were evaluated by means of three different methods, namely DPPH, reducing power, and Fe2+ chelating assays, demonstrating their high potential. On the basis of the phenolic profile and remarkable results achieved for the antioxidant activity, such species could be considered as a potential safe source of bioactive compounds to be advantageously employed in traditional Moroccan medicine. Interestingly, myricetin derivates might have important therapeutic potential, e.g., antioxidant, anti-inflammatory, anti-diabetes, anticancer, and protective effects against Alzheimer's disease [42]; furthermore, the efficacy kaempferol and rutin can be exploited against doxorubicin-induced cardiotoxicity [43], while quercetin could be employed for its interesting anticancer effects against prostate and breast cancers [44].

**Author Contributions:** Conceptualization, D.B. and F.C.; Methodology, D.B., F.C., H.B., T.E. and M.L.E.K.; Investigation, D.B., Y.O.E.M., N.M., M.F.T. and E.C.; Writing—Original Draft Preparation, D.B., Y.O.E.M., N.M. and M.F.T.; Writing—Review and Editing, F.C., R.L.V. and H.B.; Supervision, F.C. and M.L.E.K.; Project Administration, L.M. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding.

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** Not applicable.

**Acknowledgments:** The authors thank Merck Life Science and Shimadzu Corporations for their continuous support.

**Conflicts of Interest:** The authors declare no conflict of interest.
