Research on ingredients listed:
Lemongrass:
https://pubmed.ncbi.nlm.nih.gov/19662581/
https://pubmed.ncbi.nlm.nih.gov/25255928/
https://onlinelibrary.wiley.com/doi/abs/10.1111/anu.12637
https://www.sciencedirect.com/science/article/pii/S0378874111004971
Licorice:
https://pubmed.ncbi.nlm.nih.gov/33581688/
https://pubmed.ncbi.nlm.nih.gov/24520776/
https://pubmed.ncbi.nlm.nih.gov/24963489/
https://pubmed.ncbi.nlm.nih.gov/24173639/
https://pubmed.ncbi.nlm.nih.gov/35058778/
https://pubmed.ncbi.nlm.nih.gov/35671864/
https://pubmed.ncbi.nlm.nih.gov/26370586/
https://pubmed.ncbi.nlm.nih.gov/33714945/
https://pubmed.ncbi.nlm.nih.gov/33857487/
https://pubmed.ncbi.nlm.nih.gov/25036817/
https://pubmed.ncbi.nlm.nih.gov/25612451/
https://pubmed.ncbi.nlm.nih.gov/23261828/
https://pubmed.ncbi.nlm.nih.gov/28108937/
https://pubmed.ncbi.nlm.nih.gov/28775294/
https://pubmed.ncbi.nlm.nih.gov/24294902/
https://pubmed.ncbi.nlm.nih.gov/24447171/
https://pubmed.ncbi.nlm.nih.gov/28263754/
https://pubmed.ncbi.nlm.nih.gov/23165939/
https://pubmed.ncbi.nlm.nih.gov/36238303/
Lemon Peel:
https://pubmed.ncbi.nlm.nih.gov/32858188/
https://pubmed.ncbi.nlm.nih.gov/33289132/
https://pubmed.ncbi.nlm.nih.gov/28359944/
https://pubmed.ncbi.nlm.nih.gov/34836851/
https://pubmed.ncbi.nlm.nih.gov/34249019/
Elderberry:
https://pubmed.ncbi.nlm.nih.gov/33827515/
https://www.sciencedirect.com/science/article/pii/S1756464614002400
https://pubmed.ncbi.nlm.nih.gov/30670267/
https://pubmed.ncbi.nlm.nih.gov/11399518/
https://pubmed.ncbi.nlm.nih.gov/35409309/
https://pubmed.ncbi.nlm.nih.gov/25744406/
https://pubmed.ncbi.nlm.nih.gov/33745925/
https://pubmed.ncbi.nlm.nih.gov/23118903/
https://pubmed.ncbi.nlm.nih.gov/35336621/
https://pubmed.ncbi.nlm.nih.gov/22972323/
https://pubmed.ncbi.nlm.nih.gov/31398785/
Peppermint:
https://pubmed.ncbi.nlm.nih.gov/29085843/
https://link.springer.com/article/10.1186/1742-4690-5-27
https://www.phytojournal.com/archives/2020/vol9issue3/PartY/9-3-248-685.pdf
https://www.proquest.com/openview/0fcb7e61eaa5900ea403b14471dd0145/1?pq-origsite=gscholar&cbl=54977
https://onlinelibrary.wiley.com/doi/abs/10.1111/jpn.13122