Research on ingredients listed:
Dandelion Leaf:
https://www.hindawi.com/journals/ecam/2018/2706417/
Marshmallow:
https://www.phcogrev.com/sites/default/files/PhcogRev-2-4-277.pdf
https://austinbhahn.wordpress.com/2015/10/09/for-interstitial-cystitis-sufferers/
http://www.lifesciencesite.com/lsj/life1005s/029_16978life1005s_162_166.pdf
https://www.avivahealth.com/blogs/articles/interstitial-cystitis-treatment
Goldenrod:
https://www.mdpi.com/1999-4923/13/4/573
https://www.mdpi.com/2079-6382/8/4/256
https://www.hindawi.com/journals/crim/2014/698758/
https://link.springer.com/article/10.1007/s00345-002-0293-0
Juniper:
https://www.peertechzpublications.com/articles/AUR-4-119.php
https://europepmc.org/article/med/29513959
Bearberry:
https://www.thieme-connect.com/products/ejournals/html/10.1055/s-0042-1756912
https://www.sciencedirect.com/science/article/abs/pii/S0011393X05802048
https://link.springer.com/article/10.1186/s43094-020-00086-2