Editing ACE inhibitor (section)

===Naturally occurring===
* A comprehensive resource on anti-hypertensive peptides is available in form of a database. It contains around 1700 unique antihypertensive peptides<ref name="pmid25392419">{{cite journal | vauthors = Kumar R, Chaudhary K, Sharma M, Nagpal G, Chauhan JS, Singh S, Gautam A, Raghava GP | title = AHTPDB: a comprehensive platform for analysis and presentation of antihypertensive peptides | journal = Nucleic Acids Research | volume = 43 | issue = Database issue | pages = D956–D962 | date = January 2015 | pmid = 25392419 | pmc = 4383949 | doi = 10.1093/nar/gku1141 }}</ref>
* [[Arfalasin]] (HOE 409) is angiotensin antagonist.<ref name="Google Patents 1975">{{cite web | title=US4013791A - Peptides having an antihypertensive effect | website=Google Patents | date=1975-12-03 | url=https://patents.google.com/patent/US4013791 | access-date=2020-03-21}}</ref>

====Dairy products====
* Caso[[kinin]]s and lactokinins, breakdown products of [[casein]] and [[whey]], occur naturally after ingestion of [[milk]] products, especially [[cultured milk]]. Their role in blood pressure control is uncertain.<ref name="FitzGerald2004">{{cite journal | vauthors = FitzGerald RJ, Murray BA, Walsh DJ | title = Hypotensive peptides from milk proteins | journal = The Journal of Nutrition | volume = 134 | issue = 4 | pages = 980S–988S | date = April 2004 | pmid = 15051858 | doi = 10.1093/jn/134.4.980S | doi-access = free }}</ref>
* The [[lactotripeptides]] Val-Pro-Pro and Ile-Pro-Pro produced by the [[probiotic]] ''[[Lactobacillus helveticus]]'' or derived from [[casein]] have been shown to have ACE-inhibiting and antihypertensive functions.<ref name="pmid16093403">{{cite journal | vauthors = Aihara K, Kajimoto O, Hirata H, Takahashi R, Nakamura Y | title = Effect of powdered fermented milk with Lactobacillus helveticus on subjects with high-normal blood pressure or mild hypertension | journal = Journal of the American College of Nutrition | volume = 24 | issue = 4 | pages = 257–265 | date = August 2005 | pmid = 16093403 | doi = 10.1080/07315724.2005.10719473 | s2cid = 18513821 }}</ref><ref name="pmid19061526"/> In one study, ''L. helveticus'' PR4 was isolated from Italian cheeses.<ref name="Minervini 2003">{{cite journal | vauthors = Minervini F, Algaron F, Rizzello CG, Fox PF, Monnet V, Gobbetti M | title = Angiotensin I-converting-enzyme-inhibitory and antibacterial peptides from Lactobacillus helveticus PR4 proteinase-hydrolyzed caseins of milk from six species | journal = Applied and Environmental Microbiology | volume = 69 | issue = 9 | pages = 5297–5305 | date = September 2003 | pmid = 12957917 | pmc = 194939 | doi = 10.1128/AEM.69.9.5297-5305.2003 | bibcode = 2003ApEnM..69.5297M }}</ref>