1: Bensch K, Tiralongo J, Schmidt K, Matthias A, Bone KM, Lehmann R, Tiralongo E.
Investigations into the antiadhesive activity of herbal extracts against
Campylobacter jejuni. Phytother Res. 2011 Aug;25(8):1125-32. doi:
10.1002/ptr.3384. Epub 2011 Jan 31. PubMed PMID: 21280113.


2: Sharma M, Schoop R, Suter A, Hudson JB. The potential use of Echinacea in
acne: control of Propionibacterium acnes growth and inflammation. Phytother Res. 
2011 Apr;25(4):517-21. doi: 10.1002/ptr.3288. Epub 2010 Sep 9. PubMed PMID:
20830697.


3: Sharma SM, Anderson M, Schoop SR, Hudson JB. Bactericidal and
anti-inflammatory properties of a standardized Echinacea extract (Echinaforce):
dual actions against respiratory bacteria. Phytomedicine. 2010 Jul;17(8-9):563-8.
Epub 2009 Dec 29. PubMed PMID: 20036523.


4: Sullivan AM, Laba JG, Moore JA, Lee TD. Echinacea-induced macrophage
activation. Immunopharmacol Immunotoxicol. 2008;30(3):553-74. PubMed PMID:
18618312.


5: Pugh ND, Tamta H, Balachandran P, Wu X, Howell J, Dayan FE, Pasco DS. The
majority of in vitro macrophage activation exhibited by extracts of some immune
enhancing botanicals is due to bacterial lipoproteins and lipopolysaccharides.
Int Immunopharmacol. 2008 Jul;8(7):1023-32. Epub 2008 Apr 7. PubMed PMID:
18486914; PubMed Central PMCID: PMC2467439.


6: Tierra M. Echinacea: an effective alternative to antibiotics. J Herb
Pharmacother. 2007;7(2):79-89. Review. PubMed PMID: 18285309.


7: Gurley BJ, Swain A, Williams DK, Barone G, Battu SK. Gauging the clinical
significance of P-glycoprotein-mediated herb-drug interactions: comparative
effects of St. John's wort, Echinacea, clarithromycin, and rifampin on digoxin
pharmacokinetics. Mol Nutr Food Res. 2008 Jul;52(7):772-9. PubMed PMID: 18214850;
PubMed Central PMCID: PMC2562898.


8: Arroll B. Common cold. Clin Evid. 2006 Jun;(15):2006-14. Review. PubMed PMID: 
16973075.


9: Barnes J, Anderson LA, Gibbons S, Phillipson JD. Echinacea species (Echinacea 
angustifolia (DC.) Hell., Echinacea pallida (Nutt.) Nutt.,Echinacea purpurea (L.)
Moench): a review of their chemistry, pharmacology and clinical properties. J
Pharm Pharmacol. 2005 Aug;57(8):929-54. Review. PubMed PMID: 16102249.


10: Del Mar C, Glasziou P. Upper respiratory tract infection. Clin Evid. 2003
Dec;(10):1747-56. Review. PubMed PMID: 15555175.


11: Scheid DC, Hamm RM. Acute bacterial rhinosinusitis in adults: part II.
Treatment. Am Fam Physician. 2004 Nov 1;70(9):1697-704. Review. Erratum in: Am
Fam Physician. 2006 Jan 1;73(1):33. PubMed PMID: 15554487.


12: Del Mar CB, Glasziou P; BMJ Publishing Group. Upper respiratory tract
infection. Am Fam Physician. 2002 Dec 1;66(11):2143-4. PubMed PMID: 12484696.


13: Ward P, Fasitsas S, Katz SE. Inhibition, resistance development, and
increased antibiotic and antimicrobial resistance caused by nutraceuticals. J
Food Prot. 2002 Mar;65(3):528-33. PubMed PMID: 11899052.


14: Cutaneous drug reaction case reports: from the world literature. Am J Clin
Dermatol. 2001;2(4):267-74. PubMed PMID: 11705254.


15: Vestweber AM, Beuth J, Ko HL, Tunggal L, Buss G, Pulverer G. [In vitro
activity of Mercurius cyanatus complex against relevant pathogenic bacterial
isolates]. Arzneimittelforschung. 1995 Sep;45(9):1018-20. German. PubMed PMID:
7488303.


16: BOLLAND J. [DECREASE OF LEUKOCYTE RESISTANCE BY CHLORONITRINE AND ITS
PREVENTION BY ECHINACIN]. Folia Haematol Int Mag Klin Morphol Blutforsch.
1964;81:297-305. German. PubMed PMID: 14183228.