One of the most widely used herbs in America right now is echinacea. Native Americans gave the medicinal herb echinacea its name because of the prickly scales that mimic the enraged hedgehog’s spines on its enormous conical seed head (echinos is Greek for hedgehog).
Native Americans may have used echinacea for more than 400 years to treat wounds and illnesses as well as a general “cure-all,” according to archaeologists who have discovered evidence of this. Echinacea has been used historically to treat blood poisoning, diphtheria, syphilis, malaria, and scarlet fever. Although this herb was widely used in the 18th and 19th centuries, its use started to diminish in the US once antibiotics were developed. In Germany, echinacea preparations gained popularity during the course of the 20th century. In actuality, Germany has been the site of the majority of echinacea scientific research.
Today, individuals take echinacea to lessen the severity of the common cold and flu and to lessen symptoms including fever, coughing, and sore throats (pharyngitis). Echinacea is another plant that many herbalists advise taking to help the body fight infections and strengthen the immune system.
General Uses
Echinacea may include active ingredients that improve immunological function, ease pain, lessen inflammation, and have hormonal, antiviral, and antioxidant effects, according to a number of laboratory and animal studies. Because of this, qualified herbalists may suggest echinacea as a treatment for slow-healing wounds, ear infections, athlete’s foot, sinusitis, vaginal yeast (Candida) infections, ear infections, otitis media, hay fever, and slow-healing wounds. Echinacea and cichoric acid may help suppress colon cancers, according to preliminary laboratory studies. According to one study, using echinacea extract before contracting the herpes simplex virus (HSVI) may have an antiviral effect on the recurrence of cold sores.
Common Cold
It is debatable if echinacea aids in the prevention or treatment of the common cold. According to certain research, the herb can hasten your recovery. Others claim that echinacea has no effect at all on a cold. According to several clinical studies, persons who take echinacea as soon as they start to feel unwell have milder colds and experience less symptoms than those who do not. In a study of 95 patients who had fever, runny nose, scratchy throat, and other early signs of the flu and cold, it was discovered that those who drank many cups of echinacea tea daily for five days felt well more quickly than those who drank tea without the herb.
Echinacea decreased cold risk by 58 percent and cold duration by 1 to 4 days, according to a study of 14 clinical trials. Some experts, however, contest these results, arguing the research had a number of flaws. Clinical trials have used a variety of echinacea formulations. It’s crucial to get a high-quality echinacea supplement and to start taking it as soon as a cold starts, numerous times each day for the first few days. For advice, consult your health care practitioner.
Echinacea supports the immune system in what ways?
Mixed findings have emerged from studies. Echinacea extracts do appear to affect the immune system, your body’s line of protection against pathogens. According to research, it boosts the quantity of white blood cells, which fight illnesses. The herbal medicine had a very little advantage in avoiding colds, according to an analysis of more than a dozen research that was published in 2014.
However, neither children nor adults who took echinacea for a cold reported any relief from it in two trials supported by the National Center for Complementary and Integrative Health.
However, because different studies examine different echinacea varieties and potencies as well as various plant or root portions, it might be challenging to compare the findings of several studies. There’s a chance that certain variations are superior to others. Additionally, it’s probable that the herbal cure will work against some but not all of the more than 200 cold-causing viruses.
How does echinacea work and what is it?
Echinacea, also known as E. angustifolia, E. purpurea, and E. pallida, is a plant related to ragweed and sunflowers. The root, flower, and leaf are all utilized medicinally.
Native to the United States, echinacea species are found east of the Rocky Mountains. It appears that echinacea stimulates bodily processes that reduce inflammation. It might also strengthen the immunological system of the body.
The most typical applications of echinacea are for the treatment of infections and the common cold, although most of these applications lack solid scientific backing. Echinacea use for COVID-19 is likewise not well supported by the available research.
Why echinacea shouldn’t be taken?
Consult your doctor before using echinacea if you regularly take other medications. Additionally, if you smoke, use illegal substances, drink alcohol or caffeine-containing beverages, you should disclose this to your doctor. These might impact how echinacea functions.
If you have an autoimmune ailment (like lupus), an infection with the human immunodeficiency virus (HIV), or acquired immunodeficiency syndrome, echinacea may not be beneficial to you (AIDS). Before beginning to use echinacea, you should discuss with your doctor if you are pregnant or nursing.
Echinacea allergy risk may be increased if you have a history of allergies to daisies, ragweed, marigolds, chrysanthemums, or other related plants.
Immunomodulatory effects
Three mechanisms—activation of phagocytosis, stimulation of fibroblasts, and an increase in respiratory activity that increases leukocyte mobility—are responsible for the plant’s or its preparations’ immunostimulant activity. [9] Numerous in vivo studies on the immunomodulatory and anti-inflammatory effects of E. purpurea suggest that administration of the plant improves innate immunity and that the immune system is made more resilient to pathogenic infections by activating neutrophils, macrophages, polymorphonuclear leukocytes (PMN), and natural killer (NK) cells. [7] The prevention and treatment of a variety of infectious disorders, including infections of the upper and lower respiratory systems, wound infections, and persistent pelvic infections, may be appropriate as a result. [2,3] Alkamides, ketoalkenes, caffeic acid derivatives, polysaccharides, and glycoproteins are present in the complex chemical makeup of Echinacea’s roots and herbs, and it is thought that these compounds are what give these plants their well-known immunostimulatory and anti-inflammatory properties [Figure 1]. Alkamides have also been shown to work on cannabinoid receptor type 2 (CB2), which is thought to be a potential mechanism for their immunomodulatory effects [7]. [10,11,12] Their potential molecular mechanism may involve an increase in nuclear factor kappa-light-chain-enhancer of activated B cells (NF-B), activating transcription factor 2/cAMP responsive element binding protein 1 (ATF-2/CREB-1), cyclic adenosine monophosphate (cAMP), mitogen-activated protein kinases (p38/MAPK), and c-Jun N-terminal kinases (JNK) signaling. [5] According to a different study, N-alkamides from a tincture of roots and herbs stimulate CB2 in a synergistic manner, which results in immunomodulatory effects as well as in vitro superstimulation of IL-10 and suppression of TNF-. [12] Additionally, they have the capacity to inhibit the cyclooxygenase enzymes (COX-1 and COX-2) as well as the 5-lipoxygenase (F-LO), which inhibits NK cells and has anti-inflammatory effects. [13] In healthy rats challenged with bacterial lipopolysaccharide (LPS), the alkamide fraction of the plant was administered, and this resulted in a dose-dependent increase in the release of nitric oxide (NO), TNF, and phagocytic activity from alveolar macrophages. The aforementioned effects could support the development of the initial immune response mediators as well as antiviral activities. However, the release of TNF-, interferon gamma (IFNg), or IL-2 by splenocytes was unaffected by the various dosages of alkamides, cichoric acid, or polysaccharides. Additionally, according to research done on Swiss mice, E. purpurea stimulates the NO response of peritoneal exudate cells (PEC) to LPS 2-3 times more than the control. Alkamides also disperse through Caco-2 monolayers, and the addition of other components has no impact on this diffusion [3]. [14] They are also identified by liquid chromatography-tandem mass spectrometry (LC-MS/MS) in the blood stream after oral consumption of the plant. [15,16] Six healthy participants had their buccal and esophageal membranes quickly absorbed alkamides from E. purpurea lozenges. IL-12p70, IL-8, IL-6, and TNF- were among the proinflammatory cytokines that were considerably reduced by each dose. This impact appears to be unrelated to alkamide dosages, pointing to potential synergistic effects of plant chemicals. [17] Figure 2 summarizes a number of alkamides’ pharmacological effects.