DC Formula 571 Review
DC Labs Echinacea (Formula 571) is presented on this page under the heading Echinacea with Goldenseal Root, with the product line name Echinacea Supplement - DC Labs Formula 571. The page states that the product supports the immune system and marks the claim as not evaluated by the Food and Drug Administration. It also states that the product is not intended to diagnose, treat, cure or prevent any disease. The listed features are gluten-free, made in USA, and free shipping. The product is sold in two options on this page, 120 capsules and 60 capsules, and the displayed price range runs from $11.05 to $20.40. The short description in the additional details reads Echinacea Supplement with Golden Seal Root. The Amazon category is listed as herbal-supplements, and the ECN category is listed as Health and Beauty > Nutrition. The directions say to take 1 to 3 capsules three times daily with water. The caution states that if you are pregnant or nursing, you should not take this product. The page lists the product as having items in stock and offers options to create a new wish list and to write a review. The additional details also state that all child products are the same product, differing only in size or form. The UPC field on the page is blank, so no barcode is given for this bottle. Related products shown on the same page include DC Labs Echinacea 3X with 120 capsules, DC Labs Echinacea Purpurea Root 420 mg Formula 596 with 90 capsules, DC Labs Menopausal Formula, and DC Labs Formula 43 Plus. These related items are separate listings and are not the product described on this page. The page carries one customer review, which is noted in the review section. No ingredient list with amounts appears in the scraped text, so the composition of the capsules cannot be confirmed from this page beyond the product name and the mention of goldenseal in the heading and short description.
Study, Trial or Testing Result Summary
Members Only22 human studies · 10 improved
This formula is a 450 milligram herbal blend of purple coneflower (echinacea) with goldenseal, burdock, gentian, cayenne and wood betony. The label does not say how much echinacea is in each serving, so it cannot be checked against the doses used in the studies, and goldenseal and the other herbs were not tested in any of them. For echinacea alone, a 2025 review of nine placebo-controlled trials in 3,169 children found it slightly shortened colds and other upper respiratory infections, cut new episodes and a med use, and caused somewhat more mild side effects [1]. In 282 adults who started it at the first cold symptom, symptom scores were 23.1% lower than placebo [2]. In 201 children, tablets prevented about a third of colds compared with vitamin C [3]. In 524 children, those taking it had a 28% lower chance of another infection, though this needs confirmation [4]. In 120 adults, fewer tested positive for respiratory viruses, but symptomatic episodes did not drop significantly [5]. In 407 children with infections, it did not shorten illness and was linked to more rash [6]. Animal and cell studies are never counted.
See all 22 studies →Hide the studies
- Nine placebo-controlled trials in 3,169 children found that Echinacea purpurea shortened upper respiratory infections slightly, reduced new episodes and a med use, and caused somewhat more mild side effects.Efficacy and safety of Echinacea purpurea in treating upper respiratory infections and complications of otitis media in …
- A review of 45 pediatric studies found that the Pelargonium root extract EPs 7630 has enough evidence to reduce the severity and duration of upper and lower respiratory infections in children, while evidence for other herbal products, including various purple coneflower preparations, is limited.Phytotherapy for acute respiratory tract infections in children: a systematically conducted, comprehensive review.
- In a placebo-controlled trial of 524 children aged 2 to 11, those who took echinacea for a cold had a 28% lower chance of getting another upper respiratory infection over about 4 months compared with placebo, though this was a secondary analysis that needs confirmation.Echinacea purpurea for prevention of upper respiratory tract infections in children.
- In 407 children aged 2 to 11 with upper respiratory infections, Echinacea purpurea did not shorten illness or reduce symptom severity compared with placebo, and it was linked to more rash.Efficacy and safety of echinacea in treating upper respiratory tract infections in children: a randomized controlled tri…
- In 302 volunteers taking an echinacea root extract for 12 weeks, the time until the first upper respiratory infection and the share of people who got an infection were not significantly different from placebo, though participants believed the extracts helped more.Echinacea root extracts for the prevention of upper respiratory tract infections: a double-blind, placebo-controlled ran…
- In 282 adults who started Echinacea purpurea at the first cold symptom and took it for 7 days, total daily symptom scores were 23.1% lower than with placebo in those who followed the protocol.Efficacy of a standardized echinacea preparation (Echinilin) for the treatment of the common cold: a randomized, double-…
- In 246 adults treated for a respiratory infection, higher-dose new Echinacea formulations cleared viruses faster than conventional lower-dose products, with 56% recovering by day 10 versus 44%, but the difference in recovery time by day 10 was not statistically significant.Novel Echinacea formulations for the treatment of acute respiratory tract infections in adults-A randomized blinded cont…
- In 201 children aged 4 to 12, Echinacea tablets taken three times daily for prevention prevented about a third of colds and reduced a med courses (6 vs 15 children) compared with vitamin C.Read the study on PubMed (33832544) →
- In 177 adults with a common cold, 30 mL per day of Kan Jang, a mix that includes Echinacea purpurea, for 5 days relieved cough more than placebo and was well tolerated.Antitussive effect of a fixed combination of Justicia adhatoda, Echinacea purpurea and Eleutherococcus senticosus extrac…
- In 148 college students with a new cold, unrefined echinacea capsules taken for up to 10 days did not shorten colds or lessen symptoms compared with placebo.Treatment of the common cold with unrefined echinacea. A randomized, double-blind, placebo-controlled trial.
- In 128 adults with new cold symptoms, 300 mg a day of Echinacea purpurea juice for up to 14 days did not reduce symptoms or shorten the cold compared with placebo.Echinacea purpurea therapy for the treatment of the common cold: a randomized, double-blind, placebo-controlled clinical…
- In 120 healthy adults taking 2,400 mg of Echinacea purpurea extract daily in monthly cycles over about five months, fewer people tested positive for respiratory viruses, including SARS-CoV-2, than in the control group, although the reduction in symptomatic episodes was not statistically significant.Echinacea Purpurea For the Long-Term Prevention of Viral Respiratory Tract Infections During Covid-19 Pandemic: A Random…
- In 108 people who often caught colds, 8 ml a day of Echinacea purpurea fluid extract for 8 weeks did not significantly reduce how many colds or respiratory infections they got, how long they lasted, or how severe they were compared with placebo.A randomized controlled trial of the effect of fluid extract of Echinacea purpurea on the incidence and severity of cold…
- In 108 mostly male people with chronic lung disease and a respiratory infection, Echinacea combined with zinc, selenium and vitamin C for 14 days gave less severe and shorter flare-ups than placebo, but Echinacea alone did not.Echinacea purpurea along with zinc, selenium and vitamin C to alleviate exacerbations of chronic obstructive pulmonary d…
- In 61 people prone to upper respiratory infections, an ELA blend containing Echinacea purpurea extract taken for 60 days had fewer infections than placebo (2 vs 8 episodes) and fewer throat symptoms (8 vs 16).Therapeutic Potential of a Natural Blend of Aronia melancarpa, Lonicera caerulea, and Echinacea purpurea Extracts in Tre…
- In 58 hospital workers who completed an 8-week winter study, Echinacea purpurea capsules did not significantly change the number of sick days compared with placebo.Effects of echinacea on the frequency of upper respiratory tract symptoms: a randomized, double-blind, placebo-controlle…
- In 32 exercising adults taking Echinacea purpurea or placebo for 4 weeks, the Echinacea group had shorter upper respiratory infections (3.4 vs 8.6 days) with no difference in how many infections occurred.Echinacea purpurea and mucosal immunity.
- In 130 children with common colds, Kan Jang added to standard treatment for 10 days reduced symptoms and sped recovery more than Immunal, an Echinacea preparation, which showed no added benefit over standard treatment.Comparative controlled study of Andrographis paniculata fixed combination, Kan Jang and an Echinacea preparation as adju…
- In an open trial of people with acute respiratory infections, Kan Jang improved several symptoms more than bromhexine, while an Echinacea mixture without the third herb did not differ from bromhexine except for less cough frequency.Randomized trial of a fixed combination (KanJang) of herbal extracts containing Adhatoda vasica, Echinacea purpurea and …
- In a small open-label study of children with upper respiratory infections given Echinacea extract for 10 days, symptoms improved and no allergic or adverse reactions occurred, but the trial was too small to judge effectiveness.Echinacea purpurea L. in children: safety, tolerability, compliance, and clinical effectiveness in upper respiratory tra…
- In 995 people with chronic recurring respiratory disease followed for 3 months, those using echinacin (782) were reported to have clinical and cost benefits compared with standard care without an immune-boosting product (213), though the abstract's wording on risk and relapse length is unclear.[Effectiveness of echinacin in therapy of chronic recurrent respiratory disease].
- In 74 adults with acute sore throat taking Echinacea and sage lozenges for 4 days, throat pain fell 48% after one lozenge and viral load in the 18 virus-positive patients dropped 96% after 4 days, with good tolerability.Reduction of Viral Load in Patients with Acute Sore Throats: Results from an Observational Clinical Trial with Echinacea…
Review Totals and Summary
Members Only1 reviews
Across the stores, DC Formula 571 has received a total of one rating, and the themes below are drawn from the single written review that was readable on its product page. This summary focuses exclusively on the DC Formula 571 capsules. The sole customer review offers a positive, though somewhat tentative, assessment of the DC Formula 571 capsules. The reviewer indicated that they needed to use the product for a significant period before feeling able to provide a fair evaluation, suggesting that the benefits of the supplement are not immediate but rather emerge over time. This implies that potential users might need to approach the product with patience, understanding that its effects manifest gradually rather than instantly. The reviewer also noted a general history of achieving good results from echinacea, framing their experience with DC Formula 571 within this broader context of familiarity with the herb. This suggests that their positive outlook might stem from a pre-existing understanding of echinacea's benefits, rather than a detailed, specific assessment of this particular formula's unique impact. The review did not specify any particular symptom or health outcome that the DC Formula 571 capsules addressed, instead referring to the general efficacy the reviewer typically experiences with echinacea. Furthermore, the reviewer did not provide details such as the size of the product they purchased, the exact duration for which they took it, or whether they used the goldenseal combination, leaving these aspects unaddressed in the feedback. Regarding common consumer concerns like taste, capsule size, price, or packaging, the single review offered no complaints. However, this absence of feedback on these topics is due to the reviewer not discussing them at all, rather than an explicit endorsement of these features. Consequently, no broader pattern can be drawn about customer satisfaction or dissatisfaction with these practical aspects of the DC Formula 571 capsules. The single comment available serves as an anecdote, reflecting one individual's cautious and time-dependent positive experience with the product, particularly for someone already familiar with echinacea.
Biohacker Summary
Members Only7 of 10 recommend it
Six of the ten panelists spoke about echinacea, the main ingredient, and opinion leans positive but is mixed. Two of them recommend it most recently, mainly for infections, colds and fighting viruses, and one of those suggests clinically studied formulas paired with andrographis; another keeps it in an emergency travel pack, and one of the six, who tracks red blood cells and immune health, was neutral. One of them warns that regular high doses may impede the body's innate immune function and suggests using it only when run down or for a single winter month, never more than four weeks at a time. Another used to take it after workouts for its antioxidant effects but now warns against it because he says it interferes with the body's adaptation to exercise stress. The only dose given was 90 drops of extract in a drink for cough or illness, and the only forms mentioned were liquid extract and herbal formulas.
See all 6 biohackers →Hide the biohackers
Dr. Mark Hyman · Echinacea · uses
- Includes echinacea in his emergency travel pack of supplements.
- Recommends echinacea as a bitter herb that helps drive out dampness and phlegm, possessing antiviral properties.
- Recommends Echinacea, noting its bitterness, as another good herb for fighting viruses.
- Recommends echinacea for fighting viruses, noting its bitter taste and ability to drive out dampness and phlegm.
Thomas DeLauer · Echinacea · warns
- Used to take Echinacea post-workout but now warns against it, stating that it interferes with the body's natural adaptation to oxidative stress from exercise.
- Recommends taking Echinacea for antioxidant benefits.
- Recommends taking Echinacea for its antioxidant and anti-inflammatory properties, which can help with joint stiffness on a ketogenic diet.
- Mentions Echinacea as an important antioxidant that can aid in recovery from cardio.
- Recommends buffering stress with things like echinacea, which have a high antioxidant or polyphenol profile.
Ben Greenfield · Echinacea · neutral
- Notes that Echinacea is an herb that helps with the immune system and, surprisingly, with red blood cells.
- Recommends echinacea to improve oxygen transport capacity, stimulate erythropoiesis production, and increase T-cell activity, leading to massive increases in oxygen availability and a boost in erythropoietin, similar to blood doping.
- Keeps echinacea on hand all the time to help keep his immune system in top condition and notes it also helps with red blood cells and oxygen utilization for athletes.
- Mentions echinacea as something that can increase red blood cell production.
- Says that when he is disciplined about taking his Mike Chlorella formula with Echinacea, he gets a bump in red blood cell production and cold weight loss.
- Recommends echinacea as a substance that can increase erythropoietin, contributing to a higher VO2 max.
- Mentions the amazing echinacea + sauna training hack for building new red blood cells.
- Ben Greenfield started experimenting with AFA, beetroot, and echinacea, which led to a dramatic change in his ability to handle training, improving oxygen uptake and reducing time to fatigue, helping him achieve world record pace in broken swims.
- Notes that echinacea is well-documented for immune support and also has a backstory in helping with red blood cell production.
- Notes that Moxeys Mints are infused with Echinacea root, which can restore and maintain balance in mind and body.
- Discusses goldenseal as an herb that stimulates bile flow, which helps drain metabolic fluid from the head to treat sinus infections.
Dr. Eric Berg · Echinacea · recommends
- Recommends echinacea for bacterial infections.
- Recommends consuming echinacea for infections.
- Recommends echinacea as another good remedy for infections.
- Recommends including 90 drops of Echinacea extract in a natural a med drink for cough or illness.
- Recommends choosing one or two herbs, including echinacea, to help inhibit EBV from coming out of remission.
- States that echinacea is their choice over Tamiflu for the flu.
- Recommends Echinacea as a natural herb that can help suppress viruses, especially the Epstein-Barr virus.
- Discusses a study comparing Echinacea to Tamiflu for the flu, noting that Echinacea had the same efficacy in decreasing symptoms with reduced risk of complications and fewer side effects. He explains that Echinacea has antiviral, anti-inflammatory, and anti-migraine effects, and enhances the immune system by increasing monocytes, stimulating neutrophils, and natural killer cells.
- Recommends using a combination of echinacea oil and tea tree oil as a mist for clearing sinuses, suggesting it can be added to a hot bath, nebulizer, or neti pot.
- Dr. Berg states that Goldenseal is one of a number of natural herbal remedies that can have the potential to reduce the pain and inflammation in your knees.
- Dr. Berg lists Goldenseal as a natural herbal a med in the context of a med resistance.
- Lists goldenseal as a natural herbal a med that kills pathogenic bacteria without side effects and doesn't harm friendly bacteria.
Andrew Huberman · Echinacea · neutral
- Explains if common preventatives and treatments such as echinacea work for colds and flu.
- Warns that taking Echinacea regularly at high doses can potentially impede innate immune system function, and suggests reserving its use for when feeling run down or during a single winter month, not continuously or for more than four weeks at a time.
- Mentions Echinacea as a supplement to prevent and treat colds and flu.
- Discusses Echinacea in the context of preventing and treating colds and flu.
Dave Asprey · Echinacea · recommends
- Suggests looking at formulations of echinacea and Andrographis that are clinically studied to reduce upper respiratory infections.
- Notes that Andrographis in combination with echinacea has been studied to reduce respiratory tract viral and bacterial infections.
RAL Summary
Members OnlyTier 4 for Lungs and Breathing
Echinacea alone has mixed but partly positive human evidence for colds and respiratory infections (10 of 22 studies improved), but the echinacea amount is hidden in a blend and there are no counted reviews, so it stays emerging.
- Emerging: not enough evidence to rank higher yet.
Where the evidence disagrees: 6 of the 22 human studies found no effect.
More Details
Members OnlyBody systems · Combine with · Possible side effects
Body systems: Respiratory system, Immune system
Combine with: Without knowing the specific ingredients in Formula 571, it is not possible to suggest synergistic supplements.
Possible side effects: Studies reported somewhat more mild side effects than placebo, including rash in children.
Supplement Facts
Echinacea/Goldenseal Complex 450 mg
| Echinacea/Goldenseal Complex | 450 mg | † |
Other ingredients: Vegetable Cellulose, Gelatin, Vegetable Magnesium Stearate, Silica.
Directions: Suggested Use: Take 1 to 3 capsules three times daily with water.
Label source: NIH label database · Report a label change
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Where to Buy
DC · Earthturns · Reverseagelab
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Members OnlyThe highest ranked for the same goal
Graded November 3, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.
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