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Condition

Allergic Diseases (General)

Allergic diseases arise when the immune system overreacts to harmless things like pollen, dust mites, or foods, releasing histamine and other chemicals that cause sneezing, itching, and swelling. Probiotics are among the best-supported supplements, with moderate evidence, and trials of one strain, Lactobacillus acidophilus L-92, found eczema symptoms eased in children and adults. Those studies were small, though, and most plant extracts have only been tested in animals or cells.

Sources: PMID 20861645; PMID 25660281

Supplements studied
7
Graded outcomes
7

Evidence by supplement

  • Strong
  • Moderate
  • Limited
  • Very limited

7 supplements

Lactobacillus acidophilus: outcomes studied for Allergic Diseases (General)
GradeOutcomeEffectSizeStudiesPeopleStudies list
Atopic Dermatitis Symptoms

Three clinical trials using the L. acidophilus L-92 strain demonstrated improvements in atopic dermatitis symptoms. A double-blind RCT in Japanese adults and a pediatric study both showed reductions in dermatitis severity scores and serum cytokine markers. A third trial demonstrated efficacy with prolonged ingestion of L-92 in adult patients.

Improves (the measure goes down)Small effect4 studies250 people
Haninjin: outcomes studied for Allergic Diseases (General)
GradeOutcomeEffectSizeStudiesPeopleStudies list
Allergic Response

In rodent models, Artemisia iwayomogi extract dose-dependently inhibited systemic anaphylactic reactions (compound 48/80-induced in ICR mice), passive cutaneous anaphylaxis (Sprague-Dawley rats), and ovalbumin-induced allergic airway inflammation (BALB/c mice). Mechanisms include mast cell stabilization via NF-kappaB/p38 MAPK inhibition, reduced histamine release, and suppression of Th2 cytokines and serum IgE. No human studies exist.

Improves (the measure goes down)Moderate effect7 studies

Chinese Hawthorn

  • Allergic Inflammation: improves
Chinese Hawthorn: outcomes studied for Allergic Diseases (General)
GradeOutcomeEffectSizeStudiesPeopleStudies list
Allergic Inflammation

Preclinical studies report that Chinese hawthorn extracts inhibit mast cell degranulation and histamine release, and reduce inflammatory cytokines via NF-κB inhibition. Evidence is limited to in vitro and animal models with no human trials.

Improves (the measure goes down)Small effect3 studies

Japanese catnip

  • Allergic Response: improves
Japanese catnip: outcomes studied for Allergic Diseases (General)
GradeOutcomeEffectSizeStudiesPeopleStudies list
Allergic Response

In IgE-stimulated RBL-2H3 mast cells, S. tenuifolia suppressed degranulation (beta-hexosaminidase release) and reduced IFN-gamma, TNF-alpha, IL-4, and IL-6 at 100 mcg/mL. In rats, the extract dose-dependently inhibited compound 48/80-induced systemic anaphylaxis and reduced plasma histamine levels. In a DNCB-induced atopic dermatitis mouse model, treatment suppressed serum IgE, TNF-alpha, and IL-6, and downregulated NF-kappaB and MAPK expression. No human data exists.

Improves (the measure goes down)Moderate effect3 studies

Studies that measured allergic response

East Indian globe thistle

  • Mast Cell Stabilization (Anti-allergic): changes; see studies
East Indian globe thistle: outcomes studied for Allergic Diseases (General)
GradeOutcomeEffectSizeStudiesPeopleStudies list
Mast Cell Stabilization (Anti-allergic)

In an animal/in vitro study, ethanol and ethyl acetate extracts of S. indicus showed 77–88% protection against mast cell degranulation induced by compound 48/80 and sheep serum, slightly exceeding the standard drug ketotifen (69–75%). Suggests potent mast cell stabilizing activity comparable to established anti-allergic agents.

Changes; see studiesModerate effect2 studies

Studies that measured mast cell stabilization (anti-allergic)

Lactosucrose

  • Allergic IgE Response: improves
Lactosucrose: outcomes studied for Allergic Diseases (General)
GradeOutcomeEffectSizeStudiesPeopleStudies list
Allergic IgE Response

In OVA-sensitized mice, dietary lactosucrose supplementation produced dose-dependent suppression of anti-ovalbumin IgE responses. Lactosucrose inhibited antigen-specific IgE and IgG1 production even after a second immunization, while splenocytes showed reduced IL-4 and IL-5 production and augmented IL-10 production, suggesting a Th1/Th2 rebalancing effect. No human data available.

Improves (the measure goes down)Moderate effect1 study

Studies that measured allergic ige response

Histidine

  • Atopic Dermatitis Symptoms: improves
Histidine: outcomes studied for Allergic Diseases (General)
GradeOutcomeEffectSizeStudiesPeopleStudies list
Atopic Dermatitis Symptoms

Limited human studies have explored histidine supplementation in atopic dermatitis, potentially related to its role in filaggrin production (a histidine-rich protein important for skin barrier function). Evidence is preliminary and insufficient for clinical recommendations.

Improves (the measure goes down)Small effect

Key findings

  • Atopic Dermatitis SymptomsLactobacillus acidophilusImproves (the measure goes down)
  • Allergic ResponseHaninjinImproves (the measure goes down)
  • Allergic InflammationChinese HawthornImproves (the measure goes down)

The Allergic Diseases General Support protocol

2 primary supplements · 7 supporting supplements

  • Quercetin500–1,000 mg daily in divided doses
  • Probiotics10–20 billion CFU multi-strain daily (Lactobacillus and Bifidobacterium strains)

See the full protocol

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The supplement graded A or B for Allergic Diseases (General). Each opens third-party tested products for that supplement.

  • Grade B

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Studies cited

76 studies from PubMed

  1. The active components of the Danshen-Shanzha herb-pair exert a protective effect on MASLD by synergistically promoting fatty acid oxidation via the activation of PPARα, Plin-5 and Plin-2.Journal of Ethnopharmacology, 2026 · PMID 41690426
  2. Phytochemical and nanoparticle-based therapeutic potential of Sphaeranthus indicus against hepatocellular carcinoma via cryptomeridiol targetingFrontiers in Oncology, 2025 · PMID 41323392
  3. A botanical extract blend of Mangifera indica and Sphaeranthus indicus combined with resistance exercise training improves muscle strength and endurance over exercise alone in young men: a randomized, blinded, placebo-controlled trialFrontiers in Nutrition, 2024 · PMID 38765822
  4. Artemisia iwayomogi herbal extract improves learning and reduces amyloid-beta burden in 5xFAD Alzheimer's disease miceGeroScience, 2024 · PMID 39433702
  5. Crataegus pinnatifida: A botanical, ethnopharmacological, phytochemical, and pharmacological overview.Journal of Ethnopharmacology, 2023 · PMID 36228891
  6. Rapid determination of chemical components and antioxidant activity of the fruit of Crataegus pinnatifida Bunge by NIRS and chemometrics.Spectrochimica Acta Part A, 2023 · PMID 36508903
  7. A proprietary blend of Sphaeranthus indicus flower head and Mangifera indica bark extracts increases muscle strength and enhances endurance in young male volunteers: a randomized, double-blinded, placebo-controlled trialFood & Nutrition Research, 2023 · PMID 36794013
  8. Development of real-time PCR based molecular markers for two medicinal herb Artemisia species A. capillaris and A. iwayomogiFood Science and Biotechnology, 2023 · PMID 36606092
  9. Protective effect of Schizonepeta tenuifolia Briq. ethanolic extract against UVB-induced skin aging and photodamage in hairless miceFrontiers in Pharmacology, 2023 · PMID 37351505
  10. Yomogin from Artemisia iwayomogi suppresses neuroinflammatory responses via MAPK inhibitionAntioxidants, 2022 · PMID 36670968
  11. Effects of 4G-beta-D-Galactosylsucrose in patients with depression: A randomized, double-blinded, placebo-controlled, parallel-group comparative study.Journal of Psychiatric Research, 2022 · PMID 35123322
  12. Spectrum-effect relationship between GC-QTOF-MS fingerprint and antioxidant, anti-inflammatory activities of Schizonepeta tenuifolia essential oilBiomedical Chromatography, 2021 · PMID 33638568
  13. Potential benefits of L. acidophilus in dyslipidemic ratsScientific Reports, 2021 · PMID 33731756
  14. Effect of a Probiotic Supplement Containing Lactobacillus Acidophilus and Bifidobacterium Animalis Lactis on Urine Oxalate in Calcium Stone Formers with Hyperoxaluria: A Randomized, Placebo-controlled, Double-blind and In-vitro TrialUrology Journal, 2021 · PMID 34129232
  15. Polyphenolic extract from Artemisia iwayomogi flowers inhibits NF-kappaB signaling in LPS-stimulated macrophagesExperimental and Therapeutic Medicine, 2020 · PMID 32104280
  16. Preventive Effect of Lactobacillus acidophilus XY27 on DSS-Induced Ulcerative Colitis in MiceDrug Design, Development and Therapy, 2020 · PMID 33376308
  17. Immune enhancing effects of Lactobacillus acidophilus on Newcastle disease vaccination in chickensComparative Immunology, Microbiology and Infectious Diseases, 2020 · PMID 32721773
  18. Lactobacillus acidophilus attenuates toxin production by Vibrio cholerae and shigella dysenteriae following intestinal epithelial cells infectionMicrobial Pathogenesis, 2020 · PMID 33010360
  19. Effects and mechanisms of Danshen-Shanzha herb-pair for atherosclerosis treatment using network pharmacology and experimental pharmacology.Journal of Ethnopharmacology, 2019 · PMID 30312741
  20. 7-hydroxyfrullanolide, isolated from Sphaeranthus indicus, inhibits colorectal cancer cell growth by p53-dependent and -independent mechanismCarcinogenesis, 2019 · PMID 30535334
  21. Schizonepeta tenuifolia inhibits collagen stimulated platelet function via suppressing MAPK and Akt signalingJournal of Biomedical Research, 2019 · PMID 30783025
  22. Immunomodulation Effects of Schizonepeta tenuifolia Briq. on the IgE-Induced Allergic Model of RBL-2H3 CellsEvidence-Based Complementary and Alternative Medicine, 2018 · PMID 29849717
  23. Primary prevention of Clostridium difficile infections with a specific probiotic combining Lactobacillus acidophilus, L. casei, and L. rhamnosus strains: assessing the evidenceThe Journal of Hospital Infection, 2018 · PMID 29702133
  24. Lactobacillus acidophilus Alleviated Salmonella-Induced Goblet Cells Loss and Colitis by Notch PathwayMolecular Nutrition & Food Research, 2018 · PMID 30198100
  25. Lactobacillus acidophilus ameliorates pain and cartilage degradation in experimental osteoarthritisImmunology Letters, 2018 · PMID 30003932
  26. Artemisia iwayomogi extract attenuates high-fat diet-induced hypertriglyceridemia in mice: potential involvement of the adiponectin-AMPK pathway and very low density lipoprotein assembly in the liverInternational Journal of Molecular Sciences, 2017 · PMID 28805698
  27. Efficacy of a standardized extract of Matricariae chamomilla L., Melissa officinalis L. and tyndallized Lactobacillus acidophilus (HA122) in infantile colic: An open randomized controlled trialNeurogastroenterology and Motility, 2017 · PMID 28665038
  28. Uromodulin-SlpA binding dictates Lactobacillus acidophilus uptake by intestinal epithelial M cellsInternational Immunology, 2017 · PMID 28992252
  29. Ethanol extract of Zhongtian hawthorn lowers serum cholesterol in mice by inhibiting transcription of 3-hydroxy-3-methylglutaryl-CoA reductase via nuclear factor-kappa B signal pathway.Experimental Biology and Medicine, 2016 · PMID 26825354
  30. Lactobacillus acidophilus Mixture in Treatment of Children Hospitalized With Acute DiarrheaClinical Pediatrics, 2016 · PMID 26581358
  31. Efficacy of prolonged ingestion of Lactobacillus acidophilus L-92 in adult patients with atopic dermatitisJournal of Dairy Science, 2016 · PMID 27108169
  32. Lactobacillus acidophilus attenuates Salmonella-induced intestinal inflammation via TGF-β signalingBMC Microbiology, 2015 · PMID 26446848
  33. The effects of Lactobacillus acidophilus as feed supplement on skin mucosal immune parameters, intestinal microbiota, stress resistance and growth performance of black swordtailFish & Shellfish Immunology, 2015 · PMID 25514375
  34. Lactobacillus acidophilus CP23 with weak immunomodulatory activity lacks anchoring structure for surface layer proteinJournal of Bioscience and Bioengineering, 2015 · PMID 25454604
  35. Crataegus pinnatifida: Chemical constituents, pharmacology, and potential applicationsMolecules, 2014 · PMID 26342172
  36. Sphaeranthus indicus (East Indian Globe Thistle) - A promising natural remedy for psoriasisJ Ethnopharmacol, 2014 · PMID 24620985
  37. Schizonepeta tenuifolia ethanol extract exerts anti-inflammatory activity through the inhibition of TLR4 signaling in lipopolysaccharide-stimulated macrophage cellsJournal of Medical Food, 2014 · PMID 24650252
  38. Lactobacillus acidophilus modulates the virulence of Clostridium difficileJournal of Dairy Science, 2014 · PMID 24856984
  39. Effects of oral administration of Lactobacillus acidophilus L-92 on the symptoms and serum cytokines of atopic dermatitis in Japanese adults: a double-blind, randomized, clinical trialInternational Archives of Allergy and Immunology, 2014 · PMID 25660281
  40. Antioxidant activity and components of a traditional Chinese medicine formula consisting of Crataegus pinnatifida and Salvia miltiorrhiza.BMC Complementary and Alternative Medicine, 2013 · PMID 23663253
  41. Sphaeranthus indicus induces apoptosis through mitochondrial-dependent pathway in HL-60 cells and exerts cytotoxic potential on several human cancer cell linesIntegrative Cancer Therapies, 2013 · PMID 22914874
  42. Artemisia iwayomogi extract attenuates high-fat diet-induced obesity by decreasing the expression of genes associated with adipogenesis in miceEvidence-Based Complementary and Alternative Medicine, 2013 · PMID 23401719
  43. Scopoletin and scopolin from Artemisia iwayomogi suppress RANKL-induced osteoclast differentiationJournal of Natural Products, 2013 · PMID 23510022
  44. Schizonepeta tenuifolia inhibits the development of atopic dermatitis in micePhytotherapy Research, 2013 · PMID 22949410
  45. Effect of Sphaeranthus indicus on cisplatin-induced nephrotoxicity in ratsPharm Biol, 2012 · PMID 22579515
  46. Effect of ethanol extract of Sphaeranthus indicus on cisplatin-induced nephrotoxicity in ratsNatural Product Research, 2012 · PMID 21790496
  47. An ethanol extract of Artemisia iwayomogi activates PPARdelta leading to activation of fatty acid oxidation in skeletal musclePLoS One, 2012 · PMID 22479450
  48. Artemisia iwayomogi aqueous extract attenuates hepatic steatosis, fibrosis, and inflammation in a rat model of chronic liver injuryJournal of Ethnopharmacology, 2012 · PMID 22265746
  49. Aqueous extract of Artemisia iwayomogi attenuates cholestatic liver fibrosis in a rat modelFood and Chemical Toxicology, 2012 · PMID 22824087
  50. Antioxidant and anti-inflammatory activities of aqueous extracts of Schizonepeta tenuifolia BriqFood and Chemical Toxicology, 2012 · PMID 22198607
  51. Decrease of blood lipids induced by Shan-Zha (fruit of Crataegus pinnatifida) is mainly related to an increase of PPARα in liver of mice fed high-fat diet.Hormone and Metabolic Research, 2011 · PMID 21823058
  52. Development of the origin and application of shanza in ancient and modern.Zhonghua Yi Shi Za Zhi, 2011 · PMID 22335842
  53. Sphaeranthus indicus attenuates testosterone induced prostatic hypertrophy in albino ratsPhytotherapy Research, 2011 · PMID 21503998
  54. Effects of oral administration of Lactobacillus acidophilus L-92 on the symptoms and serum markers of atopic dermatitis in childrenInternational Archives of Allergy and Immunology, 2011 · PMID 20861645
  55. Sphaeranthus indicus Linn.: A phytopharmacological reviewInt J Ayurveda Res, 2010 · PMID 21369402
  56. Probiotic Lactobacillus acidophilus and L. casei mix sensitize colorectal tumoral cells to 5-fluorouracil-induced apoptosisNutrition and Cancer, 2010 · PMID 20358475
  57. Mast cell stabilizing effects of Sphaeranthus indicusJournal of Ethnopharmacology, 2009 · PMID 19330926
  58. Essential oil of Artemisia iwayomogi induces apoptosis in KB cells via mitochondrial dysfunction and MAPK activationJournal of Ethnopharmacology, 2009 · PMID 19429377
  59. A carbohydrate fraction AIP1 from Artemisia iwayomogi suppresses pulmonary eosinophilia and Th2-type cytokine production in an ovalbumin-induced allergic asthma modelInternational Immunopharmacology, 2008 · PMID 18068107
  60. Application of the multiplex PCR method for discrimination of Artemisia iwayomogi from other Artemisia herbsBiological & Pharmaceutical Bulletin, 2008 · PMID 18379063
  61. Anti-inflammatory activity of Schizonepeta tenuifolia through the inhibition of MAPK phosphorylation in mouse peritoneal macrophagesAmerican Journal of Chinese Medicine, 2008 · PMID 19051342
  62. Anti-inflammatory and anti-allergic activities of Crataegus pinnatifidaJ Agric Food Chem, 2007 · PMID 21475413
  63. Cytotoxic activity of Sphaeranthus indicus extracts and 7-hydroxyfrullanolidePhytother Res, 2007 · PMID 16938399
  64. Effects of dietary lactosucrose (4G-beta-D-galactosylsucrose) on the IgE response in mice.Bioscience, Biotechnology, and Biochemistry, 2007 · PMID 17986785
  65. Inhibitory effect of Artemisia iwayomogi on immediate-type allergic reactionImmunopharmacology and Immunotoxicology, 2006 · PMID 16997791
  66. Development of SCAR marker for discrimination of Artemisia princeps and A. argyi from other Artemisia herbsBiological & Pharmaceutical Bulletin, 2006 · PMID 16595892
  67. Long-term administration of 4G-beta-D-galactosylsucrose (lactosucrose) enhances intestinal calcium absorption in young women: a randomized, placebo-controlled 96-wk study.Journal of Nutritional Science and Vitaminology, 2006 · PMID 17190104
  68. Anti-allergic effect of Artemisia iwayomogi on mast cell-mediated anaphylaxisExperimental Biology and Medicine, 2005 · PMID 15618130
  69. AIP1 from Artemisia iwayomogi suppresses thymocyte apoptosis via Fas/FasL pathway modulationBiological & Pharmaceutical Bulletin, 2005 · PMID 15863908
  70. Effect of Crataegus pinnatifida extract on blood lipids and antioxidant activity in hyperlipidemic ratsJ Ethnopharmacol, 2002 · PMID 15896829
  71. Inhibition of CCl4-induced liver fibrosis by Artemisia iwayomogiNot specified, 2000 · PMID 10933139
  72. Effect of Schizonepeta tenuifolia extract on mast cell-mediated immediate-type hypersensitivity in ratsImmunopharmacology and Immunotoxicology, 1999 · PMID 10584206
  73. Effect of 4G-beta-D-galactosylsucrose (lactosucrose) on fecal microflora in patients with chronic inflammatory bowel disease.Journal of Gastroenterology, 1996 · PMID 8808426
  74. Effects of dietary supplementation with lactosucrose (4G-beta-D-galactosylsucrose) on cecal flora, cecal metabolites, and performance in broiler chickens.Poultry Science, 1994 · PMID 7862605
  75. Effect of lactosucrose (4G-beta-D-galactosylsucrose) on fecal flora and fecal putrefactive products of cats.Journal of Veterinary Medical Science, 1993 · PMID 8513012
  76. Transmission of Lactobacillus jensenii and Lactobacillus acidophilus from mother to child at time of deliveryJournal of Clinical Microbiology, 1975 · PMID 809467