Research & References — InflammaShield

InflammaShield ✦ Research & References

Published peer-reviewed studies supporting each ingredient in our formula. All links go directly to PubMed (NCBI), the U.S. National Library of Medicine.

Boswellia 600mg Curcumin 585mg Ginger 585mg Amla 500mg MCT 100mg
Read this first: The studies below cover individual ingredients, not InflammaShield as a finished formula — no placebo-controlled clinical trial has been run on this product. Our own trial was small, uncontrolled, and self-reported (see the honest print on our homepage). Nothing on this page is medical advice, and these statements have not been evaluated by the FDA.

1. Curcumin Extract (95% Curcuminoids)

585 mg/serving
Clinical Range: 500–1,500 mg/day of standardized curcumin extract in human trials for arthritis and inflammation. Our 585 mg/day (one serving = 2 capsules) falls within the clinically studied range.
Meta-AnalysisEfficacy of Turmeric Extracts and Curcumin for Alleviating the Symptoms of Joint Arthritis: A Systematic Review and Meta-Analysis of Randomized Clinical Trials
Daily JW et al. J Med Food. 2016 Aug | PMID: 27533649
Dose studied: ~1,000 mg/day curcumin across 8 RCTs. Outcome: Significant reduction in pain visual analogue score (PVAS) and WOMAC scores vs. placebo (P < .00001). Concluded that turmeric extract provides scientific evidence for arthritis treatment.
RCTAn Investigation into the Effects of a Curcumin Extract (Curcugen®) on Osteoarthritis Pain of the Knee: A Randomised, Double-Blind, Placebo-Controlled Study
Lopresti AL et al. Nutrients. 2021 | PMID: 35010916
Dose studied: 500 mg twice daily (1,000 mg/day) standardized curcumin extract for 8 weeks, 101 adults with knee OA. Outcome: Significant reduction in KOOS knee pain score (P = 0.009) and numeric pain ratings (P = 0.001). 37% of curcumin participants reduced pain medication vs. 13% placebo.
RCTEfficacy and Safety of Curcumin and Its Combination with Boswellic Acid in Osteoarthritis: A Comparative, Randomized, Double-Blind, Placebo-Controlled Study
Haroyan A et al. BMC Complement Altern Med. 2018 | PMID: 29316908
Dose studied: 333 mg curcuminoids 3×/day (999 mg/day) CuraMed®; and 350 mg curcuminoids + 150 mg boswellic acid 3×/day Curamin® for 12 weeks, 201 patients. Outcome: Both preparations showed significant effects vs. placebo. The curcumin+boswellia combination was superior, confirming synergistic activity.
Meta-AnalysisCurcumin and Curcuma longa Extract for Arthritis: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
Zeng L et al. Front Immunol. 2022 | PMID: 35935936
Outcome: Curcumin and Curcuma longa extract generally improved symptoms and inflammation levels in arthritis patients. Bioavailability-enhanced formulations showed more positive effects — one reason we disclose our exact extract form (standard 95% curcuminoids) rather than hiding it inside a blend.

2. Ginger Extract (20% Gingerols)

585 mg/serving (117 mg active gingerols)
Clinical Range: 125–1,000 mg/day of ginger extract or powder in human OA trials, with the leading rheumatoid arthritis trials using 1,500 mg/day whole ginger powder (≈75 mg active gingerols). Our 585 mg/day of 20% extract sits within the studied extract range and delivers 117 mg/day active gingerols — above the active gingerol dose those RA trials provided. (Trials used whole powder; our extract matches on the active constituent, not the whole matrix.)
RCTEffects of a Ginger Extract on Knee Pain in Patients with Osteoarthritis
Altman RD, Marcussen KC. Arthritis Rheum. 2001 | PMID: 11710709
Dose studied: Standardized ginger extract (EV.EXT 77) twice daily, 261 patients with moderate-to-severe knee OA, 6 weeks. Outcome: 63% of ginger group responded vs. 50% placebo (P = 0.048). Significant reduction in knee pain on standing (24.5 mm vs. 16.4 mm; P = 0.005). Good safety profile with mostly mild GI events.
RCTEffect of Ginger Supplementation on Proinflammatory Cytokines in Older Patients with Osteoarthritis: Outcomes of a Randomized Controlled Clinical Trial
Mozaffari-Khosravi H et al. J Nutr Gerontol Geriatr. 2016 | PMID: 27559855
Dose studied: 500 mg ginger powder daily for 3 months, 120 patients with knee OA. Outcome: Both TNF-α and IL-1β decreased significantly in the ginger group vs. placebo, demonstrating anti-inflammatory cytokine modulation.
RCTA Randomized, Placebo-Controlled, Cross-Over Study of Ginger Extracts and Ibuprofen in Osteoarthritis
Bliddal H et al. Osteoarthritis Cartilage. 2000 | PMID: 10607493
Dose studied: Ginger extract vs. ibuprofen vs. placebo in hip/knee OA patients, crossover design. Outcome: Efficacy ranking: Ibuprofen > ginger extract > placebo (P < 0.00001). Demonstrated ginger extract has clinically relevant pain-relieving effects.
RCTEfficacy and Safety of Steamed Ginger Extract GGE03 in Subjects with Mild Knee Osteoarthritis
Kim JH et al. J Med Food. 2024 | PMID: 39212491
Dose studied: 480 mg/day steamed ginger extract (GGE03) for 12 weeks. Outcome: Statistically significant decreases in pain VAS scores, K-WOMAC scores, and patient global assessment vs. placebo without toxicity.

3. Boswellia Serrata Extract (65% Boswellic Acids)

600 mg/serving
Clinical Range: 600–900 mg/day of Boswellia serrata extract standardized to 60–65% total boswellic acids in human trials (meta-analyses of OA trials; Arthritis Foundation guidance runs higher, at 900–1,200 mg/day of 60% extract). Our 600 mg/day is at the clinical floor for this extract type and delivers 390 mg total boswellic acids. Note: AKBA-enriched extracts (30% AKBA) are effective at much lower doses (100–250 mg/day); ours is a 65% total-boswellic-acid extract, dosed to the evidence for that form.
RCTEfficacy and Tolerability of Boswellia serrata Extract in Treatment of Osteoarthritis of Knee — A Randomized Double Blind Placebo Controlled Trial
Kimmatkar N et al. Phytomedicine. 2003 | PMID: 12622457
Dose studied: Boswellia serrata extract for 8 weeks, 30 patients with knee OA, crossover design. Outcome: All patients receiving BSE reported decreased knee pain, increased knee flexion, and increased walking distance. Knee joint swelling decreased. Statistically significant vs. placebo and clinically relevant.
RCTA Double Blind, Randomized, Placebo Controlled Study of the Efficacy and Safety of 5-Loxin for Treatment of Osteoarthritis of the Knee
Sengupta K et al. Arthritis Res Ther. 2008 | PMID: 18667054
Dose studied: 100 mg or 250 mg daily 5-Loxin® (30% AKBA-enriched extract) for 90 days, 75 OA patients. Outcome: Both doses conferred clinically and statistically significant improvements in pain and physical function. The 250 mg dose showed significant improvement as early as 7 days. Significant reduction in synovial fluid MMP-3 (cartilage-degrading enzyme).
RCTA Pilot, Randomized, Double-Blind, Placebo-Controlled Trial to Assess the Safety and Efficacy of a Novel Boswellia serrata Extract in the Management of Osteoarthritis of the Knee
Majeed M et al. Phytother Res. 2019 | PMID: 30838706
Dose studied: Boswellin® (standardized BSE with AKBBA and BBA) for 120 days, 48 knee OA patients. Outcome: Significant improvement in physical function, reduced pain and stiffness vs. placebo. Radiographic assessment showed improved knee joint gap and reduced osteophytes. Significant reduction in hs-CRP. Longest BSE trial conducted at the time.

4. Amla Extract (Emblica officinalis, 10:1)

500 mg/serving
Clinical Range: 500–1,000 mg/day of amla extract in human trials for inflammation, oxidative stress, and lipid management. Our 500 mg/day is at the clinical floor. Honest note: the trials below used specific branded extracts standardized for tannin content; our 10:1 extract is dosed at the same milligram floor, and we verify supplier COAs before making any equivalence claims.
RCTA Pilot Clinical Study to Evaluate the Effect of Emblica officinalis Extract (Amlamax™) on Markers of Systemic Inflammation and Dyslipidemia
Antony B et al. Indian J Clin Biochem. 2008 | PMID: 23105791
Dose studied: 500 mg and 1,000 mg/day Amlamax™ (standardized to 35% galloellagi tannins) for 6 months. Outcome: Reduction in total and LDL cholesterol, enhancement of HDL cholesterol, and significant reduction in blood CRP levels (inflammation marker). Demonstrates Amla's dual action on dyslipidemia and inflammation.
RCTA Randomized, Double Blind, Placebo Controlled, Multicenter Clinical Trial to Assess the Efficacy and Safety of Emblica officinalis Extract in Patients with Dyslipidemia
Upadya H et al. BMC Complement Altern Med. 2019 | PMID: 30670010
Dose studied: 500 mg Amla extract twice daily (1,000 mg/day) for 12 weeks, 98 dyslipidemic patients. Outcome: Significant reductions in total cholesterol (P = 0.0003), triglycerides (P = 0.0003), LDL-C (P = 0.0064), and VLDL-C (P = 0.0001). 39% reduction in atherogenic index of plasma (P = 0.0177).
RCTEffects of Phyllanthus emblica Extract on Endothelial Dysfunction and Biomarkers of Oxidative Stress in Patients with Type 2 Diabetes Mellitus
Usharani P et al. Diabetes Metab Syndr Obes. 2013 | PMID: 23935377
Dose studied: 250 mg or 500 mg twice daily for 12 weeks vs. atorvastatin and placebo. Outcome: Significant improvement in endothelial function, oxidative stress biomarkers (MDA, NO, GSH), and hsCRP. Both doses performed comparably to atorvastatin 10 mg for endothelial function improvement.
RCTClinical Evaluation of Emblica Officinalis Gaertn (Amla) in Healthy Human Subjects: Health Benefits and Safety Results from a Randomized, Double-Blind, Crossover Placebo-Controlled Study
Kapoor MP et al. Contemp Clin Trials Commun. 2019 | PMID: 31890983
Dose studied: 500 mg/day Amla for 18 weeks, healthy subjects, crossover design. Outcome: Significant improvements in blood fluidity (vascular function), reduced vWF and 8-OHdG (oxidative stress markers), improved HDL and lowered LDL. No adverse events. Confirms safety and antioxidant efficacy in healthy individuals.

5. Why We Removed Black Pepper Extract (Piperine)

Removed August 2026
Our decision: Black pepper extract (piperine) was removed from InflammaShield in August 2026. The famous “2,000% absorption” claim traces to a single 1998 study whose measurement method is now known to overstate bioavailability. Newer studies using modern analytical methods have failed to replicate the effect, and piperine inhibits CYP3A4 and P-glycoprotein — the same pathways that handle roughly half of common prescription medications. We don’t put an ingredient in the capsule that we can’t defend.
Human Clinical TrialInfluence of Piperine on the Pharmacokinetics of Curcumin in Animals and Human Volunteers
Shoba G et al. Planta Med. 1998 | PMID: 9619120
The original claim: 2 g curcumin + 20 mg piperine reportedly increased curcumin “bioavailability” by 2,000%. Why we discount it: the blood samples were enzyme-treated before measurement, converting inactive conjugated metabolites back into parent curcumin — which inflates apparent bioavailability. Modern methods that measure only the active (unconjugated) form do not reproduce the result.
RCTPharmacokinetics of a Single Dose of Turmeric Curcuminoids Depends on Formulation: Results of a Human Crossover Study
Fança-Berthon P et al. J Nutr. 2021 | PMID: 33877323
Outcome: No significant difference in curcuminoid absorption between the piperine–curcuminoid combination and the standard extract alone. Piperine provided no measurable advantage.
RCTIncreasing Post-Digestive Solubility of Curcumin Is the Most Successful Strategy to Improve its Oral Bioavailability: A Randomized Cross-Over Trial
Flory S et al. Mol Nutr Food Res. 2021 | PMID: 34665507
Outcome: Solubility-based formulations (micelles, cyclodextrin complexes) significantly improved curcumin absorption; piperine was ineffective compared with curcumin alone.
RCTA Pharmacokinetic Study and Critical Reappraisal of Curcumin Formulations Enhancing Bioavailability
Kroon MAGM et al. iScience. 2025 | PMID: 40487425
Outcome: Measuring unconjugated (free) curcumin — the form that can actually enter tissues — piperine did not increase plasma levels, which stayed below 2 nM even with high-dose curcumin plus piperine. The authors concluded piperine provides no bioavailability benefit.
SafetyMedication-Interaction Concern
Piperine inhibits CYP3A4 and P-glycoprotein — pathways involved in the metabolism of statins, blood thinners, and many other common medications.
Why this matters: Even if piperine helped absorption, it would raise interaction risk for the adults most likely to take a joint formula daily. Removing it made the formula safer and simpler to defend. InflammaShield contains no piperine.

6. Organic MCT Powder (Absorption)

100 mg/serving
Role: Curcumin, boswellic acids, and gingerols are fat-soluble — they absorb with fat, not water. Dietary fat in the gut drives micelle formation — the tiny droplets that ferry fat-soluble molecules across the intestinal wall — which is why taking these compounds with food improves their absorption. That’s why this formula includes organic MCT (medium-chain triglyceride) as a fat source, and why we recommend taking InflammaShield with a meal. Honest note: the absorption benefit shown in research comes from taking these compounds with dietary fat in general — we have not run absorption testing on this specific formula.

7. Safety Research We Track Too: Curcumin & the Liver

Transparency, both directions
Why this is here: We publish the research on our ingredients in both directions — including the studies we’d rather not have to discuss. Federal post-market surveillance has linked turmeric/curcumin supplements to rare cases of acute liver injury. Here is the data, the context, and where InflammaShield stands.
Federal ReferenceTurmeric — LiverTox (NIH National Library of Medicine)
LiverTox chapter, updated 2025 | NCBI Bookshelf NBK548561
What it says: Turmeric has become the most common cause of clinically apparent herbal-related liver injury in the United States (Likelihood score A). Typical presentation: fatigue, nausea, and poor appetite progressing to dark urine and jaundice, usually 1–4 months after starting (up to 8). Liver enzymes often rise above 1,000 U/L. Most cases resolve within 1–3 months of stopping the product. Estimated incidence: roughly 1 in 10,000 to 1 in 100,000 users — rare, but real.
Case SeriesLiver Injury Associated with Turmeric — A Growing Problem: Ten Cases from the Drug-Induced Liver Injury Network (DILIN)
Halegoua-DeMarzio D, Navarro V, Ahmad J et al. Am J Med. Feb 2023;136(2):200–206 | PMID: 36252717
What it found: 10 U.S. cases since 2011 (six after 2017). Seven of ten patients carried the HLA-B*35:01 immune-gene variant — present in only about 6–7% of the population — evidence the injury is largely idiosyncratic (immune-mediated in genetically susceptible people) rather than straightforward dose toxicity. Three of seven tested products contained piperine, and LiverTox attributes most cases to high-bioavailability curcumin formulations (piperine-boosted or lipid-nanoparticle delivery), though cases with plain turmeric powder are also described.
RegulatoryEFSA Acceptable Daily Intake & International Labeling Rules
EFSA 2010 opinion (3 mg curcumin/kg body weight/day); Italy Ministry of Health decrees 2019 & 2022
Context: EFSA set an acceptable daily intake of 3 mg curcumin/kg body weight/day (≈210 mg for a 154-lb adult), derived from an animal reproductive-toxicity study — below the 500–1,500 mg/day doses used in the human trials cited on this page. After an outbreak of turmeric-associated hepatitis in 2018–19, Italy mandated warning labels on all curcuma supplements. Honest note: InflammaShield’s 585 mg curcumin extract per serving exceeds the EFSA ADI while sitting inside the range studied in human RCTs. We disclose both facts rather than pick one.
Where InflammaShield stands:
  • No piperine. The absorption booster present in several implicated products is not in this formula — and never will be (see section 5).
  • No “enhanced absorption” nanoparticle or micelle technology. LiverTox attributes most reported cases to high-bioavailability delivery systems. InflammaShield is a standard 95% curcuminoid extract, taken with food.
  • A moderate, disclosed dose. 585 mg/day — inside the range used in the clinical trials above, not a megadose.
  • Know the warning signs. Unusual fatigue, nausea, poor appetite, dark urine, or yellowing of the skin or eyes: stop any supplement and contact a doctor promptly. Outcomes are best when the product is stopped early.
  • Check with your doctor first if you have liver disease, gallbladder or bile-duct problems, take blood thinners or other medications, or are pregnant or nursing.
This section exists because silence is the industry standard, and we don’t want to be standard. None of the above is medical advice; it is a summary of public research.

✦ Combination & Synergy Studies

RCTEfficacy and Safety of Curcumin and Its Combination with Boswellic Acid in Osteoarthritis: A Comparative, Randomized, Double-Blind, Placebo-Controlled Study
Haroyan A et al. BMC Complement Altern Med. 2018 | PMID: 29316908
Dose studied: Curcumin alone (999 mg/day) vs. Curcumin + Boswellic Acid combination (1,050 mg curcumin + 450 mg boswellic acid/day) vs. placebo for 12 weeks, 201 patients. Outcome: The combination was more effective than curcumin alone. The study concluded that "combining Curcuma longa and Boswellia serrata extracts increases the efficacy of OA treatment presumably due to synergistic effects." This directly supports the multi-ingredient approach of InflammaShield.
RCTCurcuma longa and Boswellia serrata Extract Combination for Hand Osteoarthritis: An Open-Label Pre-Post Trial
Henrotin Y et al. Pharm Biol. 2022 | PMID: 36416059
Outcome: Significant decreases in pain intensity and number of painful joints over 3 months with a curcumin + boswellia combination in hand OA patients. Confirms the combination's effectiveness across different joint types.
Meta-AnalysisEfficacy of Curcumin and Boswellia for Knee Osteoarthritis: Systematic Review and Meta-Analysis
Bannuru RR et al. Semin Arthritis Rheum. 2018 | PMID: 29622343
Outcome: Both curcuminoid and boswellia formulations were statistically significantly more effective than placebo for pain relief and functional improvement in knee OA. Supports the combined use of these two key ingredients in our formula.