SCIENTIFIC BACKGROUND & REFERENCES
Ingredient and Formulation Overview
Feru-guard® is a Japanese-formulated food supplement containing ferulic acid, Garden Angelica (Angelica archangelica) extract, Vitamin C and Vitamin E. This page provides background information on selected ingredients in the Feru-guard® formulation and related published literature. Vitamin C contributes to the normal functioning of the nervous system, to normal psychological function and to the normal function of the immune system. Vitamin C works with Vitamin E to support ongoing antioxidant activity.
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Peer-Reviewed Publications
Clinical and observational studies supporting Feruguard’s formulation.
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Professional Healthcare Endorsements
Recommended by thousands of medical institutions and professionals in Japan.
FORMULATION OVERVIEW
Feru-guard® combines ferulic acid, Garden Angelica (Angelica archangelica) extract, Vitamin C and Vitamin E in a Japanese-formulated composition. Ferulic acid is a plant-derived compound found in plant materials and foods, and Garden Angelica is a botanical ingredient in the formulation. This page presents ingredient and formulation background in a technical, non-promotional format, together with selected references for general scientific context.
SELECTED INGREDIENT BACKGROUND & MECHANISMS OF ACTIONS
Ferulic Acid
Ferulic acid (FA), or 3-methoxy-4-hydroxycinnamic acid, is a phytochemical abundant in plant cell walls, particularly in cereal grains. It exhibits significant antioxidant properties, supporting the body's natural system and contributing to overall antioxidant support. FA in Feru-guard® is derived from rice bran and is commonly included in dietary supplements and cosmetics.
Direct Antioxidant Activity:
FA readily forms a resonance-stabilized phenoxy radical, enabling it to scavenge deleterious free radicals and terminate free radical chain reactions. This protects cell membranes from lipid peroxidation.
Environmental Skin Support:
FA provides antioxidant support and helps maintain healthy skin in everyday environmental conditions.
Modulation of Amyloid Precursor Protein (APP) Processing:
FA has been studied for its role in supporting healthy protein processing in brain cells, which may contribute to maintaining normal cognitive function.
Upregulation of the Nrf2/ARE Pathway:
Nrf2 Activation:
FA supports the body’s natural antioxidant processes associated with the Nrf2 pathway.
Keap1 Interaction:
Nrf2 is part of the body’s natural cellular processes. Compounds such as FA may help support its normal activity.
ARE Binding and Gene Expression:
The released Nrf2 moves into the nucleus and binds to the antioxidant response element (ARE), supporting the body’s production of antioxidant enzymes that help maintain cellular health.
Heme-Oxygenase 1 (HO-1) Induction:
One of the key enzymes supported by the Nrf2/ARE pathway is heme-oxygenase 1 (HO-1), which plays a role in the body’s natural antioxidant processes.
Improved Bioavailability:
FA is more easily absorbed into the body and stays in the blood longer than other phenolic acids.
Angelica archangelica (Garden Angelica)
Angelica archangelica (Garden Angelica) is a biennial plant from the Apiaceae family traditionally used as a dietary herb. Extracts from its roots have been used in traditional herbal practices and are included in dietary supplements supporting general well-being.
Decursin:
Also found in Garden Angelica, is a bioactive compound traditionally associated with supporting cognitive health.
Antioxidant Properties:
Angelica archangelica supports the body’s natural antioxidant processes.
Neuroprotective Effects:
Nervous Support: Extracts and isolated compounds from Angelica gigas (a related species) have been used to support brain health and overall wellness.
Vitamins C & E
Vitamin C and Vitamin E are included in specified amounts in the Feru-guard® formulation. Vitamin C contributes to the normal functioning of the nervous system, to normal psychological function, and to the normal function of the immune system. Vitamin C works with Vitamin E to support ongoing antioxidant activity.
Vitamin C contributes to:
- the normal functioning of the nervous system
- normal psychological function
- the normal function of the immune system
- the support of cells from oxidative stress
- the regeneration of the reduced form of Vitamin E
Vitamin E contributes to:
- the support of the body’s natural antioxidant processes
FORMULATION AND DAILY SERVING COMPOSITION
Each daily serving of Feru-guard® contains 223 mg of ferulic acid and 40 mg of Garden Angelica extract, together with Vitamin C and Vitamin E in specified amounts. Please refer to the product label for exact ingredient quantities, recommended daily intake, warnings and storage instructions.
Safety
Human Use:
In Japan, over 50,000 people have taken over 1.2 million packages of Feruguard, with no serious adverse events reported.
Limitations and Future Directions
While the available evidence suggests potential benefits of Feruguard for cognitive health, several limitations should be considered:
Study Design:
Some studies are open-label, which may introduce bias due to the lack of blinding and a control group.
Sample Size:
Some studies have small sample sizes, limiting the generalizability of the findings.
Further Research:
Further randomized, double-blind, placebo-controlled trials with larger samples are needed to confirm these findings and establish Feruguard as a useful treatment for MCI and related conditions. More research is also required to fully elucidate the mechanisms of action and long-term effects.
FDA Disclaimer
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Please consult with a healthcare professional before starting any new dietary supplement.
RESEARCH CONTEXT
This page provides technical background on selected ingredients contained in the Feru-guard® formulation and a limited set of publicly available references. The references included here are presented for general scientific context and are not intended to provide an exhaustive review of the literature. Some publications discuss individual ingredients rather than the Feru-guard® formulation as a whole. For product information including ingredients, recommended daily intake, warnings and storage instructions, please refer to the product label and product information section.
References
The references below are provided as background reading on selected ingredients contained in the Feru-guard® formulation. Readers seeking a fuller understanding of the published scientific and regulatory literature should consult the original sources directly.
Sigurdsson S, Gudbjarnason S (2007). Inhibition of acetyl-cholinesterase by extracts and constituents from Angelica archangelica and Geranium sylvaticum. Z Naturforsch C J Biosci, 62, 689-693.
Zduńska, K., Dana, A., & Kolodziejczak, A., Rotsztejn, H. (2018). Antioxidant Properties of Ferulic Acid and its Possible Application. Skin Pharmacology and Physiology, 31, 332–336.