Inclusion Criteria:

• Participants must meet all of the following criteria:

  • Male or female adults aged 35 to 55 years.
  • Generally healthy as determined by medical history, physical examination, and screening assessments.
  • Body Mass Index (BMI) between 18.5 and 29.9 kg/m².
  • Willing and able to provide written informed consent.
  • Willing to maintain their usual diet, physical activity, and lifestyle throughout the study period.
  • Willing to avoid the use of other antioxidant, anti-aging, or nutritional supplements during the study period unless approved by the investigator.
  • Able and willing to comply with all study procedures and scheduled visits.

Exclusion Criteria:

• Participants meeting any of the following criteria will be excluded:

  • History of clinically significant cardiovascular, hepatic, renal, gastrointestinal, endocrine, neurological, or psychiatric disease.
  • Current diagnosis of diabetes mellitus requiring medication.
  • Active inflammatory or autoimmune disease.
  • History of malignant disease within the previous five years.
  • Pregnancy, breastfeeding, or planning pregnancy during the study period.
  • Known allergy or hypersensitivity to ergothioneine or any ingredient of the study product.
  • Use of antioxidant supplements, anti-aging supplements, or investigational products within 30 days before enrollment.
  • Current smoker or history of heavy alcohol consumption.
  • Participation in another clinical trial within the previous 30 days.
  • Any medical condition or laboratory abnormality that, in the opinion of the investigator, may interfere with study participation or interpretation of study results.