Benefits
Helps support a balanced stress response
In a single small, manufacturer-sponsored pilot RCT (Milesi 2009, n=70 healthy adults, 10 mg/day for 4 weeks), daily intake was associated with reduced perceived stress and fatigue symptoms versus placebo; this early result supports a calmer day-to-day experience but has not yet been replicated in larger independent trials.
Promotes energy and reduced fatigue
Helps reduce signs and symptoms of physical and mental fatigue, including weariness and difficulty concentrating, contributing to improved daily energy.
Supports endogenous antioxidant defense
Encourages upregulation of the body's own antioxidant enzymes—including superoxide dismutase, catalase, and glutathione peroxidase—helping the body manage oxidative stress more effectively.
Helps maintain quality of sleep
Within the pilot stress/fatigue RCT, the physical-fatigue dimension included sleep-related items (such as sleep troubles) that improved versus placebo; this reflects a sleep-fatigue sub-measure rather than a dedicated sleep study, so support for restorative rest remains preliminary.
Convenient low-dose antioxidant
Delivers the clinically studied 10 mg/day dose used in the stress/fatigue pilot RCT, fitting easily into stress, energy, and general wellness formulas alongside other actives.
Mechanism of action
Gastroprotected SOD delivery
The gliadin coating protects native melon SOD from gastric inactivation, allowing the enzyme to reach the upper gastrointestinal tract where it can interact with epithelial cells and trigger downstream signaling.
Endogenous antioxidant induction
Oral SOD B Extramel has been shown in preclinical and human studies to upregulate expression and activity of endogenous antioxidant enzymes such as SOD, catalase, and glutathione peroxidase.
HPA-axis and cortisol modulation
By reducing systemic oxidative stress, melon SOD concentrate may help blunt cortisol responses and support a more balanced HPA-axis tone during chronic stress.
Mitochondrial protection
Improved superoxide neutralization helps preserve mitochondrial membrane potential and ATP production, supporting cellular energy availability.
Clinical trials
Pilot double-blind, placebo-controlled trial, 10 mg Extramel (140 IU SOD) daily for 4 weeks
n=70 healthy adults aged 30–55 with daily stress and fatigue
Supplementation produced significant improvements over placebo in measures of perceived stress and fatigue, including performance, physical (pain, sleep troubles), cognitive (concentration, weariness), and behavioural (attitude, irritability) dimensions, supporting a benefit for everyday stress and fatigue symptoms.
Background human and preclinical studies of melon-derived SOD on antioxidant enzyme activity
Healthy adults and animal models
Oral melon SOD concentrate has been associated with increased activity of endogenous antioxidant enzymes (SOD, catalase, glutathione peroxidase), supporting its mechanism as an inducer of the body's own antioxidant defenses rather than acting solely as a direct enzyme substitute.