Plant-based whole food Vitamin D for clean labels
Earthlight® provides Vitamin D in its natural food matrix — the only plant-sourced whole food Vitamin D commercially available. This meets growing consumer demand for plant-based, minimally processed, and clean-label nutrition without synthetic D3 (lanolin-derived) or isolated D2 ingredients. The mushroom food matrix also provides co-occurring immune-supportive beta-glucans, fiber, and antioxidants absent in isolated Vitamin D supplements.
Immune function support
Vitamin D from Earthlight® supports all aspects of immune function — innate immunity (macrophage activation, antimicrobial peptide production), adaptive immunity (T-regulatory cell differentiation, autoimmune modulation), and mucosal defense. The co-occurring mushroom beta-glucans provide additional immunomodulatory activity through Dectin-1 receptor activation, creating synergistic immune benefits beyond isolated Vitamin D.
Bone health and musculoskeletal support
Vitamin D is essential for calcium and phosphorus absorption required for bone mineralization, and for muscle function that prevents falls in aging populations. Earthlight® provides the clinically validated bone and muscle benefits of Vitamin D supplementation in a plant-based whole food format acceptable for vegan, vegetarian, and clean-label product positioning.
Vitamin D2 nuclear receptor activation and calcium homeostasis
Vitamin D2 (ergocalciferol) from Earthlight® undergoes hepatic 25-hydroxylation to 25(OH)D2, then renal 1α-hydroxylation to 1,25(OH)2D2 (calcitriol equivalent), which binds the Vitamin D nuclear receptor (VDR) to regulate expression of over 1,000 genes governing calcium absorption (TRPV6, calbindin), immune function (cathelicidin, defensins), cell differentiation, and inflammatory modulation. While D3 may achieve slightly higher 25(OH)D levels per dose, D2 provides clinically relevant vitamin D activity with equivalent supplementation at equivalent doses.
Clinical study comparing UV-treated mushroom Vitamin D2 supplementation vs. control for serum Vitamin D status improvement.
Vitamin D insufficient adults. Clinical bioavailability study.
UV-treated mushroom Vitamin D2 significantly improved serum 25(OH)D levels vs. control, with comparable bioavailability to commercial Vitamin D2 supplements. Whole food matrix well-tolerated. Provides clinically relevant Vitamin D supplementation from a plant-based whole food source.