SKU: STC

Stellar C™

Immune and Collagen Support*

Features vitamin C and plant bioflavonoids to promote healthy immune function and antioxidant status.* May also help support normal collagen production.*

Rich in vitamin C (from a mixture of ascorbic acid and acerola fruit) and plant bioflavonoids (hesperidin, rutin, and quercetin).


• Promotes optimal vitamin C status*
• Supports immune health*
• Helps promote normal collagen production*
• Promotes antioxidant status*
• Supports healthy inflammatory responses*

Recommended Use: Take 1 capsule per day or as directed by your health-care practitioner.

Vitamin C and bioflavonoids for immune and antioxidant support*

Vitamin C and bioflavonoids function synergistically and naturally occur in nature together, such as in acerola or citrus fruit. The inclusion of bioflavonoids in this product helps the body properly absorb and use vitamin C, as well as helping vitamin C mitigate the adverse effects of oxidative stress.*

Designs for Health

Terms & Conditions

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* 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.

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The Designs for Health Spotlight™ functional wellness tests are not diagnostic and are not eligible for coverage under Medicare, Medicaid, or medical insurance. DFH Spotlight testing must be ordered or authorized by a qualified health-care provider registered with DFH. Please reach out directly to your practitioner to express your interest in any of the Spotlight tests. Spotlight test kits are not available for purchase or shipping in New York or the U.S. territories.

††U.S.A. Functional Medicine MDs, DOs, NDs, DCs, and Nutrition Professionals surveyed in 2025 for Designs for Health.

¹Sawada D, Kawai T, Nishida K, Kuwano Y, Fujiwara S, Rokutan K. Daily intake of Lactobacillus gasseri CP2305 improves mental, physical, and sleep quality among Japanese medical students enrolled in a cadaver dissection course. J Funct Foods. 2017;31:188-197. doi:10.1016/j.jff.2017.01.042.

²Keystone commensal strains based on the HACK index. 8x comparison based on five keystone strains (up to 24% combined abundance) vs. single-strain Akkermansia  products (~3%). Percentages reflect typical abundance in healthy adult microbiomes per published research. Individual colonization varies.