Vitamin C

The Vitamin C Brightening Serum by Advanced Clinicals is a topical skincare product formulated to improve skin brightness and support antioxidant defense. Despite its name, vitamin C and ferulic acid were not detected in the ingredient analysis, raising concerns about formulation integrity and efficacy. The product falls short of delivering clinically relevant concentrations of key active ingredients necessary for visible skin benefits.

Gold C® is a high-dose vitamin C supplement providing 1,000 mg per serving, formulated to support immune function, antioxidant defense, and collagen synthesis. The dose aligns with clinically studied levels shown to reduce the severity and duration of respiratory infections, particularly in individuals under physical stress or with low baseline vitamin C status.

CollagenUP® is a marine collagen peptide supplement designed to support skin and joint health. The primary ingredient, hydrolyzed marine collagen peptides (5 g per serving), is supported by hyaluronic acid and vitamin C to enhance collagen synthesis and tissue hydration. While the collagen dose is below typical clinical levels, it is formulated for daily use as part of a broader nutritional strategy.

This supplement delivers 1000 mg of creatine monohydrate per serving, the most extensively researched and effective form of creatine for enhancing high-intensity exercise performance, muscle strength, and lean mass gains. The addition of a small amount of vitamin C provides antioxidant support but does not significantly contribute to the primary performance-focused benefits.

This supplement delivers a high-dose of elemental iron (29 mg) as the primary active ingredient, formulated with cofactors such as vitamin C, riboflavin, copper, and biotin to support iron metabolism and red blood cell formation. The dose of iron is within the therapeutic range for treating iron deficiency, particularly in at-risk populations such as women of reproductive age and pregnant individuals.

Anti-Alcohol Complex is a dietary supplement formulated to support liver health, antioxidant defense, and metabolic recovery in individuals with alcohol use or exposure. The formula features high-dose N-acetyl-L-cysteine (NAC) and benfotiamine as primary ingredients, both of which are clinically studied for mitigating alcohol-related oxidative stress and thiamine deficiency. These are supported by antioxidants like vitamin C, selenium, and glutathione precursors to enhance detoxification and cellular protection.

This supplement delivers high-dose vitamin D (25µg/1000 IU) as a primary ingredient, supported by a full B-complex, vitamins C and E. The formulation is designed to support immune function, metabolic health, and antioxidant defense, with clinically relevant dosing of key micronutrients.

This supplement combines Cordyceps militaris powder with two strains of Bifidobacterium animalis subsp. lactis (CECT8145 and B420) in a solid beverage format. The formulation is designed to support immune function, gut health, and metabolic balance, with Cordyceps militaris as the primary active ingredient based on product naming and traditional use.

This multivitamin formulation delivers essential vitamins at moderate doses, with vitamin D3, vitamin A, and B-complex vitamins as primary contributors to nutritional support. The inclusion of clinically relevant forms such as D3 (cholecalciferol) and methylfolate-capable dosing suggests a focus on bioavailability and metabolic utility.

This multivitamin provides a comprehensive blend of essential vitamins at doses aligned with recommended dietary allowances and evidence-based clinical ranges. Vitamin D, B12, and folate are included at levels shown to support immune, neurological, and cardiovascular health, particularly in at-risk populations.

This multivitamin supplement from Nestlé provides clinically relevant doses of vitamin D and calcium as primary nutrients, supporting bone and immune health. Vitamin D (12 mcg) aligns with therapeutic dosing for insufficiency, while calcium (350 mg) contributes meaningfully to daily requirements. Other vitamins and minerals are included at supportive levels, enhancing overall micronutrient intake without targeting specific deficiencies.