← Scan another product

C4 smart energy

5 established essential nutrients

Graded on the nutrient adequacy of 5 labeled ingredients.

B

68out of 100Grade B

Research evidence score

Graded on 5 established essential nutrients · led by Vitamin D

How the ingredients work together

Known interactions from published nutrition research — separate from the evidence grade.

Vitamin D + CalciumWork together

Vitamin D is required for efficient intestinal calcium absorption — the classic bone-health pairing.

Compare with another product

Ingredient breakdown

B

Vitamin DSupports bone health and immune function

Research: Established essential nutrientEvidence strength: Established essential nutrient — extensively researched

B

CalciumSupports bone density and muscle contraction

Research: Established essential nutrientEvidence strength: Established essential nutrient — extensively researched

B

NiacinamideReduces hyperpigmentation and improves skin barrier

Research: Established essential nutrientEvidence strength: Established essential nutrient — extensively researched

B

CyanocobalaminGeneral health support

Research: Established essential nutrientEvidence strength: Established essential nutrient — extensively researched

B

Vitamin B12Supports energy and nerve function

Research: Established essential nutrientEvidence strength: Established essential nutrient — extensively researched

This summary describes only the ingredients and the research behind them — it is not a judgment of the product or its marketing. Grades reflect the weight of published evidence cross-referenced against 350M+ research papers. How we grade →

Check what's really in your products

Scan any label and see what the research actually says.