Listing confidence

Criteria

Retailer verification

25 pointsRetailer, direct purchase URL, brand and product identity

Label information

30 pointsIngredient, amount per serving, frequency, quantity and dosage form

Product identity

15 pointsVerified product image and retailer image domain

Sales record

15 pointsRating availability and review-count range

Data validation

15 pointsPrice, amount, rating range and linked categories

Grades

Grade A

98–100 points

Grade B

95–97 points

Grade C

90–94 points

Grade D

0–89 points

Not included in the score

• Product efficacy or disease-treatment claims
• Individual safety or suitability
• How high a marketplace rating is
• Unverified independent testing or certification

Method sources