The 10 Fastest Vitamins and Supplements Ecommerce Sites
(July 2026) - real-user mobile speed from Google CrUX, 28-day window
| Rank | Brand | CWV | LCP | INP | CLS |
|---|---|---|---|---|---|
| 1 | Vitamin World | PASS | 1.4s | 118ms | 0.00 |
| 2 | Vitacost | PASS | 1.7s | 107ms | 0.02 |
| 3 | Advocare | PASS | 2.0s | 145ms | 0.08 |
| 4 | PureFormulas | PASS | 2.3s | 138ms | 0.01 |
| 5 | Holland & Barrett Retail Limited | FAIL | 2.2s | 261ms | 0.07 |
| 6 | Iherb, Inc. | FAIL | 2.2s | 331ms | 0.00 |
| 7 | Swanson | FAIL | 2.5s | 210ms | 0.00 |
| 8 | GNC | FAIL | 2.7s | 411ms | 0.00 |
| 9 | Vitamin Shoppe | FAIL | 4.0s | 237ms | 0.59 |
| 10 | Puritans NBTY | FAIL | 4.1s | 279ms | 0.03 |
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