--- title: "One A Day: search popularity in the United States" description: "One A Day makes multivitamins, including prenatal vitamins. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time." canonical: "https://gobrandwave.com/demand/us/brands/one-a-day" publisher: "Brandwave" --- # One A Day: search popularity in the United States One A Day makes multivitamins, including prenatal vitamins. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time. ## Key facts - **Brand**: One A Day - **Market**: United States - **Measured month**: Sep 2026 - **Share of Search among vitamin and supplement brands**: 1.4% ## Where the brand sits | Competitive set | Rank | Share of Search | Estimated monthly branded searches | | --- | --- | --- | --- | | Vitamin and supplement brands | 15 | 1.4% | 9.9K | - [Vitamin and supplement brands](/demand/us/categories/us-vitamin-brands) ## Top vitamin and supplement brands in ChatGPT and Google AI Overviews In three ChatGPT questions and two Google AI Overviews, One A Day did not appear in any of the five answers. Brands get a higher AI rank if they are mentioned earlier in the answers that list options. | Brand | AI rank | ChatGPT answers that named it | Google AI Overviews that named it | All answers that named it | | --- | --- | --- | --- | --- | | Nature Made | 1st | 3 of 3 | 0 of 2 | 3 of 5 | | Thorne | 2nd | 2 of 3 | 0 of 2 | 2 of 5 | | Nordic Naturals | 3rd | 1 of 3 | 0 of 2 | 1 of 5 | | AG1 | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | Pure Encapsulations | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | Seed | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | MaryRuth's | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | Ritual | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | Vital Proteins | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | Centrum | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | Garden of Life | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | Olly | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | HUM Nutrition | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | New Chapter | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | One A Day | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | ## Every AI answer about vitamin and supplement brands - Asked ChatGPT "Which vitamin brand should I buy?": 1. Nature Made, 2. Thorne - Asked ChatGPT "What are the most trusted supplement brands?": 1. Thorne, 2. Nature Made, 3. Nordic Naturals - Asked ChatGPT "What is the best multivitamin?": 1. Nature Made - Searched Google, AI Overview "vitamins": named none of the brands we track - Searched Google, AI Overview "supplements": named none of the brands we track Not named in any answer: AG1, Pure Encapsulations, Seed, MaryRuth's, Ritual, Vital Proteins, Centrum, Garden of Life, Olly, HUM Nutrition, New Chapter and One A Day. Brands are listed in the order each answer named them. The answers were collected in United States on October 26, 2026. ## How has branded search demand for One A Day changed in the United States over the last 12 months? - Across the 12 months ending September 2026, estimated monthly branded searches for One A Day in the United States held steady at 9.9K. - Across the 12 months ending September 2026, One A Day fell from 14th to 15th among vitamin and supplement brands in the United States. ## How did search popularity change for United States vitamin and supplement brands in September 2026? - In September 2026, Seed gained share of searches among vitamin and supplement brands in the United States, from 9.3% to 12.4%. - In September 2026, MaryRuth's gained share of searches among vitamin and supplement brands in the United States, from 7.6% to 8.3%. - In September 2026, Nordic Naturals gained share of searches among vitamin and supplement brands in the United States, from 6.2% to 6.8%. - In September 2026, AG1 lost share of searches among vitamin and supplement brands in the United States, from 20.7% to 18.6%. - In September 2026, Thorne lost share of searches among vitamin and supplement brands in the United States, from 17% to 15.1%. - In September 2026, Pure Encapsulations lost share of searches among vitamin and supplement brands in the United States, from 13.8% to 12.4%. ## Historical estimated branded-search demand | Month | Competitive set | Estimated monthly branded searches | Share of Search | Rank | | --- | --- | --- | --- | --- | | Oct 2025 | Vitamin and supplement brands | 9.9K | 1.3% | 14 | | Nov 2025 | Vitamin and supplement brands | 9.9K | 1.3% | 14 | | Dec 2025 | Vitamin and supplement brands | 9.9K | 1.2% | 14 | | Jan 2026 | Vitamin and supplement brands | 12.1K | 1.1% | 14 | | Feb 2026 | Vitamin and supplement brands | 9.9K | 1.1% | 14 | | Mar 2026 | Vitamin and supplement brands | 9.9K | 1% | 14 | | Apr 2026 | Vitamin and supplement brands | 9.9K | 1.1% | 14 | | May 2026 | Vitamin and supplement brands | 9.9K | 1.2% | 14 | | Jun 2026 | Vitamin and supplement brands | 9.9K | 1.3% | 15 | | Jul 2026 | Vitamin and supplement brands | 9.9K | 1.3% | 15 | | Aug 2026 | Vitamin and supplement brands | 12.1K | 1.5% | 14 | | Sep 2026 | Vitamin and supplement brands | 9.9K | 1.4% | 15 | ## How are One A Day’s branded searches counted? Brandwave collects information about searches that people make online using One A Day’s name. When viewed over time, estimated search volumes for this branded term can be used to understand whether interest in the brand is growing, holding steady, or fading. - “one a day vitamins” ## Which vitamin and supplement brands compete with One A Day? - [AG1](/demand/us/brands/ag1) - [Thorne](/demand/us/brands/thorne) - [Pure Encapsulations](/demand/us/brands/pure-encapsulations) - [Seed](/demand/us/brands/seed-health) - [MaryRuth's](/demand/us/brands/maryruths) - [Nordic Naturals](/demand/us/brands/nordic-naturals) - [Ritual](/demand/us/brands/ritual) - [Vital Proteins](/demand/us/brands/vital-proteins) - [Nature Made](/demand/us/brands/nature-made) - [Centrum](/demand/us/brands/centrum): Head-to-head: /demand/us/compare/centrum-vs-one-a-day - [Garden of Life](/demand/us/brands/garden-of-life): Head-to-head: /demand/us/compare/garden-of-life-vs-one-a-day - [Olly](/demand/us/brands/olly): Head-to-head: /demand/us/compare/olly-vs-one-a-day - [HUM Nutrition](/demand/us/brands/hum-nutrition): Head-to-head: /demand/us/compare/hum-nutrition-vs-one-a-day - [New Chapter](/demand/us/brands/new-chapter): Head-to-head: /demand/us/compare/new-chapter-vs-one-a-day ## Methodology - [How is the Brand Demand Index measured?](/demand/methodology): Where the figures come from, what they compare, and how they may be reused. ## Cite this page Brandwave. "One A Day: search popularity in the United States". https://gobrandwave.com/demand/us/brands/one-a-day This page is also available as HTML at https://gobrandwave.com/demand/us/brands/one-a-day. Brandwave publishes an index of its Markdown pages at https://gobrandwave.com/llms.txt.