Dietary Vitamins and Supplements | Parse

Dietary Vitamins and Supplements in AI answers

Data as of Oct 15, 2026Based on 158 AI responsesReviewed by Dimitry Apollonsky

AI summary

NSF International holds a narrow lead over USP–NF, with both certifiers pointed to for verifying ingredient purity and label accuracy rather than specific retail formulations. When shoppers ask for science-backed weight loss aids, the usual answer shifts entirely to Caffeine.

Most-mentioned brands

Rank and Mentioned in · since Jul 6

#	Brand	Recommended for	Mentioned in
1	NSF International 28% third-party verification to confirm purity, potency, and absence of harmful contaminants	third-party verification to confirm purity, potency, and absence of harmful contaminants	28%
2	USP–NF 27% independent quality seals ensuring finished vitamins match label claims and standards	independent quality seals ensuring finished vitamins match label claims and standards	27%
3	ConsumerLab 25% independent laboratory testing verifying commercial supplement purity and active ingredient levels	independent laboratory testing verifying commercial supplement purity and active ingredient levels	25%
4	Caffeine 19% studied ingredient recommended for modest thermogenic support and fat oxidation	studied ingredient recommended for modest thermogenic support and fat oxidation	19%
5	Thorne 18% tested premium daily formulas favored for quality and strict manufacturing	tested premium daily formulas favored for quality and strict manufacturing	18%
6	green tea extract 15% catechins and EGCG cited for minor increases in energy expenditure	catechins and EGCG cited for minor increases in energy expenditure	15%
7	Nature Made 13%		13%
8	Nordic Naturals 13% high-quality natural formulations for supporting overall daily nutritional wellness	high-quality natural formulations for supporting overall daily nutritional wellness	13%
9	Psyllium Fiber 11% soluble dietary fiber pointed to for satiety and digestive support	soluble dietary fiber pointed to for satiety and digestive support	11%
10	Pure Encapsulations 11%		11%
11	Life Extension 8%		8%
12	Garden of Life 7% raw, organic, and whole-food based dietary supplement options	raw, organic, and whole-food based dietary supplement options	7%
13	NOW Foods 7%		7%
14	NSF Certified for SportNSF International product line 6% athletic testing screens ensuring products are free of banned substances	athletic testing screens ensuring products are free of banned substances	6%
15	Alli 6%		6%
16	Informed Sport 6%		6%
17	Berberine 6%		6%
18	USP VerifiedUSP–NF product line 4%		4%
19	Wegovy 4%		4%
20	ZepboundEli Lilly and Company product line 3%		3%
21	garcinia cambogia 3%		3%
22	American Academy of Pediatrics 3%		3%
23	Ozempic 3%		3%
24	Informed ChoiceInformed Sport product line 3%		3%
25	Contrave 3%		3%
26	HealthMatch 2%		2%
27	MegaFood 2%		2%
28	Ritual 2%		2%
29	TirzepatideEli Lilly and Company product line 2%		2%
30	Qsymia 2%		2%
31	Liquid I.V.1%		1%
32	1st Phorm 1%		1%
33	DripDrop 1%		1%
34	Metagenics 1%		1%
35	Garden of Life Dr. FormulatedGarden of Life product line 1%		1%
36	Seed 1%		1%
37	New ChapterOwned by Procter & Gamble 1%		1%
38	Designs for Health 1%		1%
39	Semaglutide 1%		1%
40	Probiotics 1%		1%
41	Curcuminoids 1%		1%
42	KSM66 1%		1%
43	Legion Athletics 1%		1%
44	National Science Foundation 1%		1%
45	21st Century 1%		1%
46	Kirkland SignatureCostco product line 1%		1%
47	Phentermine 1%		1%
48	Sensoril 1%		1%
49	Xenical 1%		1%
50	Costco 1%		1%
51	Transparent Labs MultivitaminTransparent Labs product line 1%		1%
52	Natural Factors 1%		1%
53	Jarrow Formulas 1%		1%
54	Centrum 1%		1%
55	Doctor's Best 1%		1%
56	The Vitamin Shoppe 1%		1%
57	Physician's Choice 1%		1%
58	Inessa 1%		1%
59	Pure Hawaiian Spirulina 1%		1%
60	Vital Proteins Collagen PeptidesVital Proteins product line 1%		1%
61	raspberry ketones 1%		1%

Recommendations by AI engine

ChatGPT SearchGoogle AI Mode

Widest split: green tea extract, 12% on ChatGPT Search and 19% on Google AI Mode.

Mentioned in on each AI engine, by brand
Brand	ChatGPT Search	Google AI Mode
NSF International	25%	31%
USP–NF	28%	25%
ConsumerLab	25%	24%
Caffeine	20%	17%
Thorne	16%	20%
green tea extract	12%	19%
Nature Made	12%	15%
Nordic Naturals	11%	15%
Psyllium Fiber	13%	9%
Pure Encapsulations	8%	13%

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