Supplement Brands Make Health Claims. Their Websites Don't Back Them Up.

eCommerce & Retail · 209 sites audited · March 22, 2026

AISO Score

AEO

SEO

Readability

Engagement

The State of Supplements / Health Products Websites

Someone asks Google AI: "What's the best magnesium supplement for sleep?" Your product has thousands of five-star reviews. But your website lacks the structured data AI needs to recommend you. Across 209 supplement and health product sites, the average AISO score is 56/100. SEO averages 87. AEO lands at 39.

Readability scores 60, and engagement sits at 47. A total of 24% of sites fall below 50. Supplement sites often prioritize flashy design over clear, trustworthy content.

Schema markup is absent from 33% of supplement sites. Without it, AI engines cannot verify product claims, ingredients, or certifications. Trust is everything in supplements. Your website structure should reflect that.

Why This Matters for Supplements / Health Products

Health product ecommerce is defined as the online sale of dietary supplements, vitamins, and wellness products. This industry faces extra scrutiny from both regulators and search algorithms due to health claims.

Google classifies supplement content as YMYL (Your Money or Your Life). This means your site faces higher quality standards. Pages without clear sourcing, proper structure, and accessible design get ranked lower. AI engines are even stricter. They only cite sources they can verify.

E-E-A-T refers to Experience, Expertise, Authoritativeness, and Trustworthiness. For supplement brands, this means showing credentials, linking to research, and writing content that a medical professional would find accurate.

Supplement brands that fail to structure their websites for trust lose ground to competitors who do.

Key Findings

24%

Score Below 50

33%

No Schema Markup

19%

No Open Graph Tags

39/100

Avg AI Engine Score

Key Takeaways

•
YMYL standards apply to all supplement content, demanding higher quality than typical ecommerce.
•
Trust signals are missing on most supplement sites, including certifications, lab results, and sourcing details.
•
AEO scores are very low because product pages lack FAQ sections and direct answer formatting.
•
Schema markup is rare despite its importance for product verification by AI systems.
•
Readability needs work as ingredient explanations use scientific jargon without plain-language definitions.
•
Accessibility violations exclude customers with disabilities from completing purchases.

Common Mistakes in Supplements / Health Products Websites

Health claims without sourcing — Stating benefits without linking to studies or citing research triggers quality filters.
No ingredient schema — AI engines cannot parse supplement facts from an image. Use structured data for ingredients.
Dense scientific text — Long paragraphs of medical terminology drive away both readers and search algorithms.
Missing certifications on product pages — GMP, NSF, or third-party testing badges should be visible and machine-readable.
No FAQ about safety or dosage — Shoppers search these questions constantly. Your site should answer them.

How to Improve Your Supplements / Health Products Website

Add Product schema with supplement-specific fields. Include ingredients, dosage, certifications, and manufacturer details.
Write a plain-language ingredient explainer. For each active ingredient, state what it does, the dose, and any relevant research.
Build FAQ sections for every product. Cover dosage, side effects, interactions, and who should not take the product.
Display certifications prominently. Show GMP, NSF, or third-party test results on each product page with alt text.
Cite sources for all health claims. Link to published studies or official health guidelines. AI engines verify claims before citing them.

Dimension Breakdown

AI Engine (AEO) (30%)

SEO (20%)

Readability (25%)

Engagement (25%)

Score Distribution

AISO Score Ranges

0-9

10-19

20-29

30-39

40-49

50-59

60-69

70-79

80-89

90-99

Grade Distribution

0 (0%)

14 (7%)

67 (32%)

77 (37%)

51 (24%)

Frequently Asked Questions

What is an AISO score?

An AISO score is defined as a 0-to-100 rating that measures how well a website performs across SEO, readability, engagement, AEO, and accessibility. It reflects visibility to both traditional search and AI engines.

What is AEO?

AEO refers to Answer Engine Optimization. It means formatting your website content so AI tools like ChatGPT and Google AI Overview can read and recommend your products.

Why are supplement websites held to higher standards?

Google classifies health and supplement content as YMYL (Your Money or Your Life). These pages face stricter quality checks because inaccurate information could harm someone's health.

What schema should supplement brands use?

Use Product schema with ingredient lists, dosage information, brand, price, availability, and any certifications. Add FAQPage schema for product Q&A sections.

How do AI engines evaluate supplement brands?

AI engines look for trust signals: cited research, clear ingredient data, certifications, and direct answers to health questions. Marketing claims without evidence get skipped.

What is E-E-A-T and why does it matter for supplements?

E-E-A-T stands for Experience, Expertise, Authoritativeness, and Trustworthiness. Google uses these factors to rank health content. Supplement sites need expert-reviewed content and visible credentials.

How can I improve my supplement site's readability?

Define scientific terms in plain language. Use short sentences. Break ingredient lists into scannable sections. Write at an 8th grade reading level.

What accessibility issues affect supplement sites?

Common problems include supplement facts displayed only as images without alt text, small font sizes on dosage instructions, and poor color contrast on product labels.

All 209 Audited Sites

Domains are partially blurred. Scores range from 0 to 100.

#	Domain	AISO	Grade	AEO	SEO	Read.	Eng.
1	pur****.com	76	B	75	89	85	57
2	robin*********.com	75	B	63	96	84	64
3	simpleeno***************.com	73	B	50	100	94	56
4	sunl*****.com	73	B	63	100	82	53
5	leanki**********.com	73	B	68	99	75	57
6	swanso*********.com	72	B	56	98	88	55
7	alaskap************.com	71	B	58	87	78	65
8	loca*****.vitaminshoppe.com	71	B	56	87	90	59
9	impactn***********.com	71	B	40	92	95	67
10	solutio************.com	71	B	63	93	80	53
11	vita*******.com	71	B	69	100	64	59
12	apex*****.com	70	B	46	97	86	63
13	sprin********.com	70	B	55	99	79	54
14	nutra********.com	70	B	48	98	84	59
15	actnat**********.com	69	C	58	78	85	59
16	natur*********.com	69	C	51	100	80	56
17	thenut***********.com	69	C	54	78	91	57
18	planet*********.com	68	C	38	92	87	64
19	derm*******.com	68	C	53	90	76	61
20	nutri*********.com	68	C	66	98	54	59
21	heritage*************.com	68	C	58	95	77	51
22	dcnu*******.com	68	C	48	95	81	57
23	monarchwell******************.com	67	C	48	94	76	59
24	riord********.org	67	C	48	97	80	51
25	wvto*****.com	67	C	38	97	93	53
26	allab********.com	66	C	55	97	84	38
27	natur********.com	66	C	35	95	89	57
28	medici*********.com	66	C	40	95	87	52
29	willia**********.com	66	C	48	94	85	46
30	pharmso***********.com	65	C	36	95	80	59
31	thesyn***********.com	65	C	50	100	80	38
32	intermou**************.com	65	C	60	99	40	68
33	proheal*************.com	65	C	46	90	78	53
34	coastalpha****************.com	65	C	42	94	71	62
35	yourhea************.com	65	C	40	92	90	49
36	steuar**********.com	65	C	52	97	79	42
37	vita*****.com	65	C	66	90	77	30
38	wayne********.com	65	C	30	95	97	50
39	maste*******.com	65	C	52	72	74	64
40	ath*****.co	64	C	47	70	91	54
41	botanic***********.com	64	C	61	87	62	53
42	bozema**********.com	64	C	35	90	79	61
43	vegasdis**************.net	64	C	44	94	91	37
44	hampton************.com	64	C	38	77	84	63
45	ccn***.com	64	C	30	92	94	54
46	clarit***********.com	64	C	61	83	78	37
47	nutr******.com	63	C	65	99	39	57
48	vrafor*********.com	63	C	38	100	62	65
49	wholeheal**************.com	63	C	43	83	91	43
50	ne***.coop	63	C	40	95	79	48
51	vch****.com	63	C	30	98	87	50
52	standa*********.com	63	C	52	99	62	47
53	nutriti*************.com	63	C	30	98	80	56
54	sweetgr***********.com	63	C	58	98	49	53
55	vitali*********.com	63	C	60	86	71	40
56	catal********.com	62	C	48	99	64	48
57	campbel***********.com	62	C	40	95	77	46
58	belca********.com	62	C	48	95	50	64
59	ofallo**********.com	62	C	42	99	76	42
60	natura***********.com	62	C	48	99	83	30
61	cornerst**************.com	62	C	48	77	79	51
62	voxnu*******.com	62	C	50	100	67	40
63	nutri*******.com	62	C	47	72	82	52
64	aznut********.com	61	C	40	80	84	47
65	jinh*******.com	61	C	40	83	72	59
66	hsm*****.com	61	C	25	100	78	57
67	arn*****.com	61	C	62	93	38	59
68	ac***.com	61	C	30	95	71	59
69	bal****.com	61	C	53	91	50	57
70	c**.com	61	C	42	85	67	59
71	amer*****.com	61	C	35	82	81	54
72	total*********.com	61	C	38	95	66	57
73	pur****.com	60	C	52	100	49	47
74	tnkh*****.net	60	C	25	95	88	47
75	noname*********.com	60	C	40	90	84	35
76	vital********.com	60	C	53	94	60	42
77	ncnut********.com	60	C	40	87	77	47
78	dak*****.com	60	C	35	80	77	56
79	rx***.com	60	C	43	85	70	50
80	medi******.com	60	C	38	100	69	45
81	citydr**********.com	60	C	47	84	71	45
82	avantem************.com	59	D	40	94	69	45
83	fameh*********.com	59	D	60	100	16	67
84	bus*****.oxfordms.com	59	D	40	83	74	47
85	nut*****.com	59	D	38	88	80	40
86	healthspa***************.com	59	D	30	95	66	59
87	wyoming***********.org	59	D	48	77	83	35
88	thevita***********.com	59	D	40	90	61	56
89	bal***.com	59	D	28	84	83	53
90	emera*******.com	58	D	58	85	43	52
91	goodnut*************.com	58	D	35	89	72	47
92	mik****.net	58	D	25	89	87	42
93	puren********.co	58	D	38	98	60	46
94	orthomol**************.com	58	D	40	94	48	62
95	vest******.com	58	D	58	98	26	58
96	vitam*********.com	58	D	25	72	88	57
97	smit*****.com	58	D	47	73	83	35
98	biova********.com	58	D	48	70	50	67
99	firstprior****************.com	58	D	30	95	79	40
100	sto***.gnc.com	57	D	20	97	69	59
101	matsun*********.com	57	D	30	100	46	64
102	summitw************.com	57	D	40	100	35	64
103	eagle*******.com	57	D	33	90	59	57
104	perform***********.com	57	D	40	75	65	55
105	kyn****.com	57	D	35	60	90	48
106	conq*****.com	57	D	28	77	87	45
107	madei*******.org	57	D	38	82	71	47
108	yello********.com	57	D	30	99	61	51
109	southcount******************.com	57	D	46	97	44	52
110	healthn***********.com	57	D	30	84	89	35
111	pharmaceu****************.com	56	D	70	80	37	37
112	gmp****.com	56	D	37	100	48	53
113	valle********.com	56	D	37	83	70	45
114	health**********.com	56	D	35	93	84	25
115	winu*******.com	56	D	48	94	49	42
116	scco******.com	56	D	43	89	49	51
117	studio***********.com	56	D	48	92	31	62
118	nov*****.com	55	D	30	95	60	47
119	bgnutr***********.com	55	D	30	77	82	40
120	theapo*********.com	55	D	40	88	51	51
121	granite*************.com	55	D	38	67	78	42
122	smp*****.com	55	D	28	94	72	40
123	city*****.com	55	D	48	95	38	47
124	askhe********.com	55	D	20	85	83	45
125	canyo*********.com	54	D	30	93	64	40
126	solution**************.com	54	D	60	85	44	32
127	i**.usana.com	54	D	37	85	54	48
128	nutr*****.com	54	D	43	84	58	40
129	hal***.com	54	D	30	75	59	59
130	soli*****.com	53	D	40	70	70	37
131	bus*****.nkychamber.com	53	D	25	78	80	40
132	montana************.com	53	D	48	80	54	37
133	wellnessp**************.com	53	D	35	95	47	47
134	sele*******.com	53	D	43	74	50	52
135	nutr*****.biz	53	D	25	95	53	52
136	clarks**********.com	53	D	35	80	69	36
137	blue*******.com	52	D	30	97	43	50
138	sunsou*********.com	52	D	25	79	77	38
139	nutra*********.com	52	D	43	89	37	48
140	mountainh**************.com	52	D	35	70	94	15
141	alaskas***********.com	51	D	20	99	58	44
142	ph***.com	51	D	30	99	30	57
143	simp*******.net	51	D	56	90	30	36
144	pharma**********.com	51	D	35	65	78	30
145	cyan*****.com	51	D	38	67	58	45
146	natur*********.com	51	D	40	99	34	42
147	relian*********.com	51	D	40	84	41	47
148	carolinain*****************.com	51	D	35	90	54	37
149	jwnut********.com	51	D	20	93	47	57
150	wbb*****.com	51	D	48	94	29	42
151	greenemou**************.com	51	D	18	83	83	32
152	phar******.com	50	D	52	85	23	47
153	akfami**********.com	50	D	20	87	75	30
154	ally*****.com	50	D	23	49	100	35
155	vita*****.com	50	D	20	100	38	59
156	bimini*********.com	50	D	35	82	44	47
157	abasteck*************.com	50	D	25	84	65	37
158	ganne********.com	50	D	40	86	65	18
159	florid***********.com	49	F	30	80	58	37
160	altahea***********.com	49	F	20	61	80	42
161	asimply*************.com	49	F	40	75	60	28
162	explod*********.com	49	F	53	85	10	56
163	powel*********.com	49	F	35	73	52	42
164	mypay*********.com	48	F	35	89	35	42
165	inw***.com	48	F	48	88	10	54
166	makers*********.com	48	F	20	100	35	52
167	grapevineh*****************.com	48	F	35	95	27	47
168	scfut*********.com	48	F	28	73	68	30
169	earths***********.com	48	F	30	100	32	43
170	newgen***********.com	48	F	35	85	32	51
171	willings*************.com	47	F	30	100	32	40
172	blb*****.com	47	F	30	99	10	64
173	nutri*********.com	47	F	35	60	59	37
174	ci***.com	47	F	40	100	20	40
175	thevitami***************.com	47	F	35	68	60	30
176	garners***********.com	47	F	40	52	72	26
177	form*****.com	47	F	38	72	60	25
178	davi*******.com	47	F	25	99	37	42
179	dominan*************.com	47	F	25	80	38	54
180	pioneer************.com	46	F	33	77	37	47
181	nutrition***************.com	46	F	28	58	79	26
182	kenn*******.com	46	F	40	72	37	42
183	nutrisp************.com	46	F	40	98	10	46
184	clarkprof****************.com	46	F	37	90	10	58
185	synbio*********.com	46	F	25	45	76	40
186	eve****.com	46	F	30	97	31	38
187	wal****.com	46	F	25	45	86	30
188	pres******.com	45	F	20	90	30	52
189	w**.siouxfallschamber.com	45	F	25	81	38	47
190	midwest*************.com	44	F	25	81	43	40
191	smk-******.com	44	F	42	70	11	57
192	fl***.org	43	F	25	75	50	32
193	command************.com	43	F	30	84	31	37
194	plazal**********.com	43	F	48	95	10	30
195	novita*********.com	42	F	46	70	10	47
196	med*****.com	41	F	35	75	15	45
197	mar***.com	40	F	15	78	41	37
198	respect*************.com	40	F	30	95	10	37
199	niem*******.com	39	F	30	85	10	42
200	bus*****.chandlerchamber.com	39	F	25	70	20	51
201	essenti***********.com	39	F	20	95	10	47
202	paramount****************.com	39	F	20	92	10	49
203	ahfv*******.com	39	F	20	93	10	47
204	terryna************.com	38	F	25	83	10	46
205	onl***.freshmartpr.com	38	F	20	25	88	21
206	noraa*********.com	33	F	18	73	10	40
207	w**.srichamber.com	32	F	15	72	10	42
208	nas*****.com	31	F	30	20	52	18
209	natures*************.com	30	F	20	72	10	27

Methodology

Each website was scored using AISO Studio's production scoring engine across four dimensions:

AEO (30%) — AI Engine Optimization: direct answer format, FAQ patterns, structured content, citation signals, topical authority
SEO (20%) — Title tags, meta descriptions, heading structure, links, images, keyword optimization
Readability (25%) — Flesch reading ease with normalized scoring, sentence complexity, audience appropriateness
Engagement (25%) — Content hooks, calls to action, questions, lists, quotes, emphasis, paragraph variety

209 sites collected across US states using geographic search queries. Scores reflect the state of each website at time of audit.

How Does YOUR Supplements / Health Products Website Score?

The average supplements / health products website scores 56/100. Get a free audit to see where you stand and how to improve your AI search readiness.

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