citedhealth

Python client for the CITED Health evidence-based supplement API. Query 188 ingredients, 84 conditions, 323 evidence links, and 6,197 peer-reviewed papers across 6 health domains — every health claim backed by peer-reviewed research.

CITED Health covers 6 specialized health sites: HairCited (hair & scalp health), SleepCited (sleep quality), GutCited (digestive health), ImmuneCited (immune support), BrainCited (cognitive health), and the CITED Health hub — all powered by a unified evidence grading engine.

Try it live at citedhealth.com — evidence grades for supplements like Biotin, Melatonin, and Ashwagandha.

Table of Contents

• Install
• Quick Start
• Command-Line Interface
• What You Can Do
  • Search Supplement Ingredients
  • Look Up Evidence Grades
  • Browse Health Conditions
  • Explore Glossary Terms
  • Read Health Guides
  • Search PubMed Papers
• Async Client
• Evidence Grades
• API Reference
• Learn More About Evidence-Based Supplements
• Also Available
• License

Install

pip install citedhealth

With CLI support:

pip install citedhealth[cli]

Quick Start

from citedhealth import CitedHealth

client = CitedHealth()

# Search ingredients by name
ingredients = client.search_ingredients("biotin")
print(ingredients[0].name)  # "Biotin"

# Get evidence grade for an ingredient-condition pair
evidence = client.get_evidence("biotin", "nutritional-deficiency-hair-loss")
print(f"Grade: {evidence.grade} — {evidence.grade_label}")
# Grade: A — Strong Evidence

# Browse health conditions
conditions = client.list_conditions(is_featured=True)
for c in conditions:
    print(f"{c.name}: {c.prevalence}")

# Look up glossary terms
terms = client.list_glossary(category="vitamins")
for t in terms:
    print(f"{t.term}: {t.short_definition}")

# Search PubMed papers
papers = client.search_papers("biotin hair loss")
print(f"{len(papers)} papers found")

Command-Line Interface

Install with the cli extra for terminal access:

pip install citedhealth[cli]

Search ingredients

citedhealth ingredients biotin

Get evidence grade for an ingredient-condition pair

citedhealth evidence biotin nutritional-deficiency-hair-loss

Look up a single ingredient

citedhealth ingredient biotin

List health conditions

citedhealth conditions
citedhealth conditions --featured
citedhealth condition hair-loss

Browse glossary terms

citedhealth glossary
citedhealth glossary --category vitamins

List health guides

citedhealth guides
citedhealth guides --category hair

Search PubMed papers

citedhealth papers --year 2024

Get a paper by PubMed ID

citedhealth paper 12345678

All commands support --json for machine-readable output:

citedhealth ingredients biotin --json
citedhealth conditions --json

What You Can Do

Search Supplement Ingredients

Find ingredients by name or keyword across 188 supplements. Each ingredient includes category, mechanism of action, recommended dosage, and available forms.

client = CitedHealth()

# Search by keyword
results = client.search_ingredients("magnesium")
for ing in results:
    print(f"{ing.name} ({ing.category}) — {', '.join(ing.forms)}")

# Get full details for a single ingredient
biotin = client.get_ingredient("biotin")
print(f"Mechanism: {biotin.mechanism}")
print(f"Dosage: {biotin.recommended_dosage}")

Look Up Evidence Grades

Every ingredient-condition pair has an A-F evidence grade calculated from peer-reviewed studies. The 323 evidence links span all 6 health domains.

# Check evidence for a specific supplement claim
evidence = client.get_evidence("melatonin", "insomnia")
print(f"Grade {evidence.grade}: {evidence.grade_label}")
print(f"Based on {evidence.total_studies} studies, {evidence.total_participants} participants")
print(f"Direction: {evidence.direction}")

Browse Health Conditions

Access 84 health conditions across 6 domains — hair loss, insomnia, IBS, immune deficiency, brain fog, and more. Each condition includes prevalence data, symptoms, and risk factors.

# List all featured conditions
conditions = client.list_conditions(is_featured=True)
for c in conditions:
    print(f"{c.name} — {c.prevalence}")
    print(f"  Symptoms: {', '.join(c.symptoms[:3])}")

# Get condition details
condition = client.get_condition("hair-loss")
print(f"Risk factors: {', '.join(condition.risk_factors)}")

Explore Glossary Terms

Browse 228 glossary terms covering supplement science, pharmacology, and nutrition terminology.

# List glossary terms by category
terms = client.list_glossary(category="vitamins")
for t in terms:
    print(f"{t.term} ({t.abbreviation}): {t.short_definition}")

# Get a specific term
term = client.get_glossary_term("bioavailability")
print(f"{term.term}: {term.definition}")

Read Health Guides

Access 50 health guides with evidence-based recommendations for supplement use.

# List all guides
guides = client.list_guides()
for g in guides:
    print(f"{g.title} [{g.category}]")

# Get full guide content
guide = client.get_guide("biotin-for-hair-growth")
print(guide.content)

Search PubMed Papers

Access 6,197 PubMed-indexed papers with citation data from Semantic Scholar.

# Search by keyword
papers = client.search_papers("vitamin D immune")
for p in papers:
    print(f"[{p.pmid}] {p.title} ({p.publication_year})")

# Filter by year
recent = client.search_papers(year=2024)
print(f"{len(recent)} papers published in 2024")

Async Client

For async applications, use AsyncCitedHealth:

import asyncio
from citedhealth import AsyncCitedHealth

async def main():
    async with AsyncCitedHealth() as client:
        # All methods available as async versions
        ingredients = await client.search_ingredients("zinc")
        conditions = await client.list_conditions(is_featured=True)
        glossary = await client.list_glossary()
        guides = await client.list_guides()
        evidence = await client.get_evidence("zinc", "immune-function")
        print(f"Grade: {evidence.grade}")

asyncio.run(main())

Evidence Grades

Grade	Label	Criteria
A	Strong Evidence	Multiple RCTs/meta-analyses, consistent positive results
B	Good Evidence	At least one RCT, mostly consistent
C	Some Evidence	Small studies, some positive signals
D	Very Early Research	In vitro, case reports, pilot studies
F	Evidence Against	<30% of studies show positive effects

API Reference

Method	Description
search_ingredients(query, category)	Search ingredients by name or category
get_ingredient(slug)	Get ingredient by slug
get_evidence(ingredient, condition)	Get evidence for an ingredient-condition pair
get_evidence_by_id(pk)	Get evidence link by ID
search_papers(query, year)	Search PubMed papers
get_paper(pmid)	Get paper by PubMed ID
list_conditions(is_featured)	List health conditions
get_condition(slug)	Get condition by slug
list_glossary(category)	List glossary terms
get_glossary_term(slug)	Get glossary term by slug
list_guides(category)	List health guides
get_guide(slug)	Get guide by slug

Full API documentation: citedhealth.com/developers/

OpenAPI spec: citedhealth.com/api/openapi.json

Learn More About Evidence-Based Supplements

• Sites: Hair Health · Sleep Health · Gut Health · Immune Health · Brain Health · Hub
• Tools: Evidence Checker · Ingredient Browser · Paper Search
• Guides: Grading Methodology · Medical Disclaimer
• API: REST API Docs · OpenAPI Spec

Also Available

Platform	Install	Link
npm	npm install citedhealth	npm
Go	go get github.com/citedhealth/citedhealth-go	pkg.go.dev
Rust	cargo add citedhealth	crates.io
Ruby	gem install citedhealth	RubyGems
MCP	uvx citedhealth-mcp	PyPI

License

MIT — see LICENSE.