You’ve chosen an herb.
You’ve opened a new page in your materia medica.
Then you search for the plant online.
Within minutes, you may have dozens of tabs open, each telling you what the herb is “good for,” how people have traditionally used it, what compounds it contains, what a study supposedly found, or how to prepare it. Some sources may even offer completely contradictory safety information.
So, what belongs in your materia medica?
A useful approach isn’t to collect as many facts as possible. It’s to learn how to answer a few better questions:
- What exactly am I researching?
- Where did this information come from?
- What kind of evidence is it?
- Does the source support the claim?
- What safety questions remain?
- Can I find this source again?
Here’s a calmer way to approach your research.
Educational note: This guide is about researching and organizing herbal information. It doesn’t provide medical advice, diagnosis, treatment, dosage recommendations, or individualized herbal recommendations. Herbal products may cause side effects and interact with medications. Evidence about their effectiveness and safety also varies considerably between products and herbs. NCCIH
Before You Research: Don’t Start With “What Is This Herb Good For?”
It’s one of the easiest searches to type.
But it can also create a research problem.
Search for:
“What is [herb] good for?”
And you may receive a long list of claims involving completely different:
- Conditions
- Traditions
- Plant parts
- Preparations
- Populations
- Levels of evidence
Instead, begin with a more useful question:
What do I want to understand about this plant?
For example:
- What is its correct botanical identity?
- Which plant part is traditionally used?
- How has the plant historically been described?
- What herbal actions do herbal references associate with it?
- What preparations are discussed?
- What human research exists?
- What safety information has been reported?
You don’t need to answer every question in one sitting.
Choose one.
Step 1: Identify the Plant Before Researching Its Uses
Start with the plant’s identity.
Record its:
- Common name
- Botanical name
- Plant family
- Plant part
This may sound basic, but it gives the rest of your research a reliable starting point.
The NIH Office of Dietary Supplements explains that botanists use Latin binomial nomenclature, consisting of a genus and specific epithet, to identify plant species. NIH ODS
That’s useful because common names aren’t always precise enough for careful research.
If you’re unsure about botanical nomenclature, an authoritative botanical database can help you verify plant names.
Kew Science’s Plants of the World Online allows you to search botanical information by scientific name, common name, family, genus, or species.
For your materia medica, begin with:
Common name: __________
Botanical name: __________
Family: __________
Plant part: __________
Once you’ve established the plant’s identity, you can begin investigating it more confidently.
Step 2: Ask One Research Question
Instead of asking:
Tell me everything about chamomile.
Try something more focused:
What plant parts are discussed in authoritative references on chamomile?
Or:
What safety concerns have been documented for chamomile?
Or:
What clinical research exists for this particular use?
A focused question makes it easier to decide whether a source is relevant.
I like to put this at the top of each research session:
TODAY’S QUESTION
Remember, everything you find doesn’t need to go into your materia medica.
If it doesn’t help answer today’s question, you can leave it for another day.
Step 3: Use More Than One Type of Source
A good materia medica doesn’t need to rely on a single “perfect” website.
Different sources answer different questions.
Botanical Databases
Useful for researching:
- Plant identity
- Scientific names
- Synonyms
- Taxonomy
- Distribution
- Botanical context
For example, Kew’s Plants of the World Online provides a searchable global database of plant names and botanical information.
Government and Institutional Health Resources
Useful for investigating:
- Scientific research
- Safety
- Supplements
- Adverse effects
- Known or suspected interactions
Two helpful starting points are NCCIH’s Dietary and Herbal Supplements resources and the NIH Office of Dietary Supplements’ botanical fact sheets.
These resources can help you investigate health-related claims and safety questions using institutional information.
Scientific Literature
Useful when you’re investigating a specific research question.
Scientific literature may include:
- Laboratory studies
- Animal studies
- Observational studies
- Clinical trials
- Reviews
- Systematic reviews
These types of evidence aren’t interchangeable.
A cell experiment isn’t a human clinical trial.
One small trial isn’t equivalent to a systematic review.
And even a systematic review needs to be understood in the context of the studies it includes.
Herbal Textbooks and Educational Resources
These can help you understand:
- Traditional uses
- Herbal terminology
- Preparations
- Historical context
- How herbalists have organized knowledge about a plant
But always record the source.
Don’t let:
“My herbal book says…”
Eventually become:
“Science proves…”
Unless you’ve checked the scientific evidence supporting that claim.
Step 4: Identify What Kind of Information You’re Reading
This is one of the most important habits in the Calm Herbalist system.
When you find an interesting statement, label the type of information it represents.
TRADITION
Information describing historical or traditional use.
HERBAL PRACTICE
Information describing how contemporary herbal practitioners or educational traditions discuss a plant.
RESEARCH
Information derived from a study or body of scientific literature.
SAFETY
Information concerning adverse effects, contraindications, interactions, or other risks.
PERSONAL OBSERVATION
Something you’ve observed yourself.
UNKNOWN
Information whose original source you haven’t established.
“Unknown” is a useful category.
It reminds you:
Don’t treat this statement as an established fact yet.
Step 5: Trace Important Claims Back to Their Source
Imagine an article says:
“Research shows that Herb X supports Y.”
Don’t stop at the words “research shows.”
Ask:
Which research?
Does the article cite a study?
Can you locate it?
What did the researchers investigate?
Was the research conducted:
- In cells?
- In animals?
- In humans?
How many participants were involved?
What preparation was studied?
What outcome was measured?
Did the study test the broad claim you’re reading?
This is where herbal information can become distorted.
A narrow study finding gets summarized.
The summary gets simplified.
Another website repeats it.
Pinterest compresses it into six words.
Eventually:
“Researchers observed X under these conditions.”
Becomes:
“This herb fixes Y.”
Your materia medica should help prevent that distortion rather than repeat it.
Step 6: Record the Exact Research Question
Suppose you find a scientific paper.
Before recording its conclusion, ask:
What question was the study trying to answer?
Then record:
Population: Who or what was studied?
Intervention: What preparation or product was tested?
Comparison: What was it compared with?
Outcome: What did the researchers measure?
Duration: How long did the study last?
Result: What was observed?
Limitations: What prevents the findings from answering a broader question?
You don’t need to conduct a formal academic critical appraisal every time you read a study.
This simple structure can help you avoid many common overgeneralizations.
Step 7: Pay Attention to the Preparation
This deserves its own research field.
An herb might appear in sources as:
- Tea
- Infusion
- Decoction
- Tincture
- Powder
- Capsule
- Standardized extract
- Oil
- Another preparation
Don’t assume that research on one preparation automatically applies to every other form.
NCCIH cautions that commercially available supplements can differ in important ways from the products tested in research studies. NCCIH
So, record two separate details:
PREPARATION STUDIED
PREPARATION DISCUSSED IN MY SOURCE
That distinction can substantially improve the accuracy of your research notes.
Step 8: Look for Evidence That Disagrees
Research becomes more useful when you stop asking:
Can I find something that supports this?
And start asking:
What does the broader evidence say?
If one source makes an impressive claim, look for:
- Systematic reviews
- Other clinical trials
- Contradictory findings
- Safety concerns
- Evidence that the claimed effect hasn’t been established
The amount of scientific evidence available for dietary supplements varies widely. NCCIH notes that some have substantial information available, while others have very little. NCCIH
So:
“I couldn’t find good evidence.”
Can be a useful research result.
And:
“Evidence is mixed.”
Can be a perfectly reasonable materia medica note.
You don’t need every research question to end with certainty.
Step 9: Investigate Safety Separately
Don’t assume you’ve fully researched an herb simply because you’ve investigated its potential uses.
Create a separate safety search.
Look for information about:
- Reported adverse effects
- Medication interactions
- Contraindications or cautions
- Pregnancy or breastfeeding considerations
- Children and other populations where evidence may be limited
- Product quality or contamination
- Areas of uncertainty
NCCIH notes that dietary supplements may interact with medications and that many supplements haven’t been tested in pregnant people, nursing mothers, or children. It also cautions that product contents can sometimes differ from what’s stated on the label. NCCIH
There’s another important distinction:
Don’t turn every possible interaction into a proven one.
NCCIH’s professional review of herb-drug interactions explains that many proposed interactions are based on indirect evidence, while well-designed clinical interaction studies remain limited.
Some interactions, however, are better documented. For example, St. John’s wort has documented clinically significant interactions with several medications. NCCIH
Your notes might therefore say:
Documented interaction
Or:
Potential interaction: Evidence uncertain
Rather than treating those statements as equivalent.
Step 10: Keep Product Claims Separate From Plant Research
This distinction becomes especially important when researching commercial herbal products.
Research on a botanical species doesn’t automatically establish that every product containing that herb has the same:
- Identity
- Concentration
- Purity
- Preparation
- Dose
- Effect
NCCIH cautions that supplements sold in stores and online may differ from the products tested in research. NCCIH
If you’re researching a commercial supplement, create a separate section:
PRODUCT
Brand: __________
Product: __________
Ingredients: __________
Preparation or extract: __________
Label claims: __________
Independent evidence for this exact product: __________
This helps you keep evidence about the plant separate from marketing claims about a specific product.
Step 11: Save Enough Information to Find the Source Again
This is where research notes often fall apart.
You discover something useful and write:
“Possible interaction. Check.”
Six months later, you wonder:
Check where?
Instead, record:
- Title
- Author
- Organization or journal
- Publication date
- URL or DOI
- Page number, if relevant
- Date accessed
- What the source helped you understand
- What still needs checking
You don’t necessarily need perfect academic citation formatting.
You need traceability.
Can your future self find the source again?
If yes, your system is working.
Free Herbal Study Source Tracker
This is exactly why we created the next piece of the Calm Herbalist system.
Stop Losing Track of Where You Learned It
The Free Herbal Study Source Tracker gives you dedicated space to record:
- Herb / Topic
- Source
- Author / Organization
- Source Type
- URL / Reference
- Why I Saved This
- Need to Verify?
- Return To
It also includes space for deeper source notes and a review checklist.
FIND → CHECK → RECORD → RETURN
[GET THE FREE HERBAL STUDY SOURCE TRACKER →]
Free • 5 printable pages • Beginner-friendly
Step 12: Write What the Source Says Before Writing What You Think It Means
This small habit can significantly improve your research notes.
Create two separate fields.
WHAT THE SOURCE SAYS
MY NOTES / QUESTIONS
Why separate them?
Because your interpretation may change as you learn.
Six months later, you might realize that your original summary overstated what the source said.
If you’ve preserved the reference and kept the source’s information separate from your interpretation, you can return to it and check.
Step 13: Record Uncertainty
Your materia medica doesn’t need to pretend that everything is settled.
Create a vocabulary for uncertainty.
Use phrases such as:
- Evidence appears limited.
- Evidence is mixed.
- Human evidence not yet found.
- Traditional use: Research not checked.
- Safety information needs verification.
- Sources disagree.
- Preparation differs from the one studied.
- Original source not located.
- Question remains open.
These are valuable research notes.
Leaving a field blank isn’t the only way to represent something you don’t know.
Step 14: Know When to Stop Researching
There will always be another tab.
Another paper.
Another book.
Another opinion.
But a research session needs an ending.
Try this rule:
Stop when you can answer today’s question well enough to record what you know, what supports it, and what remains uncertain.
Then close the tabs.
Update your materia medica.
Record your next question.
Return another day.
The goal isn’t:
KNOW EVERYTHING ABOUT THE HERB.
It’s:
KNOW WHAT YOU KNOW AND WHERE IT CAME FROM.
The Calm Herbalist Research Method
The Calm Herbalist Research Method brings these habits together into ten repeatable steps.
1. IDENTIFY
Which plant and plant part are you researching?
↓
2. QUESTION
What exactly do you want to understand?
↓
3. FIND
Locate appropriate sources.
↓
4. CLASSIFY
Is the information based on tradition, herbal practice, research, safety evidence, or personal observation?
↓
5. CHECK
Does the source support the claim?
↓
6. COMPARE
What do other relevant sources say?
↓
7. SAFETY
Investigate risks and uncertainty separately.
↓
8. RECORD
Save the information and its source.
↓
9. QUESTION AGAIN
What remains unclear?
↓
10. RETURN
Update your materia medica as you learn.
This gives The Calm Herbalist a consistent approach to researching, recording, and revisiting herbal information.
A Simple Source Hierarchy Without Expecting One Source to Do Everything
Beginners often ask:
What’s the best source for researching herbs?
There isn’t one source that answers every question.
Instead, match the source to the information you’re looking for.
| Question | Useful starting point |
|---|---|
| Is this the correct plant name? | Botanical database |
| What is its historical or traditional context? | Appropriate historical, ethnobotanical, or herbal sources |
| What does modern herbal education say? | Reputable herbal textbooks and educational resources |
| Has a specific claim been studied? | Scientific literature |
| What safety evidence exists? | Government and institutional resources, alongside scientific literature |
| What does this product claim? | Product label or manufacturer |
| Is the product claim independently supported? | Independent scientific sources |
This is more useful than simply telling readers:
“Always trust Source X.”
Research Red Flags
Pause when you encounter claims such as:
“This herb cures…”
“Scientists proved…”
With no study cited.
“Used for thousands of years, therefore proven…”
“100% safe because it’s natural…”
“Doctors don’t want you to know…”
Other warning signs include:
- A long list of health claims without sources
- A commercial product page presented as independent research
- A study on one extract used to justify every preparation of a plant
- An animal or laboratory study described as though its findings had already been demonstrated in humans
These warning signs don’t automatically tell you everything about the underlying claim.
They tell you something important:
Check more carefully.
What If Two Reliable Sources Disagree?
Don’t immediately choose the source you prefer.
Record the disagreement.
Then investigate why the sources might differ.
Perhaps:
- They were published at different times.
- One considered newer research.
- They use different standards.
- They’re discussing different preparations.
- They’re discussing different populations.
- They’re describing different levels of evidence.
- The evidence genuinely remains uncertain.
Write:
SOURCES DISAGREE
Source A: __________
Source B: __________
Possible reason: __________
Need to investigate: __________
Contradiction isn’t necessarily a research failure.
Sometimes it’s the most important thing you’ve learned.
Turn Your Research Into a Materia Medica Entry
Once your research session is complete, move the useful information into your permanent herb record.
A simple structure is:
Plant Identity
↓
Plant Part
↓
Traditional Use
↓
Herbal Actions
↓
Preparations
↓
Evidence
↓
Safety
↓
Sources
↓
Questions
If you haven’t built your materia medica yet, start with our cornerstone guide:
[How to Start a Materia Medica: A Beginner’s Step-by-Step Guide →]
Want the Structure Already Built?
If you’d prefer not to design every plant record yourself, explore the:
Beginner Materia Medica Builder
STUDY → RECORD → REVIEW
The Builder gives your individual herb research an organized place to live.
The two Calm Herbalist tools work together:
SOURCE TRACKER
Where did I learn this?
↓
MATERIA MEDICA BUILDER
What am I learning about this plant?
EXPLORE THE BEGINNER MATERIA MEDICA BUILDER: $9 →
Frequently Asked Questions
Where should I start when researching an herb?
Start by confirming which plant you’re researching, including its botanical name and the relevant plant part. Then choose one specific question instead of trying to research everything at once.
Why should I use the botanical name?
Scientific names help distinguish plant species more precisely than common names alone.
The NIH Office of Dietary Supplements explains botanical binomial nomenclature, while databases such as Kew’s Plants of the World Online allow you to search scientific names and taxonomy. NIH ODS
Is a blog a reliable herbal source?
A blog can point you toward useful information, but you should evaluate who wrote it, which sources it cites, what type of claim it makes, and whether important claims can be traced to primary or authoritative sources.
Don’t judge reliability by website format alone.
Is traditional use scientific evidence?
No. Traditional-use information and scientific evidence answer different questions.
Both can be recorded in herbal study, but they should be clearly labeled rather than treated as interchangeable.
Does one scientific study prove an herb works?
A single study generally answers a narrower question involving a particular design, preparation, population, and outcome.
Consider the broader evidence before turning one finding into a universal claim.
Where can I check herbal supplement safety?
NCCIH and the NIH Office of Dietary Supplements provide consumer and professional resources on herbs, botanicals, and dietary supplements. NCCIH
Can herbs interact with medications?
Yes, interactions are possible.
However, the strength of evidence varies substantially depending on the herb and medication. Some interactions are well documented, while many proposed interactions have limited or indirect evidence. NCCIH
What if I can’t find good research?
Record that.
“Good human evidence not found” or “Evidence appears limited” is more useful than filling the gap with unsupported certainty.
How many sources do I need?
There isn’t a universal number.
Use enough appropriate sources to answer your specific question and identify important disagreements or uncertainties.
Quality, relevance, and traceability matter more than collecting an arbitrary number.
New to Herbal Research? Start Small.
If you’re just beginning your materia medica, it’s easy to feel like you need to understand everything about an herb before you can write anything down.
You don’t.
You don’t need to read dozens of studies, understand every herbal term, or fill every section of your plant record on the first day.
You only need a place to begin and a way to keep track of what you’re learning.
Start with one plant. Choose one question. Find one useful source.
Then record what the source says, where you found it, and what you still want to investigate.
That’s how your materia medica begins to grow, one carefully recorded discovery at a time.
Your Next Step: Save Your First Source
The Free Herbal Study Source Tracker helps you keep your research organized from the beginning.
With five printable pages, you’ll have space to record your sources, notes, questions, and anything you need to verify later.
GET THE FREE HERBAL STUDY SOURCE TRACKER →
Free • 5 printable pages • Beginner-friendly
Once you’ve started collecting reliable information, the Beginner Materia Medica Builder gives you a structured place to organize what you’ve learned about each plant.
EXPLORE THE BEGINNER MATERIA MEDICA BUILDER: $9 →
You don’t have to complete your materia medica today.