Herbal Medicines — Compendium
A practical, clinically aware overview of herbal medicine: history, classifications, preparations, safety, and a broad catalog of botanicals across traditions. Use responsibly and with clinician guidance.
1) History & Traditions
Herbal medicine (phytotherapy) spans prehistory through TCM and Ayurveda to modern phytopharmacology, with monasteries, Renaissance herbals, and contemporary research shaping today’s practice. Key classical sources include Ebers Papyrus, De Materia Medica, Shennong Bencao Jing, and Charaka Samhita. See PDF for an accessible narrative. Primary: Bailey R. Gwyn, 2025; plus standard herbal texts.
2) How We Classify Herbs
| By therapeutic action | Immune support (echinacea, elderberry), anti‑inflammatory (turmeric, boswellia), digestive (peppermint, ginger), adaptogens (ashwagandha, rhodiola), sedatives (valerian, chamomile), cardiometabolic (hawthorn, garlic), hepatoprotective (milk thistle). |
|---|---|
| By body system | GI (peppermint, fennel), CNS (lavender, lemon balm), Respiratory (thyme, mullein), GU (cranberry, nettle), Skin (aloe, calendula), Immune (elderberry), Endocrine (cinnamon, fenugreek). |
| By plant part | Leaves (sage, rosemary), roots (ginseng, valerian, burdock), bark (white willow), flowers (chamomile, lavender), seeds/fruits (milk thistle, black cumin), fungi (reishi, cordyceps), algae (spirulina). |
| By preparation | Infusions/teas, decoctions, tinctures/extracts, glycerites, syrups, powders/capsules, topical salves/creams, poultices, essential oils (aromatherapy), hydrosols. |
Classification & preparation concepts summarized from the PDF and standard practice references.
3) Preparation & Dosing
| Infusions/Teas | Leaves/flowers steeped in hot water (e.g., chamomile for sleep, peppermint for dyspepsia). |
|---|---|
| Decoctions | Hard materials (roots/bark) simmered longer (e.g., ginger, cinnamon). |
| Tinctures/Extracts | Hydroalcoholic extracts for standardized dosing (e.g., echinacea, valerian). |
| Capsules/Tablets | Powdered herb or standardized extract (e.g., ginseng, ginkgo). |
| Topicals | Arnica salves for bruises; calendula creams for minor skin irritation. |
| Essential Oils | Concentrated volatiles for aromatherapy/topical use (lavender, tea tree). Not for ingestion unless guided by qualified clinicians. |
Form choice drives potency and safety. Quality and standardization vary by manufacturer.
4) Safety, Interactions & Quality
| Common interactions | Anticoagulants (↑ bleeding with ginkgo/garlic), antidepressants & many drugs (St. John’s wort induces metabolism), sedatives (valerian+kava additivity). See NCCIH safety/interaction digests. |
|---|---|
| Who should avoid | Pregnancy/lactation (varies), children (dose‑dependent), hepatic/renal disease (kava, comfrey risks), surgery (stop bleeding‑risk herbs pre‑op). |
| Quality signals | Reputable brands, lot tracing, CoAs, third‑party programs (e.g., USP Verified), AHPA/USP standards, GMPs, appropriate species identification, standardized extracts when needed. |
| Evidence tiers | Monographs (e.g., WHO, ESCOP), RCTs/meta‑analyses, traditional use with plausibility, case series; always balance benefit vs. risk and drug interactions. |
Safety basics adapted from NCCIH; quality frameworks summarized from USP/AHPA guidance.
5) Herbal Catalog — A Broad Survey
| Immune & Respiratory | Echinacea, Elderberry, Andrographis, Astragalus, Thyme, Mullein, Oregano, Licorice (short‑term), Isatis, Pelargonium. |
|---|---|
| Inflammation & Pain | Turmeric/Curcumin, Boswellia, White Willow Bark, Devil’s Claw, Ginger, Arnica (topical), Corydalis. |
| Digestive | Peppermint, Fennel, Ginger, Chamomile, Dandelion, Artichoke, Slippery Elm, Marshmallow Root, Psyllium, Senna (short‑term), Aloe (latex caution). |
| Hepatic & Detox | Milk Thistle (silymarin), Schisandra, Dandelion root, Burdock, Turmeric. |
| Cardiometabolic | Hawthorn, Garlic, Cinnamon, Berberine‑containing herbs (goldenseal, barberry — drug interaction caution), Hibiscus, Olive leaf. |
| CNS / Mood & Sleep | Valerian, Passionflower, Lemon Balm, Lavender, Skullcap, Ashwagandha, Rhodiola, St. John’s Wort (major interactions), Kava (hepatotoxicity reports). |
| Endocrine & Metabolic | Fenugreek, Bitter Melon, Gymnema, Holy Basil, Ginseng (Panax), Inositol (botanical‑adjacent), Nigella (black seed). |
| Women’s Health | Chasteberry (Vitex), Black Cohosh, Red Clover (isoflavones), Evening Primrose (GLA), Raspberry leaf. |
| Urinary & Men’s Health | Cranberry, Uva‑Ursi (short course), Nettle leaf, Saw Palmetto (mixed evidence), Pumpkin seed. |
| Skin & Topicals | Aloe, Calendula, Tea Tree (topical), Witch Hazel, Comfrey (topical only — PA risk), Gotu Kola. |
| Fungi (Medicinal Mushrooms) | Reishi, Lion’s Mane, Cordyceps, Shiitake, Maitake, Chaga (variable quality/contaminants concern). |
| Adaptogens & Tonics | Ashwagandha, Rhodiola, Ginseng (Asian/American), Eleuthero, Schisandra, Holy Basil (Tulsi). |
| Antimicrobial / GI | Garlic, Oregano oil (diluted), Berberine herbs, Cinnamon, Clove, Thyme; balance microbiome impact and mucosal tolerance. |
| Circulation & Cognition | Ginkgo (bleeding risk), Rosemary, Sage, Bacopa (Ayurveda). |
| Other Notables | Yarrow, Nettle root, Calendula, Rosemary, Sage — culinary herbs often carry clinically relevant constituents. |
This catalog is illustrative, not exhaustive, and emphasizes common, studied, and traditionally significant botanicals across systems.
6) Cannabis (MMJ)
Medical cannabis has unique pharmacology (phytocannabinoids, terpenes) and regulatory frameworks distinct from dietary supplements. Evidence spans pain, spasticity, chemotherapy‑induced nausea, and more; interactions (e.g., CNS depressants) and driving impairment warrant caution.
Selected References
- Bailey R. Gwyn. Herbal Medicines (PDF), 2025 — history, classifications, preparations, and safety overview.
- NCCIH (NIH): Safety & herb–drug interactions digests — practical guidance for patients and clinicians.
- USP & AHPA: quality/standardization frameworks for botanicals and supplements.
Important Safety Note
Information here is educational. Herbs can interact with medications and medical conditions. Consult a qualified clinician before starting or stopping any herbal product, especially if pregnant, nursing, scheduled for surgery, or managing chronic disease.