Method: Ranked by the strength of human evidence (RCTs, meta-analyses, cohorts) for benefits such as lower blood pressure, cholesterol and blood sugar, less inflammation and pain, and better mood and cognition. Evidence for herbs is generally weaker and less consistent than for whole foods, and many trials use concentrated extracts rather than culinary amounts. Ranks within a tier are approximate. Lower tiers rest mostly on traditional use, lab or animal studies. All entries are plant-based.

Tier 1: Best human evidence (1-25)

1. Garlic: modest drops in blood pressure and LDL
2. Ginger: reduces nausea; eases osteoarthritis pain
3. Turmeric (curcumin): eases osteoarthritis pain; lowers inflammatory markers
4. Cinnamon: small fasting glucose reduction (prefer Ceylon; cassia has coumarin)
5. Peppermint: oil capsules reduce IBS symptoms
6. Saffron: RCTs show benefit for mild-to-moderate depression
7. Chamomile: small trials for anxiety and sleep
8. Hibiscus: lowers blood pressure
9. Fenugreek: lowers HbA1c and fasting glucose
10. Black cumin (Nigella sativa): improves lipids, glucose and BP in trials
11. Lavender (oral silexan): reduces anxiety in RCTs
12. St John's wort: effective for mild-to-moderate depression (many drug interactions)
13. Ashwagandha: reduces stress and anxiety (rare liver injury reported)
14. Psyllium husk: lowers LDL (strong RCTs)
15. Chili peppers (capsaicin): observational links to lower mortality
16. Cumin: improves lipids in small trials
17. Rosemary: cognition and mood in small trials
18. Sage: memory and glucose in small trials
19. Oregano: antimicrobial; early human data
20. Cardamom: small BP trials
21. Fennel: colic, dyspepsia, menopausal symptoms
22. Lemon balm: calmness, mood, cognition
23. Artichoke leaf: lowers cholesterol; eases dyspepsia
24. Milk thistle: liver enzyme benefits; mixed evidence
25. Tulsi (holy basil): glucose and stress in small trials

Tier 2: Good evidence (26-60)

26. Black pepper: piperine boosts curcumin absorption
27. Thyme: respiratory symptoms; polyphenols
28. Cloves: eugenol; dental and polyphenol data
29. Basil: polyphenols; small glucose data
30. Elderberry (cooked): shortens cold duration in small trials
31. Echinacea: modest effect on colds
32. Andrographis: reduces upper respiratory infection symptoms
33. Panax ginseng: fatigue and glucose; mixed
34. American ginseng: glycemic and cold-prevention data
35. Rhodiola: reduces fatigue and burnout symptoms
36. Bacopa (brahmi): memory improvement in RCTs
37. Ginkgo: cognition benefits mixed (bleeding risk)
38. Hawthorn: heart failure symptoms and BP
39. Valerian: modest sleep effect
40. Passionflower: anxiety in small trials
41. Hops: sleep and menopausal symptom data
42. Boswellia: osteoarthritis pain
43. Willow bark: low back pain (aspirin-like; avoid with aspirin allergy)
44. Feverfew: migraine prevention
45. Devil's claw: back and joint pain
46. Saw palmetto: urinary symptoms; evidence mixed
47. Nettle: urinary symptoms; allergy data
48. Olive leaf: lowers blood pressure
49. Gymnema: improves glycemic control
50. Bitter melon: modest glucose effect
51. Mulberry leaf: lowers post-meal glucose
52. Amla (Indian gooseberry): lipids and antioxidant data
53. Coriander seed: early glycemic and lipid data
54. Celery seed: blood pressure; limited data
55. Dill: lipid and glucose data
56. Parsley: flavonoids (apigenin)
57. Cilantro: antioxidants; limited human data
58. Mustard seed: glucosinolates
59. Licorice root: GI and throat benefits (raises BP; avoid with hypertension)
60. Kava: anxiety relief (liver toxicity concerns)

Tier 3: Moderate evidence (61-110)

61. Paprika: carotenoids
62. Cayenne: capsaicin; pain (topical) and metabolism
63. Sumac: lowers glucose in small trials
64. Horseradish: isothiocyanates
65. Wasabi: isothiocyanates
66. Star anise: shikimic acid, antimicrobial
67. Anise: digestive and menopausal symptoms
68. Caraway: dyspepsia relief
69. Nutmeg: polyphenols (toxic in large amounts)
70. Allspice: eugenol, polyphenols
71. Juniper berries: traditional diuretic; limited data
72. Bay leaf: small glucose and lipid data
73. Marjoram: polyphenols; small BP data
74. Tarragon: early glycemic data
75. Savory: lipid data
76. Lemongrass: antimicrobial; early lipid data
77. Galangal: anti-inflammatory compounds
78. Spearmint: cognition and hormonal data
79. Curry leaf: early glycemic data
80. Moringa: glucose and lipids in small trials
81. Triphala: gut and dental data
82. Neem: dental and glycemic data
83. Gotu kola: venous and cognitive data
84. Shatavari: menopausal symptoms; early
85. Guggul: cholesterol effects inconsistent
86. Astragalus: immune and kidney data; early
87. Schisandra: fatigue and liver data
88. Eleuthero (Siberian ginseng): fatigue; limited
89. Jiaogulan: lipid and glucose data
90. Maca: mood and libido in small trials
91. Black cohosh: menopausal symptoms; mixed
92. Red clover: isoflavones; menopausal data mixed
93. Dong quai: limited evidence
94. Evening primrose: weak evidence
95. Skullcap: early anxiety data
96. Linden flower: calming; traditional
97. Elderflower: cold symptom support
98. Rose hips: osteoarthritis pain; vitamin C
99. Marshmallow root: cough and throat soothing
100. Slippery elm: throat and bowel soothing
101. Dandelion: diuretic; limited data
102. Burdock: antioxidants; limited data
103. Chicory root: inulin prebiotic fiber
104. Red raspberry leaf: traditional; limited data
105. Motherwort: traditional heart calming
106. Lemon verbena: polyphenols; early muscle and sleep data
107. Perilla (shiso): allergy data; ALA
108. Ajwain: digestive use
109. Asafoetida (hing): digestive; early data
110. Long pepper: piperine-like compounds

Tier 4: Early or mostly traditional evidence (111-160)

111. Sichuan pepper: sanshool; limited data
112. Grains of paradise: early metabolic data
113. Cubeb: traditional
114. Zedoary: traditional digestive use
115. Cassia bark: glucose effects; high coumarin
116. Vanilla: antioxidants; limited data
117. Mace: polyphenols
118. Annatto: carotenoids
119. Tamarind: polyphenols; early lipid data
120. Kokum: garcinol; early data
121. Catnip: traditional calming
122. Hyssop: traditional respiratory use
123. Lovage: traditional diuretic
124. Borage: GLA in oil; leaves limited
125. Chervil: limited data
126. Chives: organosulfur compounds
127. Sorrel: polyphenols; oxalate-rich
128. Epazote: traditional digestive use
129. Yarrow: traditional; limited human data
130. Mugwort: traditional
131. Calendula: topical wound and skin healing
132. Aloe vera: topical skin benefit; oral laxative effect
133. Tea tree oil: topical antimicrobial only; never swallow
134. Eucalyptus: inhaled respiratory comfort
135. Cat's claw: early arthritis data
136. Yerba mate: polyphenols; caffeine
137. Stevia: zero-calorie sweetener; small BP data
138. Pygeum: urinary symptoms; limited
139. Banaba: early glycemic data
140. Bergamot: lowers lipids in small trials
141. Chasteberry (vitex): PMS symptoms
142. Chrysanthemum flower: traditional; antioxidants
143. Honeysuckle: traditional antiviral use
144. Forsythia: traditional
145. Angelica root: traditional; photosensitizing
146. Gentian: digestive bitter
147. Fenugreek leaf (methi): glycemic data
148. Wild garlic (ramsons): organosulfur compounds
149. Garlic chives: organosulfur compounds
150. Pandan: limited data
151. Kaffir lime leaf: limited data
152. Thai basil: polyphenols
153. Vietnamese coriander: limited data
154. Culantro: traditional
155. Culinary lavender: aroma; limited data
156. Anise hyssop: traditional
157. Safflower: lipid data; early
158. Black cardamom: traditional
159. Fingerroot (krachai): lab studies
160. Basil seeds (sabja): fiber; satiety data

Tier 5: Limited, lab-only or blend entries (161-200)

161. Rooibos: antioxidants; small vascular data
162. Honeybush: polyphenols
163. Lemon myrtle: antimicrobial; lab data
164. Za'atar blend: thyme, sumac, sesame
165. Garam masala blend: mixed warming spices
166. Five-spice blend: star anise, clove, cinnamon, fennel, Sichuan pepper
167. Herbes de Provence: mixed culinary herbs
168. Berbere blend: chili-based spice mix
169. Ras el hanout blend: complex spice mix
170. Harissa: chili and garlic paste
171. Agrimony: traditional astringent
172. Lady's mantle: traditional
173. Meadowsweet: salicylate-containing; traditional
174. Plantain leaf: traditional wound and cough use
175. Mullein: traditional respiratory use
176. Wild thyme: traditional respiratory use
177. Self-heal: lab data
178. Vervain: traditional
179. Wood betony: traditional
180. Shepherd's purse: traditional
181. Cleavers: traditional
182. Violet leaf: traditional
183. Calamint: traditional
184. Ground ivy: traditional
185. Sweet cicely: traditional
186. Salad burnet: traditional
187. Purslane: plant omega-3 (ALA); limited data
188. Amaranth leaf: carotenoids
189. Mitsuba: traditional
190. Sansho pepper: traditional
191. Wasabi leaf: glucosinolates
192. Epimedium: early data; drug interactions possible
193. Tongkat ali: early stress and hormone data
194. Ashitaba: early lab data
195. Damiana: traditional
196. Muira puama: traditional
197. Tribulus: weak evidence
198. Java tea: traditional diuretic
199. Eyebright: traditional
200. Horehound: traditional cough use

Safety and caveats

• Culinary amounts are generally safe; concentrated extracts can cause harm and interact with drugs.
• Drug interactions: St John's wort (reduces effect of many medicines, including contraceptives and antidepressants), garlic, ginger, turmeric, ginkgo and willow bark (bleeding risk with blood thinners), licorice (raises blood pressure), grapefruit-like effects from some extracts.
• Liver risk: kava, high-dose turmeric extracts, ashwagandha and black cohosh have rare reports of liver injury.
• Pregnancy and breastfeeding: many herbs are not safe in medicinal doses. Check before use.
• Cassia cinnamon is high in coumarin; prefer Ceylon for daily use.
• Supplement quality varies widely. Choose third-party tested products.
• Much of the evidence is from small or short trials, and many results are not replicated.