Omnia SanaPlant Comparison
Coriander vs Flaxseed
A side-by-side comparison of two medicinal plants — every documented constituent, action, use, safety note and cited source, assembled automatically from the Omnia Sana database.
At a glance
Coriander and Flaxseed: they share 6 indicated uses (arthritis / joint pain, bloating, indigestion, …); 3 pharmacological actions in common.
Evidence face-off — shared uses
| Condition | Coriander | Flaxseed | Verdict |
|---|---|---|---|
| Arthritis / joint pain | 1/10 | 3/10 | Stronger for Flaxseed |
| Bloating | 1/10 | 3/10 | Stronger for Flaxseed |
| Indigestion | 1/10 | 3/10 | Stronger for Flaxseed |
| Inflammation (general) | 1/10 | 3/10 | Stronger for Flaxseed |
| Metabolic support | 1/10 | 6/10 | Stronger for Flaxseed |
| Skin irritation | 1/10 | 3/10 | Stronger for Flaxseed |
Evidence scores (1–10) are computed from the tier of each cited source. “Comparable” means the two scores are within one point. Follow a score to its detailed sources.
Key Constituents
Seed essential oil dominated by linalool, giving the characteristic aroma and much of the antimicrobial and carminative activity.
Antioxidant flavonoids and phenolics, notably quercetin derivatives, identified across leaf and seed extracts.
Flax is the richest dietary source of SDG-type lignans, converted by gut bacteria to the mammalian lignans enterodiol and enterolactone; studied for antioxidant and hormone-modulating activity.
The dominant fatty acid of the seed oil (~50-55% of total oil), a plant-based omega-3 studied for cardiovascular and anti-inflammatory effects.
Concentrated in the seed coat; gives flaxseed its demulcent, laxative, bulk-forming action.
Present at low levels; cooking/roasting reduces them to negligible amounts in normal food use - a theoretical concern only at high raw intakes.
Pharmacological Actions
Traditional & Indicated Uses
inferred from anti-inflammatory action
inferred from digestive action
inferred from antimicrobial action
inferred from anti-inflammatory action
inferred from antispasmodic action
inferred from antispasmodic action
inferred from anti-inflammatory action
inferred from anti-inflammatory action
inferred from anticancer action
inferred from digestive action
inferred from anti-inflammatory action
Safety, Cautions & Contraindications
• Food use is generally safe for most people (leaf in salads, seed as spice) (Burdock & Carabin, 2009). • Allergy is the main “big warning.” Coriander can trigger reactions ranging from mild oral itching to more serious allergy in sensitive people, especially those with pollen allergies (e.g., birch/mugwort) or other Apiaceae spice allergies (Thermo Fisher/Phadia, n.d.; Berghea et al., 2025). • If you use supplements (capsules/powder) and you take diabetes medication, be cautious: coriander seed powder has shown blood-sugar improvements in a small human trial, so it may add to the effect of glucose-lowering meds (Zamany et al., 2025). • Essential oil is not the same as the spice. Coriander essential oil is highly concentrated and should not be taken internally in “DIY doses.” It can be irritating, and safety data are discussed mainly for food-flavouring levels—not self-prescribed medicinal dosing (Burdock & Carabin, 2009). • Pregnancy / breastfeeding: normal culinary amounts are generally considered fine; “medicinal-dose” supplements or essential oil are best avoided unless guided by a qualified professional because safety data at higher doses is limited (Burdock & Carabin, 2009).
Duke (2002) provides clinical evidence (score 2) for coriander's role as an aperitif (appetite stimulant) and digestive tonic, consistent with Commission E approval. It demonstrates antispasmodic, carminative, and antifungal activities at the experimental level. Dose: 1–3 g crushed fruits (seeds) three times daily, or equivalent preparations. Duke notes mild hypoglycemic activity and a potential antiimplantation effect in high doses — use with caution in women attempting pregnancy (Duke, 2002).
Flaxseeds are safe for most people at recommended food amounts (1–2 tablespoons ground/day). They must be ground or milled to be bioavailable — whole seeds largely pass through the gut undigested. High fibre content may cause bloating, flatulence, and loose stools, especially if fibre intake is increased rapidly without adequate hydration. Flaxseeds contain cyanogenic glycosides (linamarin, linustatin); cooking or roasting reduces these to negligible levels in normal food amounts. Raw seeds in very large quantities are a theoretical concern, but typical use is safe (EFSA, 2017).
Medication interactions: Flaxseed may reduce absorption of oral medications if taken simultaneously — space flaxseed supplementation 1–2 hours from medications. Omega-3 ALA and lignans may mildly enhance anticoagulant/antiplatelet effects; use caution with blood thinners. Some sources suggest caution with hormone-sensitive conditions due to phytoestrogen (lignan) content, though dietary amounts are unlikely to pose risk (Adolphe et al., 2010).
Pregnancy: Food amounts are generally considered safe; high-dose supplements should be discussed with a clinician due to limited safety data.
Duke (2002) rates flaxseed as +++ with clinical evidence (score 2) for antiatherogenic, hypocholesterolemic, laxative, lipolytic (fat-dissolving), and demulcent activities. Flaxseed's omega-3 fatty acids (ALA) and lignans are associated with reduced cardiovascular risk. Commission E approves flaxseed as a laxative and for mucilaginous protection of inflamed gastrointestinal mucosa. Dose: 1–2 tablespoons ground seed with ample water, twice daily. Whole seeds should be chewed or ground for full medicinal effect. Cyanogenic glycosides are present but at safe levels in normal dietary amounts (Duke, 2002).
External Ids
Botanical Description
Slender annual herb with delicate, broad, lobed lower leaves and finely divided, feathery upper leaves - a marked contrast within the same plant. Small white or pale pink flowers are borne in flat compound umbels, followed by round, ridged, aromatic seeds. The fresh leaf ('cilantro') has a distinctive citrusy aroma, often described as soapy by those with a genetic sensitivity to it.[4]
Erect annual herb, slender and often branched near the top, growing 30-80 (up to 100) cm tall from a fine taproot. Leaves are alternate, sessile, narrowly lanceolate to linear, blue-green and entire-margined. Flowers are pale blue (occasionally white or pink), five-petalled and borne on slender stalks in loose terminal cymes. The fruit is a small globular capsule ('boll') that splits into ten compartments, each containing one flattened, glossy, red-brown seed.[5]
Habitat
Believed native to the Mediterranean region and Western Asia; cultivated worldwide as a culinary herb and spice crop on well-drained, sunny sites.[4]
Native to the Mediterranean region and the Fertile Crescent, cultivated since prehistory for fibre and oil and now grown worldwide in temperate regions with well-drained, fertile soils and a cool, moist growing season; occasionally found as a naturalised escape on waste and cultivated ground.[5]
Harvesting
Leaves are picked fresh through the growing season, before the plant bolts (flowers), when the flavour is best; the seed is harvested in late summer once the umbels have browned and dried, then threshed; the root can be dug at the same time as young leaves.
Grown as an annual crop, seed is harvested once the capsules ('bolls') have dried and turned brown, typically in late summer, by cutting or combining the whole plant and threshing out the seed. Whole seed stores well; it should only be ground shortly before use, since the oil in ground seed oxidises and turns rancid quickly.[2]
Traditional Uses
Coriander seed and leaf have a very long culinary and medicinal history across the Mediterranean, Middle East and Asia as a digestive carminative for indigestion, bloating and cramping, and, more recently, studied for calming/anxiolytic effects on the central nervous system alongside cardiovascular and metabolic benefits.[1, 4]
Flaxseed has a long history of traditional use as a bulk-forming laxative and demulcent for constipation and irritated gut mucosa, and as a poultice for boils and inflamed skin. Modern interest centres on its lignan (secoisolariciresinol diglucoside) and alpha-linolenic acid content, studied for cardiovascular, metabolic and hormone-related outcomes.[2, 4, 5]
Preparations
Seed powder or extract studied for glycaemic and psychiatric-symptom support in clinical and preclinical work.
Whole seed freshly ground (milled) and taken with plenty of liquid, or stirred into food; grinding is needed to make the oil and lignans bioavailable, as whole seeds largely pass through the gut undigested.
Cold-pressed oil taken as a concentrated source of alpha-linolenic acid (omega-3); lacks the fibre and lignan content of the whole ground seed.
References
Lookalikes Review
Dangerous Lookalikes
Not documented
Dosage
Not documented
Traditional guidance and Duke (2002) suggest 1-2 tablespoons of ground seed with ample water, once or twice daily. Educational reference only, not a prescription.
A randomised placebo-controlled trial titrated flax oil capsules (550 mg alpha-linolenic acid per 1 g of oil) to 12 capsules per day, i.e. up to roughly 12 g of oil daily, over 16 weeks - broadly matching the 1-2 tablespoons (about 10-15 mL) daily often cited for omega-3 intake. That trial was in children and adolescents with bipolar disorder and its primary outcomes were null; it is cited here only as a source for an administered human dose of the oil, not as evidence of benefit. Note the EU herbal monograph on Lini semen covers the SEED, not the oil. Educational reference only, not a prescription.
References & Sources
- Santibáñez, A., Jiménez-Ferrer, E., Angulo-Bejarano, P.I., Sharma, A. and Herrera-Ruiz, M (2023) 'Coriandrum sativum and Its Utility in Psychiatric Disorders', Molecules, 28(14), pp. 5314. doi:10.3390/molecules28145314 Traditional / reference
https://doi.org/10.3390/molecules28145314 - Wei, J.N., Liu, Z.H., Zhao, Y.P., Zhao, L.L. et al (2019) 'Phytochemical and bioactive profile of Coriandrum sativum L', Food Chemistry, 286, pp. 260-267. doi:10.1016/j.foodchem.2019.01.171 Traditional / reference
https://doi.org/10.1016/j.foodchem.2019.01.171 - Hosseini, M., Boskabady, M.H. and Khazdair, M.R (2021) 'Neuroprotective effects of Coriandrum sativum and its constituent, linalool: A review', Avicenna Journal of Phytomedicine, 11(5), pp. 436-450. doi:10.22038/AJP.2021.55681.2786 Traditional / reference
https://doi.org/10.22038/AJP.2021.55681.2786 - Mahleyuddin, N.N., Moshawih, S., Ming, L.C., Zulkifly, H.H., Kifli, N. and Loy, M.J (2021) 'Coriandrum sativum L.: A Review on Ethnopharmacology, Phytochemistry, and Cardiovascular Benefits', Molecules, 27(1), pp. 209. doi:10.3390/molecules27010209 Meta-analysis / review
https://doi.org/10.3390/molecules27010209 - Prachayasittikul, V., Prachayasittikul, S., Ruchirawat, S. and Prachayasittikul, V (2017) 'Coriander (Coriandrum sativum): A promising functional food toward the well-being', Food Research International, 105, pp. 305-323. doi:10.1016/j.foodres.2017.11.019 Meta-analysis / review
https://doi.org/10.1016/j.foodres.2017.11.019 - Laribi, B., Kouki, K., M'Hamdi, M. and Bettaieb, T (2015) 'Coriander (Coriandrum sativum L.) and its bioactive constituents', Fitoterapia, 103, pp. 9-26. doi:10.1016/j.fitote.2015.03.012 Meta-analysis / review
https://doi.org/10.1016/j.fitote.2015.03.012 - Sahib, N.G., Anwar, F., Gilani, A.H., Hamid, A.A., Saari, N. and Alkharfy, K.M (2012) 'Coriander (Coriandrum sativum L.): a potential source of high-value components for functional foods and nutraceuticals - a review', Phytotherapy Research, 27(10), pp. 1439-1456. doi:10.1002/ptr.4897 Meta-analysis / review
https://doi.org/10.1002/ptr.4897 - Scandar, S., Zadra, C. and Marcotullio, M.C (2023) 'Coriander (Coriandrum sativum) Polyphenols and Their Nutraceutical Value against Obesity and Metabolic Syndrome', Molecules, 28(10), pp. 4187. doi:10.3390/molecules28104187 Meta-analysis / review
https://doi.org/10.3390/molecules28104187 - Al-Khayri, J.M., Banadka, A., Nandhini, M., Nagella, P., Al-Mssallem, M.Q. and Alessa, F.M (2023) 'Coriandrum sativum Essential Oil: A review on Its Phytochemistry and Biological Activity', Molecules, 28(2), pp. 696. doi:10.3390/molecules28020696 Meta-analysis / review
https://doi.org/10.3390/molecules28020696 - Kukner, A., Soyler, G., Toros, P., Dede, G., Mericli, F. and Isik, S (2020) 'Protective effect of Coriandrum sativum extract against inflammation and apoptosis in liver ischaemia/reperfusion injury', Folia Morphologica, 80(2), pp. 363-371. doi:10.5603/FM.a2020.0060 Preclinical
https://doi.org/10.5603/FM.a2020.0060 - Liu, Q.F., Jeong, H., Lee, J.H., Hong, Y.K., Oh, Y. and Kim, Y.M (2016) 'Coriandrum sativum Suppresses Abeta42-Induced ROS Increases, Glial Cell Proliferation, and ERK Activation', American Journal of Chinese Medicine, 44(7), pp. 1325-1347. doi:10.1142/S0192415X16500749 Preclinical
https://doi.org/10.1142/S0192415X16500749 - Koppula, S., Alluri, R. and Kopalli, S.R (2021) 'Coriandrum sativum attenuates microglia mediated neuroinflammation and MPTP-induced behavioral and oxidative changes in Parkinson's disease mouse model', EXCLI Journal, 20, pp. 835-850. doi:10.17179/excli2021-3668 Preclinical
https://doi.org/10.17179/excli2021-3668 - Laribi, B., Kouki, K., M'Hamdi, M. and Bettaieb, T (2015) 'Coriander (Coriandrum sativum L.) and its bioactive constituents', pp. 9--26. Traditional / reference
https://scholar.google.com/scholar?q=Coriander%20%28Coriandrum%20sativum%20L.%29%20and%20its%20bioactive%20constituents - Royal Botanic Gardens, Kew (n.d.). Available at: https://powo.science.kew.org Traditional / reference
https://powo.science.kew.org - World Health Organization (1999) 'WHO Monographs on Selected Medicinal Plants'. Traditional / reference
https://scholar.google.com/scholar?q=WHO%20Monographs%20on%20Selected%20Medicinal%20Plants - Duke, J.A (2002) 'Handbook of Medicinal Herbs, Second Edition'. Traditional / reference
https://scholar.google.com/scholar?q=Handbook%20of%20Medicinal%20Herbs%2C%20Second%20Edition - Dayan, A.D (2024) 'Death of Socrates: a likely case of poison hemlock (Conium maculatum) poisoning', Clinical Toxicology (Philadelphia, Pa.), 62(1), pp. 56-60. doi:10.1080/15563650.2024.2309328 Clinical study
https://doi.org/10.1080/15563650.2024.2309328 - King County Noxious Weeds (2024) 'Poison hemlock (Conium maculatum) identification and control'. Available at: https://kingcounty.gov/en/dept/dnrp/nature-recreation/environment-ecology-conservation/noxious-weeds/identification-control/poison-hemlock Traditional / reference
https://kingcounty.gov/en/dept/dnrp/nature-recreation/environment-ecology-conservation/noxious-weeds/identification-control/poison-hemlock - Grow Forage Cook Ferment 'Poison Hemlock: How to Identify and Potential Look-alikes'. Available at: https://www.growforagecookferment.com/poison-hemlock/ Traditional / reference
https://www.growforagecookferment.com/poison-hemlock/ - Teuscher, E. and Greger, H. and Adrian, V (1990) 'Toxicity of Aethusa cynapium L. (fool's parsley)', Pharmazie, 45(7), pp. 537-8. Available at: https://pubmed.ncbi.nlm.nih.gov/2236201/ Preclinical
https://pubmed.ncbi.nlm.nih.gov/2236201/ - Minnesota Wildflowers (2024) 'Aethusa cynapium (Fool's Parsley)'. Available at: https://www.minnesotawildflowers.info/flower/fools-parsley Traditional / reference
https://www.minnesotawildflowers.info/flower/fools-parsley - Botanical Society of Scotland (2023) 'Plant of the Week: Fool's Parsley (Aethusa cynapium)'. Available at: https://botsoc.scot/2023/08/20/plant-of-the-week-21st-august-2023-fools-parsley-aethusa-cynapium/ Traditional / reference
https://botsoc.scot/2023/08/20/plant-of-the-week-21st-august-2023-fools-parsley-aethusa-cynapium/
- Picur, B., Cebrat, M., Zabrocki, J. and Siemion, I.Z (2006) 'Cyclopeptides of Linum usitatissimum', Journal of Peptide Science, 12(9), pp. 569-574. doi:10.1002/psc.779 Preclinical
https://doi.org/10.1002/psc.779 - Basch, E., Bent, S., Collins, J., Dacey, C., Hammerness, P., Harrison, M., Smith, M., Szapary, P., Ulbricht, C., Vora, M. and Weissner, W (2007) 'Flax and flaxseed oil (Linum usitatissimum): a review by the Natural Standard Research Collaboration', Journal of the Society for Integrative Oncology, 5(3), pp. 92-105. doi:10.2310/7200.2007.005 Meta-analysis / review
https://doi.org/10.2310/7200.2007.005 - Chhillar, H., Chopra, P. and Ashfaq, M.A (2020) 'Lignans from linseed (Linum usitatissimum L.) and its allied species: retrospect, introspect and prospect', Critical Reviews in Food Science and Nutrition, 61(16), pp. 2719-2741. doi:10.1080/10408398.2020.1784840 Meta-analysis / review
https://doi.org/10.1080/10408398.2020.1784840 - Ansari, R., Zarshenas, M.M. and Dadbakhsh, A.H (2019) 'A review on pharmacological and clinical aspects of Linum usitatissimum L', Current Drug Discovery Technologies, 16(2), pp. 148-158. doi:10.2174/1570163815666180521101136 Meta-analysis / review
https://doi.org/10.2174/1570163815666180521101136 - Akter, Y., Junaid, M., Afrose, S.S., Nahrin, A., Alam, M.S., Sharmin, T., Akter, R. and Hosen, S.M.Z (2021) 'A comprehensive review on Linum usitatissimum medicinal plant: its phytochemistry, pharmacology, and ethnomedicinal uses', Mini Reviews in Medicinal Chemistry, 21(18), pp. 2801-2834. doi:10.2174/1389557521666210203153436 Meta-analysis / review
https://doi.org/10.2174/1389557521666210203153436 - Musazadeh, V., Abolghasemian, M., Kavyani, Z., Moridpour, A.H., Nazari, A. and Faghfouri, A.H (2024) 'The effects of flaxseed (Linum usitatissimum) supplementation on anthropometric indices: an updated systematic review and meta-analysis of randomized clinical trials', Complementary Therapies in Medicine, 84, pp. 103066. doi:10.1016/j.ctim.2024.103066 Meta-analysis / review
https://doi.org/10.1016/j.ctim.2024.103066 - Mueed, A., Shibli, S., Jahangir, M., Jabbar, S. and Deng, Z (2022) 'A comprehensive review of flaxseed (Linum usitatissimum L.): health-affecting compounds, mechanism of toxicity, detoxification, anticancer and potential risk', Critical Reviews in Food Science and Nutrition, 63(32), pp. 11081-11104. doi:10.1080/10408398.2022.2092718 Meta-analysis / review
https://doi.org/10.1080/10408398.2022.2092718 - Kaithwas, G., Mukherjee, A., Chaurasia, A.K. and Majumdar, D.K (2011) 'Anti-inflammatory, analgesic and antipyretic activities of Linum usitatissimum L. (flaxseed/linseed) fixed oil', Indian Journal of Experimental Biology, 49(12), pp. 932-938. Preclinical
https://scholar.google.com/scholar?q=Anti-inflammatory%2C%20analgesic%20and%20antipyretic%20activities%20of%20Linum%20usitatissimum%20L.%20%28flaxseed/linseed%29%20fixed%20oil - Rafieian-Kopaei, M., Shakiba, A., Sedighi, M. and Bahmani, M (2017) 'The analgesic and anti-inflammatory activity of Linum usitatissimum in Balb/c mice', Journal of Evidence-Based Complementary & Alternative Medicine, 22(4), pp. 892-896. doi:10.1177/2156587217717416 Preclinical
https://doi.org/10.1177/2156587217717416 - Sirotkin, A.V (2023) 'Influence of flaxseed (Linum usitatissimum) on female reproduction', Planta Medica, 89(6), pp. 608-615. doi:10.1055/a-2013-2966 Meta-analysis / review
https://doi.org/10.1055/a-2013-2966 - Thompson, L.U., Chen, J.M., Li, T., Strasser-Weippl, K. and Goss, P.E (2006) 'Dietary flaxseed alters tumor biological markers in postmenopausal breast cancer', 11(10), pp. 3828--3835. doi:10.1158/1078-0432.CCR-04-2326 Randomized trial
https://doi.org/10.1158/1078-0432.CCR-04-2326 - Adolphe, J.L., Whiting, S.J., Juurlink, B.H.J., Thorpe, L.U. and Alcorn, J (2010) 'Health effects with consumption of the flax lignan secoisolariciresinol diglucoside', 103(7), pp. 929--938. doi:10.1017/S0007114509992753 Clinical study
https://doi.org/10.1017/S0007114509992753 - Caligiuri, S.P.B., Edel, A.L., Aliani, M. and Pierce, G.N (2014) 'Flaxseed for hypertension: implications for improved cardiovascular risk', 16(12), pp. 499. doi:10.1007/s11906-014-0499-8 Randomized trial
https://doi.org/10.1007/s11906-014-0499-8 - European Food Safety Authority (2017) 'Safety of cyanogenic glycosides from flaxseed consumed as part of a usual diet', 15(11). doi:10.2903/j.efsa.2017.5026 Preclinical
https://doi.org/10.2903/j.efsa.2017.5026 - Harris, W.S (2012) 'Stearidonic acid as a surrogate for eicosapentaenoic acid in cardiovascular risk reduction: update and recommendation', 70(10), pp. 565--574. Traditional / reference
https://scholar.google.com/scholar?q=Stearidonic%20acid%20as%20a%20surrogate%20for%20eicosapentaenoic%20acid%20in%20cardiovascular%20risk%20reduction%3A%20update%20and%20recommendation - Latvijas valsts mežzinātnes institūts (n.d.) 'Linsēkla Latvijā'. Available at: https://www.silava.lv Traditional / reference
https://www.silava.lv - Pan, A., Sun, J., Chen, Y. et al (2009) 'Effects of a flaxseed-derived lignan supplement in type 2 diabetic patients: a randomized, double-blind, cross-over trial', 4(11). doi:10.1371/journal.pone.0007654 Randomized trial
https://doi.org/10.1371/journal.pone.0007654 - Royal Botanic Gardens, Kew (n.d.) 'Linum usitatissimum L'. Available at: https://powo.science.kew.org/taxon/urn:lsid:http://ipni.org:names:381313-1 Traditional / reference
https://powo.science.kew.org/taxon/urn:lsid:http://ipni.org:names:381313-1 - Gracious, B.L., Chirieac, M.C., Costescu, S., Finucane, T.L., Youngstrom, E.A. and Hibbeln, J.R (2010) 'Randomized, placebo-controlled trial of flax oil in pediatric bipolar disorder', Bipolar Disorders, 12(2), pp. 142-154. doi:10.1111/j.1399-5618.2010.00799.x Randomized trial
https://doi.org/10.1111/j.1399-5618.2010.00799.x - Duke, J.A (2002) 'Handbook of Medicinal Herbs, Second Edition'. Traditional / reference
https://scholar.google.com/scholar?q=Handbook%20of%20Medicinal%20Herbs%2C%20Second%20Edition
Generated automatically from the Omnia Sana plant database and its cited sources. For educational purposes only — not medical advice. Always consult a qualified practitioner before using medicinal plants.