Omnia SanaPlant Comparison
Perforate St John’s-wort vs Field scabious
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
Perforate St John’s-wort and Field scabious: they share 5 indicated uses (eczema, infection (general), inflammation (general), …); 2 pharmacological actions in common.
Evidence face-off — shared uses
| Condition | Perforate St John’s-wort | Field scabious | Verdict |
|---|---|---|---|
| Eczema | 1/10 | 2/10 | Comparable evidence |
| Infection (general) | 1/10 | 2/10 | Comparable evidence |
| Inflammation (general) | 1/10 | 7/10 | Stronger for Field scabious |
| Skin irritation | 1/10 | 2/10 | Comparable evidence |
| Wounds | 1/10 | 2/10 | Comparable evidence |
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
Red pigments historically used to standardise extracts; contribute to antiviral activity and are the compounds responsible for photosensitivity risk.
Considered the principal compound behind the antidepressant activity and the main driver of the herb's potent CYP3A4/P-glycoprotein induction and drug-interaction profile.
Antioxidant flavonoids contributing to overall activity.
Chlorogenic, cryptochlorogenic and dicaffeoylquinic acids and caffeoylhydrocitric acid (antioxidant).
C-glycosidic flavones such as isovitexin and related flavonoids.
Saponin glycosides (knautiosides) characteristic of the plant and the Caprifoliaceae family.
Pharmacological Actions
Traditional 'blood purifier' (depurative) for skin complaints; the classic use of field scabious.
Knautia and related Caprifoliaceae extracts inhibit inflammatory mediators (COX/LOX).
Traditional & Indicated Uses
inferred from anti-inflammatory action
inferred from antiviral action
inferred from anti-inflammatory action
inferred from sedative action
inferred from anti-inflammatory action
Traditional remedy for eczema, itching and skin complaints; anti-acne activity of Knautia extracts.
Anti-acne activity of Knautia species extracts (antibacterial, anti-inflammatory).
inferred from traditional external use on cuts and sores
Safety, Cautions & Contraindications
Significant drug interactions: strongly induces CYP3A4 and P-glycoprotein, reducing plasma levels of many drugs including oral contraceptives, antiretrovirals, cyclosporine, warfarin, and digoxin. May cause photosensitivity (fair-skinned individuals). Do not combine with SSRIs, SNRIs, or MAOIs (serotonin syndrome risk). Avoid in bipolar disorder.
Duke (2002) rates St. John's wort as ++ (raised from earlier editions) and notes antidepressant, antiviral, antibacterial, and wound-healing activities at experimental and clinical levels. Hypericin and hyperforin are identified as key active constituents. Clinical evidence (score 2) confirms antidepressant efficacy in mild-to-moderate depression, and WHO/Commission E provide approval for this indication. Dose: 300 mg standardized extract (0.3% hypericin, 3–5% hyperforin) three times daily. Duke emphasizes the critical drug interaction: St. John's wort is a potent CYP3A4 inducer and can significantly reduce blood levels of many medications including oral contraceptives, cyclosporine, antiretrovirals, and warfarin. Avoid combined use with SSRIs (serotonin syndrome risk) and pharmaceutical antidepressants (Duke, 2002).
Very little is known about the safety of field scabious and there are no clinical data; avoid medicinal doses in pregnancy and breastfeeding and use only modest amounts.
Most pharmacological data come from closely related Caprifoliaceae (genus Knautia, Scabiosa, Dipsacus) rather than Knautia arvensis itself; apply to field scabious with caution.
External Ids
Botanical Description
Erect, branching perennial herb with paired, oval leaves dotted with tiny translucent oil glands that look like pinpricks when held to the light (giving the species name 'perforatum'). Bright yellow, five-petalled flowers with numerous stamens and black dots along the petal edges are borne in flat-topped clusters, and release a reddish pigment when crushed.[4]
A hairy perennial herb of the honeysuckle family (formerly Dipsacaceae), 25-100 cm tall, growing from a stout rootstock. The stems are roughly hairy and bear opposite leaves that are variable - the lower ones often lyre-shaped or pinnately lobed, the upper deeply cut. The flowers are massed into flat, domed pincushion heads about 3-4 cm across, lilac to bluish-violet, with the outer florets enlarged; the heads are carried on long stalks and, unlike true scabious (Scabiosa), the receptacle is hairy rather than scaly. It flowers through summer and is a favourite of bees and butterflies.[1]
Habitat
Grows in grassland, roadsides, woodland clearings and waste ground on well-drained soils; native to Europe, Western Asia and North Africa and widely naturalised elsewhere, including North America and Australia.[4]
Dry grassland, meadows, pastures, dry hills, roadside banks, field margins and open woods, on well-drained and often calcareous soils across Europe and into western Asia and parts of Africa. A characteristic plant of unimproved dry meadows.[1]
Harvesting
The flowering tops (flower and upper leaf) are cut in summer as the flowers open, around the traditional St John's Day period, and dried quickly in a warm, shaded, airy place to preserve the hypericin and hyperforin content.[4]
The flowering aerial parts (leaves, stems, flower heads) are gathered in summer while in flower and dried; the root is also used. Best cut from established plants in dry grassland.[1]
Traditional Uses
St John's wort has a centuries-long European folk reputation as a wound-healing and nerve tonic herb, traditionally used for mild wounds, burns and nerve pain and to lift low mood; this traditional mood-supporting use is now one of the most extensively clinically studied applications of any herbal medicine, with standardised extracts shown comparable to conventional antidepressants for mild-to-moderate depression.[1, 4]
Field scabious has a European folk-medicine reputation chiefly as a remedy for skin complaints - eczema, itching, scabies (the name 'scabious' comes from its use against 'the scab'), cuts and sores - taken internally as a 'blood purifier' (alterative/depurative) and applied externally as a wash or poultice. It has also been used for coughs and sore throats. The plant is rich in phenolic acids, flavonoids and saponins; the closely related genera Knautia, Scabiosa and Dipsacus in the honeysuckle family share this chemistry and a tradition of use in skin disease and inflammation.[3, 4]
Preparations
Flowering-top extract standardised to hypericin and/or hyperforin content, taken as tablets or capsules; the best-studied clinical form for mood support.
Dosage
Clinical trials for mild-to-moderate depression commonly use around 300 mg of standardised extract three times daily (900 mg/day total); given extensive drug interactions, use should be discussed with a healthcare provider, especially alongside other medicines. Educational reference only, not a prescription.
Not documented
Drug Class Interactions
Not documented
References
Pairings
St John's wort raises serotonin activity and can cause serotonin syndrome when combined with other serotonin-boosting agents; pairing it with another mood-active, serotonergic herb such as saffron may add to this risk.[30]
St John's wort is a strong enzyme inducer and increases serotonin activity; combining it with another antidepressant-type herb such as rhodiola may add to serotonergic effects and unpredictably change how each is handled by the body.[30]
St John's wort speeds up the breakdown of many substances and also raises serotonin activity; pairing it with a sedative herb such as valerian may add to drowsiness and can unpredictably change how each is handled by the body.[30, 31]
St John's wort is a strong enzyme inducer and kava is a liver-metabolised sedative; combining them may add to central-nervous-system effects and alter how kava is processed, so combined use warrants caution.[30, 31]
Not documented
Lookalikes Review
Synonyms
Not documented
References & Sources
- Ng, Q.X., Venkatanarayanan, N. and Ho, C.Y.X (2017) 'Clinical use of Hypericum perforatum (St John's wort) in depression: A meta-analysis', Journal of Affective Disorders, 210, pp. 211-221. doi:10.1016/j.jad.2016.12.048 Meta-analysis / review
https://doi.org/10.1016/j.jad.2016.12.048 - Kholghi, G., Arjmandi-Rad, S., Zarrindast, M.R. and Vaseghi, S (2022) 'St. John's wort (Hypericum perforatum) and depression: what happens to the neurotransmitter systems?', Naunyn-Schmiedeberg's Archives of Pharmacology, 395(6), pp. 629-642. doi:10.1007/s00210-022-02229-z Traditional / reference
https://doi.org/10.1007/s00210-022-02229-z - Fugh-Berman, A (2000) 'Herb-drug interactions', Lancet, 355(9198), pp. 134-138. doi:10.1016/S0140-6736(99)06457-0 Traditional / reference
https://doi.org/10.1016/S0140-6736(99)06457-0 - Nobakht, S.Z., Akaberi, M., Mohammadpour, A.H., Tafazoli Moghadam, A. and Emami, S.A (2022) 'Hypericum perforatum: Traditional uses, clinical trials, and drug interactions', Iranian Journal of Basic Medical Sciences, 25(9), pp. 1045-1058. doi:10.22038/IJBMS.2022.65112.14338 Meta-analysis / review
https://doi.org/10.22038/IJBMS.2022.65112.14338 - Jiang, Z., Wang, F., Zhao, Y., Lu, L., Jiang, X., Huang, T., Lin, Y., Guo, L., Weng, Z. and Liu, E (2024) 'Hypericum perforatum L. attenuates depression by regulating Akkermansia muciniphila, tryptophan metabolism and NFkB-NLRP2-Caspase1-IL1beta pathway', Phytomedicine, 132, pp. 155847. doi:10.1016/j.phymed.2024.155847 Preclinical
https://doi.org/10.1016/j.phymed.2024.155847 - Oliveira, A.I., Pinho, C., Sarmento, B. and Dias, A.C.P (2016) 'Neuroprotective Activity of Hypericum perforatum and Its Major Components', Frontiers in Plant Science, 7, pp. 1004. doi:10.3389/fpls.2016.01004 Meta-analysis / review
https://doi.org/10.3389/fpls.2016.01004 - Russo, E., Scicchitano, F., Whalley, B.J., Mazzitello, C., Ciriaco, M., Esposito, S., Patane, M., Upton, R., Pugliese, M., Chimirri, S., Mammi, M., Palleria, C. and De Sarro, G (2013) 'Hypericum perforatum: pharmacokinetic, mechanism of action, tolerability, and clinical drug-drug interactions', Phytotherapy Research, 28(5), pp. 643-655. doi:10.1002/ptr.5050 Meta-analysis / review
https://doi.org/10.1002/ptr.5050 - Saddiqe, Z., Naeem, I. and Maimoona, A (2010) 'A review of the antibacterial activity of Hypericum perforatum L', Journal of Ethnopharmacology, 131(3), pp. 511-521. doi:10.1016/j.jep.2010.07.034 Meta-analysis / review
https://doi.org/10.1016/j.jep.2010.07.034 - Mennini, T. and Gobbi, M (2004) 'The antidepressant mechanism of Hypericum perforatum', Life Sciences, 75(9), pp. 1021-1027. doi:10.1016/j.lfs.2004.04.005 Meta-analysis / review
https://doi.org/10.1016/j.lfs.2004.04.005 - Liu, Y., Jiang, Y., Huang, R., Yang, J., Xiao, B. and Dong, J (2013) 'Hypericum perforatum L. preparations for menopause: a meta-analysis of efficacy and safety', Climacteric, 17(4), pp. 325-335. doi:10.3109/13697137.2013.861814 Meta-analysis / review
https://doi.org/10.3109/13697137.2013.861814 - Wurglics, M. and Schubert-Zsilavecz, M (2006) 'Hypericum perforatum: a 'modern' herbal antidepressant: pharmacokinetics of active ingredients', Clinical Pharmacokinetics, 45(5), pp. 449-468. doi:10.2165/00003088-200645050-00002 Meta-analysis / review
https://doi.org/10.2165/00003088-200645050-00002 - Kasper, S (2001) 'Hypericum perforatum - a review of clinical studies', Pharmacopsychiatry, 34(Suppl 1), pp. S51-S55. doi:10.1055/s-2001-15467 Meta-analysis / review
https://doi.org/10.1055/s-2001-15467 - Nathan, P (1999) 'The experimental and clinical pharmacology of St John's Wort (Hypericum perforatum L.)', Molecular Psychiatry, 4(4), pp. 333-338. doi:10.1038/sj.mp.4000557 Meta-analysis / review
https://doi.org/10.1038/sj.mp.4000557 - Verotta, L (2003) 'Hypericum perforatum, a source of neuroactive lead structures', Current Topics in Medicinal Chemistry, 3(2), pp. 187-201. doi:10.2174/1568026033392589 Meta-analysis / review
https://doi.org/10.2174/1568026033392589 - Linde, K. et al (2008) 'St John'. Traditional / reference
https://scholar.google.com/scholar?q=St%20John - Natural Standard (2013) 'Hypericum perforatum (St'. Traditional / reference
https://scholar.google.com/scholar?q=Hypericum%20perforatum%20%28St - 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 - Zhou, S., Chan, E., Pan, S.Q., Huang, M. and Lee, E.J.D (2004) 'Pharmacokinetic interactions of drugs with St John's wort', Journal of Psychopharmacology, 18(2), pp. 262-276. doi:10.1177/0269881104042632 Meta-analysis / review
https://doi.org/10.1177/0269881104042632 - Izzo, A.A. and Ernst, E (2009) 'Interactions between herbal medicines and prescribed drugs: an updated systematic review', Drugs, 69(13), pp. 1777-1798. doi:10.2165/11317010-000000000-00000 Meta-analysis / review
https://doi.org/10.2165/11317010-000000000-00000 - Borrelli, F. and Izzo, A.A (2009) 'Herb-drug interactions with St John's wort (Hypericum perforatum): an update on clinical observations', The AAPS Journal, 11(4), pp. 710-727. doi:10.1208/s12248-009-9146-8 Meta-analysis / review
https://doi.org/10.1208/s12248-009-9146-8 - Nicolussi, S., Drewe, J., Butterweck, V. and Meyer zu Schwabedissen, H.E (2020) 'Clinical relevance of St. John's wort drug interactions revisited', British Journal of Pharmacology, 177(6), pp. 1212-1226. doi:10.1111/bph.14936 Meta-analysis / review
https://doi.org/10.1111/bph.14936 - Piscitelli, S.C., Burstein, A.H., Chaitt, D., Alfaro, R.M. and Falloon, J (2000) 'Indinavir concentrations and St John's wort', Lancet, 355(9203), pp. 547-548. doi:10.1016/S0140-6736(99)05712-8 Clinical study
https://doi.org/10.1016/S0140-6736(99)05712-8 - Barone, G.W., Gurley, B.J., Ketel, B.L., Lightfoot, M.L. and Abul-Ezz, S.R (2000) 'Drug interaction between St. John's wort and cyclosporine', Annals of Pharmacotherapy, 34(9), pp. 1013-1016. doi:10.1345/aph.10088 Clinical study
https://doi.org/10.1345/aph.10088 - Murphy, P.A., Kern, S.E., Stanczyk, F.Z. and Westhoff, C.L (2005) 'Interaction of St. John's Wort with oral contraceptives: effects on the pharmacokinetics of norethindrone and ethinyl estradiol, ovarian activity and breakthrough bleeding', Contraception, 71(6), pp. 402-408. doi:10.1016/j.contraception.2004.11.004 Clinical study
https://doi.org/10.1016/j.contraception.2004.11.004 - Murphy, P.A., Kern, S.E., Stanczyk, F.Z. and Westhoff, C.L (2005) 'Interaction of St. John's Wort with oral contraceptives: effects on the pharmacokinetics of norethindrone and ethinyl estradiol, ovarian activity and breakthrough bleeding', Contraception, 71(6), pp. 402-408. doi:10.1016/j.contraception.2004.11.004 Clinical study
https://doi.org/10.1016/j.contraception.2004.11.004 - Pfrunder, A., Schiesser, M., Gerber, S., Haschke, M., Bitzer, J. and Drewe, J (2003) 'Interaction of St John's wort with low-dose oral contraceptive therapy: a randomized controlled trial', British Journal of Clinical Pharmacology, 56(6), pp. 683-690. doi:10.1046/j.1365-2125.2003.02005.x Randomized trial
https://doi.org/10.1046/j.1365-2125.2003.02005.x - Johne, A., Brockmoller, J., Bauer, S., Maurer, A., Langheinrich, M. and Roots, I (1999) 'Pharmacokinetic interaction of digoxin with an herbal extract from St John's wort (Hypericum perforatum)', Clinical Pharmacology and Therapeutics, 66(4), pp. 338-345. doi:10.1053/cp.1999.v66.a101944 Clinical study
https://doi.org/10.1053/cp.1999.v66.a101944 - Mathijssen, R.H.J., Verweij, J., de Bruijn, P., Loos, W.J. and Sparreboom, A (2002) 'Effects of St. John's wort on irinotecan metabolism', Journal of the National Cancer Institute, 94(16), pp. 1247-1249. doi:10.1093/jnci/94.16.1247 Randomized trial
https://doi.org/10.1093/jnci/94.16.1247 - Smith, P., Bullock, J.M., Booker, B.M., Haas, C.E., Berenson, C.S. and Jusko, W.J (2004) 'The influence of St. John's wort on the pharmacokinetics and protein binding of imatinib mesylate', Pharmacotherapy, 24(11), pp. 1508-1514. doi:10.1592/phco.24.16.1508.50958 Clinical study
https://doi.org/10.1592/phco.24.16.1508.50958 - Izzo, A.A (2004) 'Drug interactions with St. John's Wort (Hypericum perforatum): a review of the clinical evidence', International Journal of Clinical Pharmacology and Therapeutics, 42(3), pp. 139-148. doi:10.5414/cpp42139 Meta-analysis / review
https://doi.org/10.5414/cpp42139 - Caus, M.N., Lupoae, M. and Chitescu, C.L (2026) 'Efficacy and Safety of Herbal Supplements with Anxiolytic, Antidepressant, and Sedative Action: A Review of Clinical Data and Toxicological Risks', Pharmaceuticals, 19(3), pp. 399. doi:10.3390/ph19030399 Meta-analysis / review
https://doi.org/10.3390/ph19030399
- Karalija, E. and Muratovic, E. and Tarkowski, P. and Zeljkovic, S.C (2017) 'Variation in Phenolic Composition of Knautia arvensis in Correlation with Geographic Area and Plant Organ', Natural Product Communications, 12(4), pp. 545-548. doi:10.1177/1934578x1701200421 Preclinical
https://doi.org/10.1177/1934578x1701200421 - Moldoch, J. and Szajwaj, B. and Masullo, M. and Pecio, L. and Oleszek, W. and Piacente, S. and Stochmal, A (2011) 'Phenolic constituents of Knautia arvensis aerial parts', Natural Product Communications, 6(11), pp. 1627-1630. doi:10.1177/1934578x1100601117 Preclinical
https://doi.org/10.1177/1934578x1100601117 - Plouvier, V (1971) 'Research on heterosides: knautioside and saponosides from Knautia arvensis and related glycosides', Comptes Rendus de l'Academie des Sciences, Serie D, 272(10), pp. 1443-1446. Preclinical
https://scholar.google.com/scholar?q=Research%20on%20heterosides%3A%20knautioside%20and%20saponosides%20from%20Knautia%20arvensis%20and%20related%20glycosides - Chrzaszcz, M. and Miazga-Karska, M. and Klimek, K. and Dybowski, M.P. and Typek, R. and Tchorzewska, D. and Dos Santos Szewczyk, K (2023) 'The Anti-Acne Potential and Chemical Composition of Knautia Species (Caprifoliaceae) Extracts', International Journal of Molecular Sciences, 24(11), pp. 9188. doi:10.3390/ijms24119188 Preclinical
https://doi.org/10.3390/ijms24119188 - Skala, E. and Szopa, A (2023) 'Dipsacus and Scabiosa Species - The Source of Specialized Metabolites with High Biological Relevance: A Review', Molecules, 28(9), pp. 3754. doi:10.3390/molecules28093754 Meta-analysis / review
https://doi.org/10.3390/molecules28093754 - Pinto, D.C.G.A. and Rahmouni, N. and Beghidja, N. and Silva, A.M.S (2018) 'Scabiosa Genus: A Rich Source of Bioactive Metabolites', Medicines (Basel), 5(4), pp. 110. doi:10.3390/medicines5040110 Meta-analysis / review
https://doi.org/10.3390/medicines5040110 - Albayrak, S. and Aksoy, A. and Yilmaz, M.A. and Beyzi, E (2024) 'Investigation of Phytochemical, Antioxidant and Antidiabetic Potentials of Scabiosa L. (Caprifoliaceae) Species with Chemometric Methods', Chemistry and Biodiversity, 21(2), pp. e202301652. doi:10.1002/cbdv.202301652 Preclinical
https://doi.org/10.1002/cbdv.202301652 - Saar-Reismaa, P. and Koel, M. and Tarto, R. and Vaher, M (2022) 'Extraction of bioactive compounds from Dipsacus fullonum leaves using deep eutectic solvents', Journal of Chromatography A, 1677, pp. 463330. doi:10.1016/j.chroma.2022.463330 Preclinical
https://doi.org/10.1016/j.chroma.2022.463330
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.