Omnia SanaPlant Comparison
Hawthorn vs Perforate St John’s-wort
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
Hawthorn and Perforate St John’s-wort: they share 4 indicated uses (arthritis / joint pain, inflammation (general), insomnia / sleeplessness, …); 3 pharmacological actions in common.
Evidence face-off - shared uses
| Condition | Hawthorn | Perforate St John’s-wort | Verdict |
|---|---|---|---|
| Arthritis / joint pain | 1/10 | 1/10 | Comparable evidence |
| Inflammation (general) | 1/10 | 1/10 | Comparable evidence |
| Insomnia / sleeplessness | 1/10 | 1/10 | Comparable evidence |
| Skin irritation | 1/10 | 1/10 | 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
Principal cardioprotective and antioxidant polyphenols characterised by chemical profiling of leaf, flower and fruit.
Contribute to the vasoactive and antioxidant effects, the basis for extract standardisation.
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.
Pharmacological Actions
Traditional & Indicated Uses
inferred from anti-inflammatory action
inferred from anticancer action
inferred from anti-inflammatory action
inferred from sedative action
inferred from anti-inflammatory action
inferred from antiviral action
inferred from anti-inflammatory action
inferred from sedative action
inferred from anti-inflammatory action
Safety, Cautions & Contraindications
Generally well tolerated. Hawthorn should not replace prescribed cardiac medications without medical supervision. May potentiate the effects of cardiac glycosides (digoxin), antihypertensive drugs, and coronary dilators. Not recommended during pregnancy and breastfeeding due to insufficient safety data. Mild side effects (nausea, dizziness, GI upset) occasionally reported.
Duke (2002) rates hawthorn as +++ - one of the most clinically supported cardiovascular herbs. Clinical evidence (score 2) supports its use for decreasing cardiac output (NYHA functional Stage II heart failure), as recognized by Commission E. Key activities include vasodilation, positive inotropic effects, and antioxidant protection of vascular tissue. Dose: 160–900 mg standardized leaf/flower extract (containing 18.75% oligomeric proanthocyanidins) daily. Duke emphasizes that hawthorn should not replace conventional heart failure therapy, and therapeutic effects may take 4–8 weeks to emerge. Mild interactions with cardiac glycosides (digitalis) are possible (Duke, 2002).
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).
External Ids
Botanical Description
Small deciduous tree or large shrub, densely thorny, with deeply lobed, glossy leaves (more deeply cut than midland hawthorn). Clusters of small, five-petalled white flowers with a strong, musky scent appear in spring ('May blossom'), followed by small red berries (haws), each containing a single seed (nutlet) - the origin of the species name monogyna.[4]
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]
Habitat
One of the commonest hedgerow and scrub trees of Europe, growing in hedgerows, woodland edges, scrub and pasture on a wide range of soils; native to Europe, North Africa and Western Asia.[4]
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]
Harvesting
Flowers are picked as they open in May, leaves are picked with the young flowering shoots, and the ripe red berries (haws) are gathered in autumn after the first frosts soften them slightly; all three parts are traditionally combined.[4]
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]
Harvest Readiness
[13]
[14]
[15]
[15]
Traditional Uses
Common hawthorn shares the same long cardiovascular and calming tradition as midland hawthorn, used across European herbal medicine as a heart tonic for mild circulatory complaints, palpitations and nervous tension, and remains one of the most clinically studied cardiovascular botanicals.[4]
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]
Preparations
Leaf-and-flower extract standardised to flavonoid or procyanidin content, taken as tablets or capsules; the best-studied clinical form.
Flowering-top extract standardised to hypericin and/or hyperforin content, taken as tablets or capsules; the best-studied clinical form for mood support.
Dosage
The EU herbal monograph on Crataegus spp., folium cum flore gives dry extracts in divided daily doses of 240-900 mg (single dose 80-450 mg) or, for one quantified extract, 570-1750 mg daily (single dose 190-350 mg), in adults and elderly. If symptoms persist longer than 2 weeks a doctor should be consulted, and hawthorn is never used as a substitute for prescribed heart medication without medical supervision. Educational reference only, not a prescription.
The EU herbal monograph gives 1-2 g of the comminuted leaf and flower in 150 mL of boiling water as an infusion, up to 4 times daily (maximum 6 g daily), in adults and elderly. Educational reference only, not a prescription.
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.
References
Drug Class Interactions
Lookalikes Review
Pairings
Not documented
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.
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.
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.
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.
References & Sources
- Ez-Zahra Amrati, F., Mssillou, I., Boukhira, S., Djiddi Bichara, M. et al (2024) 'Phenolic Composition of Crataegus monogyna Jacq. Extract and Its Anti-Inflammatory, Hepatoprotective, and Antileukemia Effects', Pharmaceuticals (Basel), 17(6), pp. 786. doi:10.3390/ph17060786 Preclinical
https://doi.org/10.3390/ph17060786 - Lis, M., Szczypka, M., Suszko-Pawłowska, A., Sokół-Łętowska, A. et al (2019) 'Hawthorn (Crataegus monogyna) Phenolic Extract Modulates Lymphocyte Subsets and Humoral Immune Response in Mice', Planta Medica, 86(2), pp. 160-168. doi:10.1055/a-1045-5437 Preclinical
https://doi.org/10.1055/a-1045-5437 - Paun, G., Neagu, E., Albu, C., Alecu, A. et al (2024) 'Antioxidant and Antidiabetic Activity of Crataegus monogyna L. and Cornus mas Fruit Extracts', Molecules, 29(15), pp. 3595. doi:10.3390/molecules29153595 Preclinical
https://doi.org/10.3390/molecules29153595 - Nabavi, S.F., Habtemariam, S., Ahmed, T., Sureda, A., Daglia, M. and Sobarzo-Sanchez, E (2015) 'Polyphenolic Composition of Crataegus monogyna Jacq.: From Chemistry to Medical Applications', Nutrients, 7(9), pp. 7708-7728. doi:10.3390/nu7095361 Meta-analysis / review
https://doi.org/10.3390/nu7095361 - Belabdelli, F., Bekhti, N., Piras, A., Benhafsa, F.M., Ilham, M. and Adil, S (2021) 'Chemical composition, antioxidant and antibacterial activity of Crataegus monogyna leaves' extracts', Natural Product Research, 36(12), pp. 3234-3239. doi:10.1080/14786419.2021.1958215 Preclinical
https://doi.org/10.1080/14786419.2021.1958215 - Jalali, A.S., Hasanzadeh, S. and Malekinejad, H (2012) 'Crataegus monogyna aqueous extract ameliorates cyclophosphamide-induced toxicity in rat testis: stereological evidences', Acta Medica Iranica, 50(1), pp. 1-8. Preclinical
https://scholar.google.com/scholar?q=Crataegus%20monogyna%20aqueous%20extract%20ameliorates%20cyclophosphamide-induced%20toxicity%20in%20rat%20testis%3A%20stereological%20evidences - Martin-Garcia, B., Razola-Diaz, M.D.C., Gomez-Caravaca, A.M., Benitez, G. and Verardo, V (2021) 'Setup of an Ultrasonic-Assisted Extraction to Obtain High Phenolic Recovery in Crataegus monogyna Leaves', Molecules, 26(15), pp. 4536. doi:10.3390/molecules26154536 Preclinical
https://doi.org/10.3390/molecules26154536 - Arslan, R., Bektas, N., Bor, Z. and Sener, E (2014) 'Evaluation of the antithrombotic effects of Crataegus monogyna and Crataegus davisii in the carrageenan-induced tail thrombosis model', Pharmaceutical Biology, 53(2), pp. 275-279. doi:10.3109/13880209.2014.914957 Preclinical
https://doi.org/10.3109/13880209.2014.914957 - Edwards, J.E., Brown, P.N., Talent, N., Dickinson, T.A. and Shipley, P.R (2012) 'A review of the chemistry of the genus Crataegus', Phytochemistry, 79, pp. 5-26. doi:10.1016/j.phytochem.2012.04.006 Meta-analysis / review
https://doi.org/10.1016/j.phytochem.2012.04.006 - Jarzycka, A., Lewinska, A., Gancarz, R. and Wilk, K.A (2013) 'Assessment of extracts of Helichrysum arenarium, Crataegus monogyna, Sambucus nigra in photoprotective UVA and UVB; photostability in cosmetic emulsions', Journal of Photochemistry and Photobiology B: Biology, 128, pp. 50-57. doi:10.1016/j.jphotobiol.2013.07.029 Preclinical
https://doi.org/10.1016/j.jphotobiol.2013.07.029 - Lucconi, G., Chlapanidas, T., Martino, E., Gaggeri, R., Perteghella, S. and Rossi, D (2013) 'Formulation of microspheres containing Crataegus monogyna Jacq. extract with free radical scavenging activity', Pharmaceutical Development and Technology, 19(1), pp. 65-72. doi:10.3109/10837450.2012.752387 Preclinical
https://doi.org/10.3109/10837450.2012.752387 - Zorniak, M., Szydlo, B. and Krzeminski, T.F (2017) 'Crataegus special extract WS 1442: up-to-date review of experimental and clinical experiences', Journal of Physiology and Pharmacology, 68(4), pp. 521-526. Meta-analysis / review
https://scholar.google.com/scholar?q=Crataegus%20special%20extract%20WS%201442%3A%20up-to-date%20review%20of%20experimental%20and%20clinical%20experiences - Woodland Trust 'Hawthorn (Crataegus monogyna)'. Available at: https://www.woodlandtrust.org.uk/trees-woods-and-wildlife/british-trees/a-z-of-british-trees/hawthorn/ Traditional / reference
https://www.woodlandtrust.org.uk/trees-woods-and-wildlife/british-trees/a-z-of-british-trees/hawthorn/ - Plants For A Future 'Crataegus monogyna (Common Hawthorn, Oneseed Hawthorn)'. Available at: https://pfaf.org/user/Plant.aspx?LatinName=Crataegus+monogyna Traditional / reference
https://pfaf.org/user/Plant.aspx?LatinName=Crataegus+monogyna - European Medicines Agency (2016) 'European Union herbal monograph on Crataegus spp., folium cum flore'. Traditional / reference
https://scholar.google.com/scholar?q=European%20Union%20herbal%20monograph%20on%20Crataegus%20spp.%2C%20folium%20cum%20flore - Pittler, M.H., Guo, R. and Ernst, E (2008) 'Hawthorn extract for treating chronic heart failure'. Traditional / reference
https://scholar.google.com/scholar?q=Hawthorn%20extract%20for%20treating%20chronic%20heart%20failure - Royal Botanic Gardens, Kew (n.d.). Available at: https://powo.science.kew.org Traditional / reference
https://powo.science.kew.org - 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 - Tankanow, R., Tamer, H.R., Streetman, D.S., Smith, S.G., Welton, J.L., Annesley, T., Aaronson, K.D. and Bleske, B.E (2003) 'Interaction study between digoxin and a preparation of hawthorn (Crataegus oxyacantha)', Journal of Clinical Pharmacology, 43(6), pp. 637-642. doi:10.1177/0091270003253417 Randomized trial
https://doi.org/10.1177/0091270003253417 - Pittler, M.H., Guo, R. and Ernst, E (2008) 'Hawthorn extract for treating chronic heart failure', Cochrane Database of Systematic Reviews, 2008(1), pp. CD005312. doi:10.1002/14651858.CD005312.pub2 Meta-analysis / review
https://doi.org/10.1002/14651858.CD005312.pub2 - Pittler, M.H., Guo, R. and Ernst, E (2008) 'Hawthorn extract for treating chronic heart failure', Cochrane Database of Systematic Reviews, 2008(1), pp. CD005312. doi:10.1002/14651858.CD005312.pub2 Meta-analysis / review
https://doi.org/10.1002/14651858.CD005312.pub2 - Ghasemzadeh Rahbardar, M. and Hosseinzadeh, H (2024) 'Therapeutic potential of hypnotic herbal medicines: A comprehensive review', Phytotherapy Research, 38(6), pp. 3037-3059. doi:10.1002/ptr.8201 Meta-analysis / review
https://doi.org/10.1002/ptr.8201 - Block, K.I., Gyllenhaal, C. and Mead, M.N (2004) 'Safety and efficacy of herbal sedatives in cancer care', Integrative Cancer Therapies, 3(2), pp. 128-148. doi:10.1177/1534735404265003 Meta-analysis / review
https://doi.org/10.1177/1534735404265003
- 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 - Plants For A Future 'Hypericum perforatum (St John's Wort)'. Available at: https://pfaf.org/user/Plant.aspx?LatinName=Hypericum+perforatum Traditional / reference
https://pfaf.org/user/Plant.aspx?LatinName=Hypericum+perforatum - 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
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.