healing-protective
Hypericum perforatum L.
The Sun-Threaded Herb
Crystalis is a reference resource for herbal, crystal, and somatic practice.
This library is designed to help readers orient, compare, and research. It is not a substitute for medical care or practitioner judgment.
Botanical / meta
Sun-bright perennial in the Hypericaceae family, worked from the flowering tops and, in oil, from the fresh blossom material. Hypericum perforatum carries small yellow flowers with dark gland-dots and perforated-looking leaves. The plant has two distinct medicine lanes: internal mood support and external nerve-soothing oil.
Hypericum perforatum L. (Hypericaceae), commonly known as St. John's wort or hypericum, is a perennial herb native to Europe, Western Asia, and North Africa, now widely naturalized and considered invasive in parts of Australia and western North America. The flowering tops (buds, flowers, upper leaves) are the primary medicinal material, harvested at peak bloom around the summer solstice. The species is identifiable by translucent oil glands visible when leaves are held to light (the "perforations" of its Latin name) and black dots on petal margins containing the red pigment hypericin. The two principal bioactive compound classes are phloroglucinol derivatives and naphthodianthrones. Hyperforin, a prenylated acylphloroglucinol present at 2 to 4% in flowering tops, is the primary antidepressant compound. The naphthodianthrone hypericin (0.06 to 0.4%) is the characteristic red pigment, functioning as a photosensitizer, mild MAO inhibitor, and sigma receptor ligand. Pseudohypericin and adhyperforin are structurally related secondary actives. The flavonoid fraction includes rutin, hyperoside, isoquercitrin, quercitrin, quercetin, and the biflavonoid amentoflavone. Proanthocyanidins (6 to 15%) and phenylpropanoids (chlorogenic acid, caffeic acid) complete the phytochemical profile. Hyperforin's antidepressant mechanism is unique in all of pharmacology. It activates TRPC6 (Transient Receptor Potential Canonical 6) cation channels, as elucidated by Leuner et al. (2007). TRPC6 activation increases intracellular sodium, which disrupts the sodium gradient required for monoamine reuptake transporters. This produces simultaneous reuptake inhibition of serotonin, norepinephrine, dopamine, GABA, and L-glutamate. No synthetic antidepressant inhibits all five neurotransmitter systems through a single mechanism. Hypericin provides secondary antidepressant activity through mild inhibition of both MAO-A and MAO-B (preventing enzymatic degradation of monoamines), though this effect at clinical doses is modest compared to pharmaceutical MAOIs. Hypericin also shows affinity for sigma-1 receptors, which modulate NMDA glutamate signaling and neuroplasticity. Multiple Cochrane systematic reviews (Linde et al.) have established that standardized St. John's wort extracts are superior to placebo for mild-to-moderate depression and comparable in efficacy to SSRIs (fluoxetine, sertraline, citalopram) with significantly fewer side effects and lower dropout rates. Zirak et al. (2018, Journal of Cellular Physiology, 234(6), 8496-8508; DOI: 10.1002/jcp.27781) confirmed efficacy equivalent to SSRIs and documented emerging evidence for anxiety, OCD, seasonal affective disorder, and menopausal symptoms. However, St. John's wort carries the most significant herb-drug interaction profile in all of phytotherapy. Hyperforin is a potent activator of PXR (Pregnane X Receptor), which transcriptionally upregulates CYP1A2, CYP2C9, CYP2C19, CYP3A4, CYP2E1, and P-glycoprotein, as comprehensively reviewed by Russo et al. (2013, Phytotherapy Research). This accelerates metabolism of co-administered drugs. Scholz et al. (2020, British Journal of Clinical Pharmacology) demonstrated that co-administration with rivaroxaban significantly reduced the anticoagulant's AUC and Cmax. Documented life-threatening interactions include organ transplant rejection (cyclosporine/tacrolimus), contraceptive failure (oral contraceptives), sub-therapeutic anticoagulation (warfarin, rivaroxaban), sub-therapeutic antiretroviral levels (HIV protease inhibitors), and serotonin syndrome (with SSRIs, SNRIs, MAOIs, triptans).
St. John's wort works because its chemistry is split across preparations. Hyperforin and related compounds matter to the internal mood story, while the fresh-infused red oil emphasizes the plant's external nerve and tissue lane. The herb only stays coherent when route is made explicit.
The Sun-Threaded Herb
St. John's Wort is usually reached for when low mood, nerve irritation, or post-bruised emotional states need more light and signal. Extract and oil-specific lane language is mandatory here, not generic happy herb talk.
Pharmacognosy
The measured compounds behind this herb's activity, with their typical concentration and the mechanism tradition and research associate with them.
PubChem:442506
Antidepressant (photosensitizing)
PubChem:442507
Antidepressant, antimicrobial
PubChem:6654
Anti-inflammatory
The practical read
St. John's Wort has enough evidence and enough risk to demand adult writing. Extract evidence for mild to moderate depression is real. Topical oil for nerve and tissue discomfort has its own traditional lane. Drug interactions are not an afterthought and should stand near the front of the page, not buried in a caution footer. This herb works when the writing respects both its brightness and its consequences.
Hypericum perforatum L. (Hypericaceae), commonly known as St. John's wort or hypericum, is a perennial herb native to Europe, Western Asia, and North Africa, now widely naturalized and considered invasive in parts of Australia and western North America. The flowering tops (buds, flowers, upper leaves) are the primary medicinal material, harvested at peak bloom around the summer solstice. The species is identifiable by translucent oil glands visible when leaves are held to light (the "perforations" of its Latin name) and black dots on petal margins containing the red pigment hypericin. The two principal bioactive compound classes are phloroglucinol derivatives and naphthodianthrones. Hyperforin, a prenylated acylphloroglucinol present at 2 to 4% in flowering tops, is the primary antidepressant compound. The naphthodianthrone hypericin (0.06 to 0.4%) is the characteristic red pigment, functioning as a photosensitizer, mild MAO inhibitor, and sigma receptor ligand. Pseudohypericin and adhyperforin are structurally related secondary actives. The flavonoid fraction includes rutin, hyperoside, isoquercitrin, quercitrin, quercetin, and the biflavonoid amentoflavone. Proanthocyanidins (6 to 15%) and phenylpropanoids (chlorogenic acid, caffeic acid) complete the phytochemical profile. Hyperforin's antidepressant mechanism is unique in all of pharmacology. It activates TRPC6 (Transient Receptor Potential Canonical 6) cation channels, as elucidated by Leuner et al. (2007). TRPC6 activation increases intracellular sodium, which disrupts the sodium gradient required for monoamine reuptake transporters. This produces simultaneous reuptake inhibition of serotonin, norepinephrine, dopamine, GABA, and L-glutamate. No synthetic antidepressant inhibits all five neurotransmitter systems through a single mechanism. Hypericin provides secondary antidepressant activity through mild inhibition of both MAO-A and MAO-B (preventing enzymatic degradation of monoamines), though this effect at clinical doses is modest compared to pharmaceutical MAOIs. Hypericin also shows affinity for sigma-1 receptors, which modulate NMDA glutamate signaling and neuroplasticity. Multiple Cochrane systematic reviews (Linde et al.) have established that standardized St. John's wort extracts are superior to placebo for mild-to-moderate depression and comparable in efficacy to SSRIs (fluoxetine, sertraline, citalopram) with significantly fewer side effects and lower dropout rates. Zirak et al. (2018, Journal of Cellular Physiology, 234(6), 8496-8508; DOI: 10.1002/jcp.27781) confirmed efficacy equivalent to SSRIs and documented emerging evidence for anxiety, OCD, seasonal affective disorder, and menopausal symptoms. However, St. John's wort carries the most significant herb-drug interaction profile in all of phytotherapy. Hyperforin is a potent activator of PXR (Pregnane X Receptor), which transcriptionally upregulates CYP1A2, CYP2C9, CYP2C19, CYP3A4, CYP2E1, and P-glycoprotein, as comprehensively reviewed by Russo et al. (2013, Phytotherapy Research). This accelerates metabolism of co-administered drugs. Scholz et al. (2020, British Journal of Clinical Pharmacology) demonstrated that co-administration with rivaroxaban significantly reduced the anticoagulant's AUC and Cmax. Documented life-threatening interactions include organ transplant rejection (cyclosporine/tacrolimus), contraceptive failure (oral contraceptives), sub-therapeutic anticoagulation (warfarin, rivaroxaban), sub-therapeutic antiretroviral levels (HIV protease inhibitors), and serotonin syndrome (with SSRIs, SNRIs, MAOIs, triptans).
St. John's Wort is usually reached for when low mood, nerve irritation, or post-bruised emotional states need more light and signal. Extract and oil-specific lane language is mandatory here, not generic happy herb talk.
Route panel
Evidence and safety may differ by preparation. Essential oil, tea, tincture, extract, infused oil, and topical use are not interchangeable.
Preparations
Standardized hypericin and hyperforin extract for mild-to-moderate low mood, with mandatory drug screening.
2 min
THE MOST SIGNIFICANT HERB-DRUG INTERACTION PROFILE IN PHYTOTHERAPY. PXR-mediated CYP450 induction can cause organ transplant rejection, contraceptive failure, HIV viral rebound, sub-therapeutic warfarin, cyclosporine, and digoxin levels. Never combine with SSRIs, MAOIs, or triptans.
Red-pigmented hypericin oil for nerve pain, bruising, and minor wound support -- external use only.
4 weeks
TOPICAL USE ONLY for this preparation. Photosensitivity is a real concern -- avoid sun exposure on treated areas. The infused oil and the standardized internal extract are completely different preparations with different evidence bases.
Beeswax-set topical salve concentrating hypericin for localized nerve discomfort and scar tissue.
30 min
External use only. Causes photosensitivity -- cover treated skin before sun exposure. Test on a small area first. Not a substitute for treating underlying nerve conditions.
Comparison
St. John's Wort is often grouped with saffron because both can show up in mood support conversations, but the interaction profile here is much heavier.
Choose St. John's Wort only when medication context and route are already clear. Keep the page honest about photosensitivity and CYP induction.
Quality
Fresh flowering tops should stain and smell alive, not tired or overaged.
Dried herb should still show color and active-looking material. Weak brown powder deserves suspicion.
St. John's Wort infused oil and extract belong to different lanes. Do not let one impersonate the evidence of the other.
St. John's Wort wants sun and enough room to naturalize. Harvest at peak flower before the tops lose potency.
Companion
With sunstone, St. John's Wort reads as mood support with enough voltage to matter, but only when the caution layer stays explicit.
St. John's wort and lepidolite form the mood-support pairing with the deepest pharmacological and mineralogical resonance in the library. Hypericum perforatum contains hypericin and hyperforin, compounds that inhibit reuptake of serotonin, norepinephrine, and dopamine through mechanisms distinct from pharmaceutical SSRIs. Multiple meta-analyses of randomized controlled trials document efficacy comparable to standard antidepressants for mild to moderate depression, with a more favorable side effect profile. Lepidolite, a lithium-bearing mica (potassium lithium aluminum silicate), is the only common mineral that contains lithium as an essential structural component. Lithium is the oldest and most proven mood stabilizer in psychiatric pharmacology. The pairing addresses mild to moderate depression and mood instability through complementary mechanisms. St. John's wort extract (standardized to hypericin or hyperforin, typically 300mg three times daily, requiring 4-6 weeks to reach full effect) taken consistently with lepidolite worn against the skin or held during daily check-in practices creates a sustained mood-support protocol. The hyperforin modulates monoamine reuptake. The lithium in lepidolite, while not bioavailable through skin contact at pharmaceutical doses, provides the energetic signature of mood stabilization that crystal healers have documented independently of its psychiatric use. The critical safety warning is non-negotiable: St. John's wort induces CYP3A4 and CYP2C9 liver enzymes, reducing the effectiveness of oral contraceptives, anticoagulants, immunosuppressants, HIV protease inhibitors, and many other medications. It also risks serotonin syndrome when combined with SSRIs, SNRIs, or triptans. This herb requires the same drug interaction screening as a pharmaceutical. Lepidolite carries no such contraindications. The pairing is powerful precisely because it is serious. Neither the herb nor the stone is casual mood support.
Crystal side
The deeper layer
Clinical and compound notes are included as a research layer, not as treatment instructions.
THE MOST SIGNIFICANT HERB-DRUG INTERACTION PROFILE IN ALL OF PHYTOTHERAPY. PXR-mediated CYP450 induction accelerates metabolism of co-administered drugs to sub-therapeutic levels. Documented life-threatening interactions include organ transplant rejection, contraceptive failure, and HIV viral rebound.
Lore & history
Cultural notes are presented as tradition and historical context, attributed to where they come from.
The Greek physician Dioscorides described Hypericum perforatum in De Materia Medica as a remedy for sciatica, burns, and fevers. He noted the plant's characteristic perforated leaves and recommended it as a diuretic and wound-healing herb applied topically with wine.
Europeans harvested St. John's Wort on the eve of the Feast of St. John the Baptist (June 23), hanging bundles over doorways and windows to ward off evil spirits and lightning strikes. The herb's red pigment (hypericin), which bleeds when crushed, was associated with the blood of the martyred saint.
The Swiss-German physician Paracelsus identified the perforated leaves of St. John's Wort as a signature indicating its usefulness for skin wounds and punctures, consistent with the Doctrine of Signatures. He also pioneered its use for melancholia, prefiguring its modern application as an antidepressant.
In Russian folk medicine, St. John's Wort earned the name zveroboy ('beast slayer') and was considered a remedy for nearly every ailment. Russian herbalists prepared oil macerations (red oil) by steeping the flowers in sunflower oil for treating wounds, burns, and gastric ulcers.
After European introduction, several Native American groups including the Cherokee and Montagnais adopted St. John's Wort for treating wounds, fevers, and snakebite. The Cherokee used root infusions as a fever reducer, while other nations applied the crushed herb externally as a poultice on cuts and abrasions.
Questions
St. John's Wort has the most significant herb-drug interaction profile in all of phytotherapy. It induces CYP3A4, CYP2C9, CYP1A2, and P-glycoprotein, accelerating metabolism of co-administered drugs to sub-therapeutic levels. Documented life-threatening interactions include organ transplant rejection (cyclosporine), contraceptive failure, HIV viral rebound (protease inhibitors), and serotonin syndrome with SSRIs, SNRIs, MAOIs, and triptans.
Clinical trials typically use 300 mg three times daily of extract standardized to 0.3% hypericin, for a total of 900 mg/day. Effects generally require four to six weeks to manifest fully. Photosensitivity from hypericin is dose-dependent, so minimize intense sun exposure. Always disclose use to every prescriber, as the CYP450 induction affects dozens of common medications.
Fresh flowering tops should produce a red stain when crushed between fingers, caused by hypericin in the translucent oil glands visible when leaves are held to light. Dried herb should retain some color and visible glandular dots. An extract that does not specify hypericin standardization (minimum 0.3%) lacks the quality benchmark used in clinical research.
Infused oil (Hypericum oil) is made by macerating fresh flowering tops in olive or sunflower oil, producing a deep red oil rich in hypericin used topically for nerve pain, burns, and bruises. Oral extract is a hydroethanolic or dried preparation standardized to hypericin and hyperforin for internal mood support. These are fundamentally different preparations with distinct evidence bases and should never be conflated.
Hypericin and hyperforin are both light-sensitive, so store all St. John's Wort preparations in amber or opaque containers away from direct light. Dried herb retains potency for about one year; tinctures and standardized extracts last two to three years when properly stored. Infused oil should be kept refrigerated and used within one year. Red color fading in any preparation signals degradation.
Sources & Citations
Peer-reviewed sources for the pharmacological and clinical claims on this page. Crystalis herb entries describe tradition and current research; they are reference, not medical advice.
SCI
SCI
Resource framing
Crystalis is a reference resource for herbal, crystal, and somatic practice.
This library is designed to help readers orient, compare, and research. It is not a substitute for medical care or practitioner judgment.
Clinical and compound notes are included as a research layer, not as treatment instructions.
Evidence and safety may differ by preparation. Essential oil, tea, tincture, extract, infused oil, and topical use are not interchangeable.