Panax quinquefolius · PhytoNexus

01 Identity and provenance

Accepted binomial: Panax quinquefolius
Common names: American Ginseng
Family (APG IV): Araliaceae
Part used: Root
Verification tier: Tier 2 · Verified Clinical columns reviewed and a source is on record.
Reviewer note (2026 audit): Reference not supplied - claim unverified against primary literature.

02 Constituent chemistry

Chemical class	Marker compound	Synthetic analogue in use
Triterpinoid saponins	Lipophil aglycone, hydrophiliccarbohydrate Root	none

The analogue column is what makes the interaction reasoning tractable: where a constituent has a marketed structural counterpart, the counterpart's interaction profile is the starting hypothesis for the plant.

Looking up structures and physicochemical properties from PubChem…

03 Stated application

Reported activity: Improve immunity,
Enhance cognitive functions
Marketed in: Natures Bounty American ginseng capsule,
GNC herbal plus American Gigsen
Reported adverse effects: Insomnia,Nervousness,Gastrointestinal upset

04 Interaction matrix

Source column, verbatim: Anticoagulants,MAO inhibitors, Antihypertensive inhibitors
Normalised onto 3 canonical drug classes below.

Curated from the reviewed source

Drug class	Severity	Mechanism type	Provenance	Expected effect
Monoamine oxidase inhibitors CNS	4Contraindicated	PD-additive	curated B	Hypertensive crisis, hyperpyrexia, serotonin syndrome, intracranial haemo…	why ▾
Class mechanism. Beta-carboline (harmine, harmaline) and related botanical alkaloids are themselves reversible MAO-A inhibitors. Combined with a prescribed MAOI, or with tyramine-rich food or sympathomimetics, the pressor and serotonergic reserve is abolished. Expected Hypertensive crisis, hyperpyrexia, serotonin syndrome, intracranial haemorrhage. Management Absolute contraindication. Apply the full MAOI dietary and drug restriction list to the botanical as well. Onset rapid Evidence B - reviewed clinical column, source pending Matched on “mao inhibitors” Find evidence for this pair Map this mechanism
Anticoagulants (vitamin-K antagonists, DOACs) Haemostasis	3Major	PD-additive + PK-CYP2C9	curated B	INR destabilisation in either direction; ecchymosis, epistaxis, gum bleed…	why ▾
Class mechanism. Coumarin-, salicylate- and coumestan-bearing botanicals add to vitamin-K-antagonist effect; several also compete for CYP2C9 and CYP3A4, raising S-warfarin exposure. Botanicals rich in vitamin K1 act in the opposite direction and blunt anticoagulation. Expected INR destabilisation in either direction; ecchymosis, epistaxis, gum bleeding, GI or intracranial haemorrhage. Management Do not start or stop the botanical without INR cover. Check INR at 3-5 days and again at 2 weeks. Document the product, batch and dose in the anticoagulation record. Onset rapid Evidence B - reviewed clinical column, source pending Matched on “anticoagulants” Find evidence for this pair Map this mechanism
Antihypertensives Cardiovascular	2Moderate	PD-additive	curated B	Orthostatic hypotension, dizziness, syncope and falls; or loss of blood-p…	why ▾
Class mechanism. Vasodilator, diuretic, ACE-inhibitory and calcium-antagonist activity in botanical extracts adds to prescribed blood-pressure lowering. A minority (ephedrine-, glycyrrhizin- and caffeine-bearing) act in the opposite direction and antagonise control. Expected Orthostatic hypotension, dizziness, syncope and falls; or loss of blood-pressure control with pressor botanicals. Management Home BP log for 2 weeks after any change. Warn about postural symptoms; review in the elderly and in those on multiple agents. Onset rapid Evidence B - reviewed clinical column, source pending Matched on “antihypertensive inhibitors” Find evidence for this pair Map this mechanism

Predicted from constituent chemistry

These edges are not clinical findings. Each one is a rule inference: a constituent class in this plant is known to act on a target that the drug class also acts on. They are shown because a blank cell reads as “safe”, and for a Tier 1 entry a blank cell only means “not yet looked at”. Treat them as a literature-search agenda, not as a warning.

Drug class	Severity	Mechanism type	Provenance	Expected effect
Antidiabetic drugs (insulin, sulfonylureas, biguanides, GLP-1, SGLT2) Endocrine	3Major	PD-additive	predicted D	Symptomatic hypoglycaemia, sweating, tremor, confusion; severe events rep…	why ▾
Chemistry of this pair. Triterpene and steroidal saponins alter membrane permeability, inhibit platelet aggregation and show weak steroid-receptor affinity. Class mechanism. Hypoglycaemic botanicals act through insulin secretagogue, insulin-sensitising, alpha-glucosidase-inhibiting or glucose-transport routes. Added to a titrated pharmacological regimen the effects summate rather than plateau. Expected Symptomatic hypoglycaemia, sweating, tremor, confusion; severe events reported with insulin and sulfonylureas. Management Increase self-monitoring frequency for 2 weeks after starting or stopping. Anticipate a downward dose adjustment of insulin or sulfonylurea. Onset rapid Evidence D - in silico rule prediction only Find evidence for this pair Map this mechanism
Antiplatelet agents Haemostasis	3Major	PD-additive	predicted D	Prolonged bleeding time, surgical and post-procedural bleeding, bruising,…	why ▾
Chemistry of this pair. Triterpene and steroidal saponins alter membrane permeability, inhibit platelet aggregation and show weak steroid-receptor affinity. Class mechanism. Organosulfur compounds, gingerols, salicylates, ginkgolides and eugenol inhibit thromboxane A2 synthesis, platelet aggregation and PAF-mediated activation, duplicating the pharmacology of aspirin and P2Y12 blockers. Expected Prolonged bleeding time, surgical and post-procedural bleeding, bruising, haematuria. Management Stop the botanical 7-14 days before elective surgery or neuraxial anaesthesia. Record it on the pre-operative medicines list. Onset rapid Evidence D - in silico rule prediction only Find evidence for this pair Map this mechanism
Hormonal therapy, oral contraceptives and HRT Endocrine	3Major	PK-CYP3A4 induction + PD-oestrogenic	predicted D	Breakthrough bleeding and contraceptive failure; unpredictable effect in …	why ▾
Chemistry of this pair. Triterpene and steroidal saponins alter membrane permeability, inhibit platelet aggregation and show weak steroid-receptor affinity. Class mechanism. CYP3A4-inducing botanicals accelerate ethinylestradiol and progestin clearance. Separately, isoflavone, lignan and coumestan phyto-oestrogens bind oestrogen receptors and may add to or compete with prescribed hormones. Expected Breakthrough bleeding and contraceptive failure; unpredictable effect in hormone-sensitive malignancy. Management Advise a second, non-hormonal contraceptive method. Avoid phyto-oestrogens in oestrogen-receptor-positive breast cancer without oncology advice. Onset delayed Evidence D - in silico rule prediction only Find evidence for this pair Map this mechanism

05 Hazard register

The audit recorded no hazard beyond the interaction profile. The controlled-vocabulary field reads not assessed, which means the assessment has not been done rather than that it came back clear.

06 Confusable material

These entries could be mistaken for this one in trade, in the herbarium, or in a prescription. Powdered material is often indistinguishable, so the check is macroscopic, microscopic and chromatographic rather than nominal.

Panax ginseng Ginseng	Araliaceae	Same genus (Panax)
Panax notoginseng Notoginseng	Araliaceae	Same genus (Panax)
Eleutherococcus senticosus Siberian Ginseng	Araliaceae	Shares the common name "ginseng"

07 Mechanism map

Chemistry sorts to the left, pharmacology to the right. Dashed edges are predicted. Drag nodes, scroll to zoom, export at 3× for a figure.

species

chemical class

marker compound

drug class

expected effect

hazard

08 Open literature

Abstract-scoped query built from this binomial, its common names and its marker compounds, run live against Europe PMC, PubMed and OpenAlex, then ranked locally against an evidence hierarchy.

Checking openFDA spontaneous reports…

09 Isomechanistic neighbours

Species whose interaction profile overlaps this one, ranked by shared severity weight rather than by count — a shared contraindication counts for more than a shared minor signal. Practical use: these are the plants you should not stack with this one, because the mechanisms summate.

Species	Family	Shared classes	Jaccard
Panax ginseng Ginseng	Araliaceae	6	0.60
Chlorophytum borivilianum Safed Musli	Asparagaceae	5	0.63
Phyllanthus amarus Bhui Amla	Phyllanthaceae	5	0.38
Silybum marianum Milk Thistle	Asteraceae	4	0.40
Vinca minor Lesser Periwinkle	Apocynaceae	4	0.40
Aesculus hippocastanum Horse Chestnut	Sapindaceae	4	0.67

10 References and notes

No citation is on record for this entry. That is itself the finding: the audit flagged it, and it is why the entry does not carry an A evidence grade.

Curator notes

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