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Huang Qin (Scutellaria baicalensis)

TCM 'Heat-clearing' root, baicalin and wogonin have antiviral activity in vitro; clinical evidence preliminary.

Why

Huang Qin (Scutellaria baicalensis, Chinese skullcap) is a TCM 'Heat-clearing' root used in formulas for respiratory and inflammatory complaints. Distinct from American skullcap (Scutellaria lateriflora, separate card). Active flavonoids baicalin, baicalein and wogonin have substantial preclinical literature for antimicrobial, anti-inflammatory and antiviral activity. Modern clinical trials are mostly Chinese and small.

How it works

Baicalein and wogonin inhibit lipoxygenase and modulate NF-κB. Antiviral activity against influenza, dengue, and other RNA viruses documented in vitro. CYP3A4 inhibition is real and clinically relevant.

Expected onset · Acute use in TCM-prescribed contexts; chronic use not characterised in modern literature

How to take

Dosage

Traditional decoction: 3–10 g/day. Standardised extract: 200–500 mg/day.

Timing

Divided 2–3 times daily

On the label

Scutellaria baicalensis root (Chinese skullcap, huang qin), distinct from American skullcap. Stated baicalin content.

Ideal for

Adults exploring TCM-rooted options under specialist supervision; clinical contexts (allergic, viral, gastrointestinal) where prescribed by a TCM practitioner.

Safety

Significant CYP3A4 inhibition, interactions with statins, ciclosporin, calcium channel blockers, midazolam, others. Rare hepatotoxicity case reports. Discontinue with any unexplained transaminase elevation. Avoid in pregnancy and breastfeeding. Confirm species, distinct from American Scutellaria lateriflora.

Evidence

At a glance

No regulator anchor. Preliminary, RCTs exist in non-tier-1 journals but are small or short-duration. No Cochrane review, EMA monograph or EFSA-authorised claim covers the indication. Preclinical and pharmacological literature is substantial; clinical-trial replication in Western evidence base is limited.

Limitations

Preliminary, RCTs exist in non-tier-1 journals but are small or short-duration. No Cochrane review, EMA monograph or EFSA-authorised claim covers the indication.

Where to get it

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