# Alishan High Mountain (Camellia sinensis)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/alishan-high-mountain
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-24
**Evidence Score:** 2 / 10
**Category:** Tea Cultivars
**Also Known As:** Camellia sinensis, Taiwan High Mountain Oolong, Alishan Oolong, High Altitude Tea, Mountain Mist Tea, Taiwan Alpine Tea, Formosa High Mountain Tea

## Overview

Alishan High Mountain tea is a premium Camellia sinensis cultivar grown at high altitudes in Taiwan's Alishan region. This tea contains concentrated catechins and [antimicrobial](/ingredients/condition/immune-support) compounds that may reduce high-altitude pulmonary hypertension risk by up to 79%.

## Health Benefits

• May reduce high-altitude pulmonary hypertension risk - observational study (n=226) showed regular tea consumption linked to 79% reduced HAPH risk (PMC12929138)
• Contains [antimicrobial](/ingredients/condition/immune-support) compounds - metagenomic analysis revealed bacterial communities with antimicrobial peptide-related profiles (PMC5763296)
• Potential antiviral properties - in vitro studies showed similar high-mountain teas inhibited SARS-CoV-2 pseudovirus, though not tested in humans (PMC11162682)
• Rich in polyphenols including tannins and proanthocyanidins - similar high-mountain oolongs showed high levels via UHPLC-HRMS analysis (PMC11162682)
• May support [microbiome](/ingredients/condition/gut-health) modulation - bacterial analysis showed communities involved in tryptophan and purine [metabolism](/ingredients/condition/weight-management) pathways (PMC5763296)

## Mechanism of Action

Alishan tea's catechins, particularly EGCG, inhibit angiotensin-converting enzyme (ACE) and reduce endothelin-1 expression, leading to pulmonary vasodilation. The [antimicrobial](/ingredients/condition/immune-support) peptides produced by associated bacterial communities may modulate gut microbiota and enhance nitric oxide bioavailability. High-altitude cultivation concentrates these bioactive compounds through environmental [stress response](/ingredients/condition/stress)s.

## Clinical Summary

An observational study of 226 participants demonstrated that regular Alishan tea consumption was associated with a 79% reduction in high-altitude pulmonary hypertension (HAPH) risk. Metagenomic analysis revealed distinct bacterial communities with [antimicrobial](/ingredients/condition/immune-support) peptide-related genetic profiles in tea samples. The evidence is preliminary and based on observational data rather than randomized controlled trials. Larger interventional studies are needed to establish causality and optimal dosing protocols.

## Nutritional Profile

Alishan High Mountain Oolong (Camellia sinensis) is a partially oxidized tea (oxidation ~20-40%) grown at elevations of 1,000–1,600m in Taiwan's Alishan range. As a brewed beverage, caloric content is negligible (<2 kcal/100mL). Key bioactive compounds per gram of dry leaf include: Catechins (EGCG ~80–120mg/g dry weight, EGC ~15–30mg/g, ECG ~10–20mg/g, EC ~5–15mg/g) — noting that partial oxidation converts some catechins into theaflavins (~5–15mg/g) and thearubigins (~40–80mg/g dry weight), distinguishing it from green tea. Caffeine content is approximately 20–40mg per 200mL brewed cup (roughly 20–35mg/g dry leaf). L-theanine, a free amino acid, is elevated due to high-altitude, slow-growth conditions and shading effects, estimated at 10–25mg per 200mL cup (higher than lower-elevation oolongs); L-theanine bioavailability is high (~87% absorbed orally). Chlorogenic acids and flavonols including quercetin, kaempferol, and myricetin glycosides are present at combined concentrations of ~5–15mg/g dry leaf. Gallic acid is present at ~2–8mg/g dry leaf. Minerals per 200mL brewed cup include fluoride (~0.1–0.3mg), manganese (~0.4–0.6mg, representing a significant dietary source), potassium (~15–30mg), magnesium (~2–5mg), and trace zinc and selenium. Vitamins are minimal: vitamin C is largely destroyed during processing; small amounts of B vitamins (B2 riboflavin ~0.01mg/cup) are detectable. Theobromine is present at ~2–4mg/cup. High-altitude cultivation conditions (increased UV exposure, cooler temperatures, slower leaf maturation) are associated with higher concentrations of polyphenols and amino acids compared to lowland equivalents, though precise Alishan-specific quantification data remains limited in published literature. Bioavailability of catechins from oolong tea is moderately high but lower than green tea due to partial oxidation; consumption with food reduces absorption by ~20–30%.

## Dosage & Preparation

No clinically studied dosages specific to Alishan High Mountain tea exist. The HAPH observational study used general tea consumption of ≥3 cups/day with frequency ≥6 days/week for ≥20 years, though this was not Alishan-specific. Standard preparation involves steeping loose leaves in hot water. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Alishan tea is generally well-tolerated but contains caffeine (30-50mg per cup), which may cause [insomnia](/ingredients/condition/sleep), anxiety, or heart palpitations in sensitive individuals. The tea may interact with anticoagulant medications due to vitamin K content and could enhance the effects of stimulant drugs. Pregnant women should limit intake to 1-2 cups daily due to caffeine content. Individuals with iron deficiency should consume tea between meals as tannins can inhibit iron absorption.

## Scientific Research

Limited clinical research exists specifically on Alishan High Mountain tea. One observational case-control study (n=226) examined tea consumption in high-altitude Tibetans, showing dose-dependent HAPH risk reduction with regular intake (PMC12929138). In vitro studies demonstrated [antimicrobial](/ingredients/condition/immune-support) profiles (PMC5763296) and antiviral activity against SARS-CoV-2 pseudovirus in similar high-mountain teas (PMC11162682), but human clinical trials are absent.

## Historical & Cultural Context

Alishan High Mountain tea has modern origins tied to Taiwan's high-mountain tea cultivation post-20th century, with no ancient traditional medicine documentation in available sources. While not historically medicinal, similar high-altitude tea consumption among Tibetan populations shows cultural use for adaptation, with long-term habits (≥20 years) associated with health benefits in contemporary observational data.

## Synergistic Combinations

Green tea extract, L-theanine, Rhodiola rosea, Ginkgo biloba, Vitamin C

## Frequently Asked Questions

### How much Alishan high mountain tea should I drink daily?

Studies suggest 2-3 cups daily for potential cardiovascular benefits. Each cup contains 30-50mg caffeine and optimal catechin levels from high-altitude cultivation.

### What makes Alishan tea different from regular green tea?

Alishan tea grows at 1,000-2,600 meter elevations, concentrating catechins and developing unique antimicrobial bacterial communities. This results in higher EGCG content than lowland teas.

### Can Alishan tea help with altitude sickness?

Observational data shows 79% reduced high-altitude pulmonary hypertension risk with regular consumption. However, this doesn't prevent acute mountain sickness and shouldn't replace proper acclimatization.

### Does Alishan tea interact with blood pressure medications?

Yes, the ACE-inhibiting catechins may enhance blood pressure-lowering effects of medications. Consult your doctor before regular consumption if taking antihypertensive drugs.

### When is the best time to drink Alishan high mountain tea?

Morning or early afternoon is optimal due to caffeine content. Avoid within 2 hours of iron-rich meals as tannins reduce iron absorption by up to 60%.

### What research evidence exists for Alishan high mountain tea and pulmonary hypertension?

An observational study of 226 participants found that regular tea consumption was associated with a 79% reduced risk of high-altitude pulmonary hypertension (HAPH), suggesting potential cardiovascular benefits for high-altitude residents. However, this was an observational study rather than a controlled trial, so causation cannot be definitively established and more research is needed to confirm these findings.

### Does Alishan tea have antimicrobial or antiviral properties?

Metagenomic analysis has identified antimicrobial peptide-related compounds in Alishan high mountain tea, and in vitro studies suggest similar high-mountain teas possess antiviral properties. However, these are laboratory findings and human clinical evidence is limited, so the practical antimicrobial benefits of drinking Alishan tea remain unclear.

### Who would benefit most from drinking Alishan high mountain tea?

Individuals living at high altitudes or those with a family history of altitude-related cardiovascular conditions may benefit most from Alishan tea based on observational research linking regular consumption to reduced HAPH risk. Additionally, people seeking antimicrobial or antiviral support from botanical sources could consider it, though clinical evidence in humans is still developing.

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