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Gui Fei Oolong

Gui Fei Oolong Caffeine Content

25-35 mg per cup

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25-35 caffeinePage.mgPerCup

Moderate
0 mg50 mg100 mg

How does Gui Fei Oolong compare?

Gui Fei Oolong
30 mg
Coffee
95 mg
Black Tea (avg)
47 mg
Green Tea (avg)
35 mg
White Tea (avg)
25 mg
Herbal Tea
0 mg

Factors Affecting Caffeine Content

Brew Time

Longer steeping times extract more caffeine. A 1-minute steep may yield half the caffeine of a 5-minute steep.

Water Temperature

Hotter water extracts caffeine more quickly. Boiling water releases caffeine faster than cooler temperatures.

Leaf Amount

Using more tea leaves per cup increases caffeine content proportionally. Standard is 2-3 grams per 240ml cup.

Leaf Grade

Young buds and leaf tips contain more caffeine than mature leaves. Teas made from tips tend to be higher in caffeine.

L-Theanine Content

Caffeine (mg/cup)

25-35 mg

L-Theanine (mg/cup)

10-18 mg

Caffeine to L-Theanine ratio

0.6:1

L-theanine works synergistically with caffeine to promote calm alertness without jitters.

Best Time to Drink

Can be enjoyed any time, including evening

Very low caffeine content means most people can enjoy this tea at any time, including evening.

Compare with Similar Teas

TeaCaffeine (mg/cup) (mg/cup)
Gui Fei Oolong25-35 mg
Oolong Tea30-50 mg
Dan Cong (Phoenix Oolong)30-45 mg
Mi Lan Xiang (Honey Orchid) Dan Cong30-45 mg
Ali Shan Oolong25-40 mg
Da Hong Pao (Big Red Robe)25-40 mg
Dong Ding Oolong25-40 mg
Iron Goddess (Tie Guan Yin)25-40 mg
Li Shan (Pear Mountain) Oolong25-40 mg
View full Gui Fei Oolong profile

Frequently Asked Questions

How much caffeine is in Gui Fei Oolong?
Gui Fei Oolong contains 25-35 mg of caffeine per cup. This can vary depending on brewing time, water temperature, and leaf quantity.
Does Gui Fei Oolong have more caffeine than coffee?
Gui Fei Oolong has less caffeine (25-35 mg) than coffee (95 mg per cup), making it a gentler alternative.
Is Gui Fei Oolong safe to drink daily?
Gui Fei Oolong (25-35 mg per cup) is moderate in caffeine. Most adults can safely drink 4-6 cups daily.
How can I reduce caffeine in Gui Fei Oolong?
To reduce caffeine in Gui Fei Oolong: use cooler water, steep for less time, or use fewer leaves. The first infusion contains the most caffeine.
Can I drink Gui Fei Oolong during pregnancy?
During pregnancy, limit caffeine to under 200 mg/day. Gui Fei Oolong also contains L-theanine (10-18 mg), which may help with relaxation.