How much caffeine is in HEYTEA Signature Milk Tea?
中文：喜茶招牌奶绿
Caffeine content
100 mg
Typical range: 80–120 mg
per 16 fl oz (473 ml)
About this drink
HEYTEA uses a real-tea base (not powder) which puts caffeine higher than typical chain milk teas. Their cheese-topped variants add minimal caffeine since the cheese is dairy-only.
Ingredients: Steamed green tea base, milk, cheese foam optional
When will it clear your system?
100 mg with the slower tea-based absorption curve. Tea's L-theanine partially modulates caffeine's stimulant effect.
Based on caffeine's 5-hour half-life, a HEYTEA Signature Milk Tea consumed at 2:00 PM drops below the sleep-safe threshold (~20 mg) by approximately 01:37 the same evening.
Where this fits in a daily limit
That's about 50% of the 200 mg pregnancy guideline and 25% of the 400 mg general adult daily limit — comfortably moderate.
See our pregnancy caffeine guide or half-life sleep math for the deep dive.
How it compares
| Drink | Caffeine |
|---|---|
HEYTEA Signature Milk Tea HEYTEA | 100 mg |
| Naixue Cheese Tea Naixue | 100 mg |
| HEYTEA Macchiato (Tea + Espresso) HEYTEA | 150 mg |
| CoCo Red Tea Macchiato CoCo | 80 mg |
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Learn more about SipNoteFrequently asked questions
How much caffeine is in a HEYTEA Signature Milk Tea?
A 16 fl oz (473 ml) HEYTEA Signature Milk Tea contains approximately 100 mg of caffeine. Actual values may range from 80 to 120 mg depending on preparation and source variation.
Is HEYTEA Signature Milk Tea safe during pregnancy?
The current ACOG and NHS guideline is under 200 mg of caffeine per day during pregnancy. A HEYTEA Signature Milk Tea fits comfortably within that limit. Always consult your obstetrician for personalized advice.
When should I stop drinking HEYTEA Signature Milk Tea for sleep?
Caffeine has a 5-hour half-life. To have under 20 mg circulating at bedtime (the typical sleep-safe threshold), stop drinking HEYTEA Signature Milk Tea about 12 hours before sleep. 100 mg with the slower tea-based absorption curve. Tea's L-theanine partially modulates caffeine's stimulant effect.
HEYTEA Signature Milk Tea vs Naixue Cheese Tea — which has more caffeine?
HEYTEA Signature Milk Tea contains 100 mg per serving; Naixue Cheese Tea contains 100 mg per 16 fl oz (473 ml). Naixue Cheese Tea is the stronger of the two.
Does HEYTEA Signature Milk Tea keep you awake?
100 mg is moderate caffeine. Most people can drink HEYTEA Signature Milk Tea in the afternoon without notable sleep impact.
Caffeine values shown are typical for the listed serving size. Actual content varies by preparation, brewing method, batch, and brand reformulation. Not medical advice — consult a healthcare provider for personalized guidance.