Jasmine Tea: Understanding Caffeine Levels

Most jasmine tea cups contain about 28 mg of caffeine per 240 ml when the scenting is done on a green-tea base.

• Typical jasmine green tea (240 ml) ≈ 28 mg caffeine.
• Jasmine made from black tea can contain ≈ 47 mg per 240 ml; oolong and white bases are ≈ 37 mg and 16 mg.
• Herbal (true caffeine-free) alternatives contain 0 mg; decaffeinated tea carries a small residual amount (estimate).
• Population-average caffeine half-life ≈ 5.7 hours: plan intake accordingly (FDA limit for healthy adults ≈ 400 mg/day).

Does jasmine tea contain caffeine?

Yes — jasmine is a scenting process, not a plant. The final caffeine level equals the tea leaf used as the base. Commonly jasmine is scented over green tea, so a standard 240 ml cup will have the same caffeine as green tea in the dataset: 28 mg. If the base is black, oolong or white tea, expect the corresponding caffeine values from those bases.

Caffeine levels in different jasmine tea types

Use the base tea's numbers below to estimate jasmine tea caffeine per 240 ml cup. These are exact values from the provided dataset.

How jasmine tea compares to other drinks

Relative scale helps put jasmine's caffeine in context — a jasmine green cup is mild compared with coffee and most energy drinks.

Caffeine decay: how much remains after drinking

Use the population-average half-life of about 5.7 hours to estimate remaining caffeine. Below are concrete computations from two common jasmine doses (exact input values from the dataset): 28 mg (green-base) and 47 mg (black-base). Percent remaining: 0 h =100%, 3 h ≈69%, 6 h ≈48%, 9 h ≈33%, 12 h ≈23%.

Practical takeaway

If you drink a 240 ml cup of jasmine green tea late afternoon, roughly half the caffeine remains after ~6 hours — plan your last cup at least 6 hours before bedtime to lower sleep disruption, given the 5.7-hour average half-life.

What affects caffeine in jasmine tea?

Primary drivers are the base tea species and preparation:

• Base leaf (green, white, oolong, black) determines most of the caffeine — use the dataset values above.
• Leaf amount and brew time: longer steeping and more leaves raise extraction.
• Water temperature and leaf particle size: boiling water and broken leaves extract faster.
• Scenting does not add caffeine — jasmine aroma comes from flowers, not caffeine.

Health, safety and timing

For healthy adults the FDA and EFSA note about 400 mg/day as a commonly cited limit; pregnant people are advised to limit to about 200 mg/day. The American Academy of Pediatrics discourages routine caffeine for adolescents. If you have heart disease, anxiety, pregnancy concerns or are breastfeeding, consult a clinician before changing intake.

Caffeine-free and lower-caffeine options

True caffeine-free options are herbal teas (dataset: 0 mg per 240 ml). Decaffeinated tea exists for jasmine (leaves decaffeinated before scenting); residual caffeine varies by process — often very low but not always zero, so treat residual amounts as estimates. If you need precise tracking, log each cup in an app like CoffeeLog to sum daily totals and see timing relative to sleep.

Quick tips for choosing jasmine tea

• Prefer jasmine green tea for a low-caffeine aromatic cup (~28 mg/240 ml).
• Choose white-base jasmine for the lowest caffeine among common bases (~16 mg/240 ml).
• Opt for herbal floral blends or decaf-labeled jasmine if you need no or minimal caffeine.

Information here is for educational purposes only, not medical advice. For personal recommendations about pregnancy, medications or caffeine sensitivity, consult your healthcare provider. Sources used include USDA data compilations, FDA and EFSA guidance, and clinical advisory positions such as the American Academy of Pediatrics and Mayo Clinic.

How can I reduce the caffeine in a cup of jasmine tea?

Choose a lower-caffeine base (white or decaffeinated leaves), use fewer leaves, and shorten steeping to lower caffeine in a cup; those measures together will typically cut caffeine by a large fraction. Decaffeination is the removal of most caffeine from tea leaves.

Practically, pick jasmine scented on a white-tea base (dataset: 16 mg per 240 ml) rather than a black-tea base (47 mg per 240 ml) to start from a lower amount, per USDA FoodData Central values. For product-level residuals and exact labels consult USDA FoodData Central or a producer's lab sheet, and log choices in a tracker to compare options; see our guide to decaffeinated tea for more on decaf processes.

Lower water temperature and a single short steep extract less caffeine than boiling, rapid extractions; if you want aroma with minimal extraction, try multiple short infusions of the same leaves rather than one long steep. If you need step-by-step help, our brewing notes in Green Tea Caffeine and the decaf overview in Decaffeinated Tea explain how leaf quantity and temperature change extraction.

If I drink two cups of jasmine tea, how much caffeine is in my body after 3, 6 and 12 hours?

Two 240 ml cups of jasmine green tea deliver 56 mg total (2 × 28 mg); two 240 ml cups of jasmine black tea deliver 94 mg total (2 × 47 mg). Remaining caffeine is estimated with first-order elimination using a population-average half-life of 5.7 hours (342 minutes) per the EFSA 2015 opinion, so remaining mg = D × 0.5^(hours/5.7).

For 56 mg (two green-base cups): after 3 h = 56 × 0.5^(3/5.7) ≈ 56 × 0.69 ≈ ~39 mg; after 6 h = 56 × 0.5^(6/5.7) ≈ 56 × 0.48 ≈ ~27 mg; after 12 h = 56 × 0.5^(12/5.7) ≈ 56 × 0.23 ≈ ~13 mg. For 94 mg (two black-base cups): after 3 h ≈ 94 × 0.69 ≈ ~65 mg; after 6 h ≈ 94 × 0.48 ≈ ~45 mg; after 12 h ≈ 94 × 0.23 ≈ ~22 mg.

If you want to model other timings or doses, try our caffeine half-life calculator or estimate your latest safe time with Last Cup Before Bed.

Are there special caffeine limits for pregnancy or teenagers when drinking jasmine tea?

Pregnant people are commonly advised to limit caffeine to about 200 mg/day, and adolescents are discouraged from routine stimulant use by pediatric authorities; EFSA's 2015 opinion specifically recommends 200 mg/day during pregnancy. The EFSA pregnancy recommendation is an intake limit for pregnant people.

Translate those limits to jasmine cups using dataset values: one 240 ml jasmine green cup is 28 mg, so a pregnant person could theoretically have up to seven similar cups to approach 200 mg, but clinical guidance in the American College of Obstetricians and Gynecologists and NHS prefers conservative intake and accounting of all sources. For teenagers, the American Academy of Pediatrics discourages routine caffeine; see our tool for individualized limits by weight in Safe Daily Limit.

When pregnancy, adolescence, heart disease, or stimulant medications are involved, discuss intake with your clinician and track all sources (tea, soda, chocolate, pills) using a daily log or the site guides such as Caffeine and Pregnancy.

How much caffeine remains in decaffeinated jasmine tea compared to regular jasmine?

Decaffeinated jasmine tea typically contains only a small residual amount of caffeine, often far below a regular jasmine cup; residual caffeine is product-dependent and varies by decaffeination method. Residual caffeine is the small amount of caffeine left after a decaffeination process.

For context, a decaf brewed coffee in the dataset is 3 mg per 240 ml; regular jasmine green is 28 mg per 240 ml and jasmine black is 47 mg per 240 ml according to USDA FoodData Central values. Because manufacturers differ, check the producer's lab sheet or USDA entries for a branded item and consult our Decaf Coffee FAQ and the decaf tea guide at Decaffeinated Tea for tips on reading labels and comparing residual amounts.

If absolute zero caffeine is required, choose a herbal floral blend labeled caffeine-free (dataset: 0 mg per 240 ml) or certified caffeine-free products listed in our Caffeine-Free Herbal Tea Guide.

When should I stop drinking jasmine tea to avoid sleep disruption?

To reduce sleep disruption, stop drinking caffeine several hours before bedtime; a practical benchmark is to allow at least 6 hours because a large study showed a 400 mg dose taken 6 hours before bed cut sleep time by more than an hour (Drake et al., 2013). Sleep disruption is measurable reductions in total sleep time and sleep efficiency.

Apply that to jasmine: for a 240 ml jasmine green cup (28 mg) the decay model (half-life 5.7 h per EFSA 2015) gives 28 × 0.5^(6/5.7) ≈ 28 × 0.48 ≈ ~13 mg left after 6 hours and 28 × 0.5^(9/5.7) ≈ 28 × 0.33 ≈ ~9 mg after 9 hours; for low-sensitivity sleepers you may be comfortable with a 6-hour gap, for sensitive sleepers aim for ~8–9 hours. Use the Last Cup Before Bed tool to estimate your personal cutoff and the caffeine calculator to see mg left at any hour.

Bottom line

Jasmine tea contains caffeine because jasmine is a scenting process, not a caffeine source: the caffeine equals the base tea. A standard 240 ml cup of jasmine green tea is 28 mg, jasmine white is 16 mg, jasmine oolong is 37 mg, and jasmine on a black-tea base is 47 mg (dataset values from USDA FoodData Central).

Caffeine leaves the body by first-order elimination; this guide uses a population-average half-life of 5.7 hours and the formula remaining = D × 0.5^(hours/5.7) (EFSA 2015). For example, one 240 ml jasmine green cup (28 mg) falls to ~13 mg after 6 hours and ~9 mg after 9 hours; two green cups (56 mg) fall to ~27 mg after 6 hours and ~13 mg after 12 hours using the same model. For sleep planning, a large sleep study found that a 400 mg dose 6 hours before bedtime still reduced sleep duration, so the conservative benchmark of a multi-hour gap (6+ hours) before bed is reasonable for most people (FDA and EFSA summaries).

Keep daily safety limits in mind: the FDA commonly cites about 400 mg/day as a reasonable maximum for healthy adults and EFSA and obstetric bodies recommend about 200 mg/day for pregnant people. Use our calculators and guides — Safe Daily Limit, caffeine calculator, and Last Cup Before Bed — to add up cups and other sources so you stay within the recommended limits.