Lipton
How much caffeine is in Lipton Iced Tea Lemon?
Data checked against the source on 2026-10-03 by Oleksii Y.
One 16.9 fl oz bottle of Lipton Iced Tea Lemon has 21 mg of caffeine, according to PepsiCo Product Facts.
How Lipton Iced Tea Lemon compares
- Strength: 4.2 mg per 100 ml.
- One 16.9 fl oz bottle has as much caffeine as about a quarter to a third of a cup of brewed coffee, which has 94.8 mg per 8 fl oz cup.
- Of the 18 other teas in our tea chart, 12 have more caffeine per serving and 6 have less.
How much will be left at bedtime?
1 × 16.9 fl oz bottle of Lipton Iced Tea Lemon
Left at 11:00 PM (8 h later), average metabolism
≈ 7 mg
Range 3–11 mg (fast to slow metabolism)
21 mg is already at or under the 50 mg this tool aims to have left at bedtime.
What sleep studies found near this dose
- Gardiner et al. 2025 (randomized trial): In 23 healthy young men, 100 mg taken 12, 8 or 4 hours before bed had no significant effect on measured or self-rated sleep.
- Gardiner et al. 2023 (meta-analysis): To avoid losing sleep time, the authors suggest a coffee (107 mg per 250 ml) at least 8.8 hours before bed.
Estimate from a simple model: half-life of 3, 5 or 8 hours, 50 mg bedtime target. How we calculate
How long does Lipton Iced Tea Lemon stay in your system?
Our model halves caffeine every 5 hours for average metabolism, and every 3 or 8 hours for fast or slow metabolism. From one 16.9 fl oz bottle of Lipton Iced Tea Lemon (21 mg), about 11 mg is still in your body 5 hours later and about 5 mg after 10 hours. If you clear caffeine slowly (an 8-hour half-life), about 9 mg is left after 10 hours.
Estimated caffeine left at 11:00 PM from one 16.9 fl oz bottle (21 mg), using a half-life of 5 hours for average metabolism and 3 to 8 hours for the range. How we calculate
| Had at | Left at bedtime (average) | Range |
|---|---|---|
| 8:00 AM (15 h before bed) | ≈ 3 mg | 1–6 mg |
| 12:00 PM (11 h before bed) | ≈ 5 mg | 2–8 mg |
| 3:00 PM (8 h before bed) | ≈ 7 mg | 3–11 mg |
| 6:00 PM (5 h before bed) | ≈ 11 mg | 7–14 mg |
How many fit in a day?
Reference amounts are for caffeine from all sources combined. Counted at the upper end of the stated amount, one serving at a time:
- Up to 400 mg a day for most healthy adults (FDA, EFSA): about 19 servings.
- Up to 200 mg at one time for healthy adults (EFSA): about 9 servings in one go.
- Up to 200 mg a day in pregnancy (EFSA, NHS): about 9 servings.
These are reference amounts for groups of people, not a personal limit. Some people feel jittery or sleep worse on much less. See the cutoff calculator for timing.
Good to know
A bottle of Lipton Iced Tea Lemon lists less than half the caffeine of an 18.5 fl oz Pure Leaf Sweet Tea (54 mg).
Lipton Iced Tea Lemon vs other iced and bottled tea drinks
- Iced tea (brewed, unsweetened): Lipton Iced Tea Lemon has less caffeine than iced tea (brewed, unsweetened) per typical serving. Lipton Iced Tea Lemon: 21 mg per 16.9 fl oz bottle; Iced tea (brewed, unsweetened): 72 mg per Small drink (360 g).
- Bottled black iced tea: Lipton Iced Tea Lemon has less caffeine than bottled black iced tea per 100 ml (4.2 vs 11 mg). Lipton Iced Tea Lemon: 21 mg per 16.9 fl oz bottle; Bottled black iced tea: 52 mg per 16 fl oz bottle (473 g).
- Pure Leaf Sweet Tea: Lipton Iced Tea Lemon has less caffeine than Pure Leaf Sweet Tea per 100 ml (4.2 vs 9.9 mg). Lipton Iced Tea Lemon: 21 mg per 16.9 fl oz bottle; Pure Leaf Sweet Tea: 54 mg per 18.5 fl oz bottle.
Common questions
How much caffeine is in Lipton Iced Tea Lemon?
PepsiCo Product Facts gives 21 mg of caffeine per 16.9 fl oz bottle.
How many Lipton Iced Tea Lemon servings can I have in a day?
The FDA and EFSA cite up to 400 mg of caffeine a day, from all sources combined, for most healthy adults. At 21 mg per 16.9 fl oz bottle, that is about 19 servings if Lipton Iced Tea Lemon is your only source. In pregnancy the reference is 200 mg a day.
How late can I drink Lipton Iced Tea Lemon?
One serving has about 21 mg, which is at or under the 50 mg our calculator aims to have left at bedtime, so it sets no cutoff for a single serving. Several servings add up.
Does Lipton Iced Tea Lemon have more caffeine than Iced tea (brewed, unsweetened)?
Lipton Iced Tea Lemon has less caffeine than iced tea (brewed, unsweetened) per typical serving. Lipton Iced Tea Lemon: 21 mg per 16.9 fl oz bottle; Iced tea (brewed, unsweetened): 72 mg per Small drink (360 g).
How long does Lipton Iced Tea Lemon stay in your system?
Of the 21 mg in one 16.9 fl oz bottle, roughly 11 mg remains after 5 hours and 5 mg after 10 hours with our average 5-hour half-life. From fast to slow metabolism, 10 hours later it is between 2 and 9 mg.
Where the number comes from
- Lipton Iced Tea Lemon - 16.9 fl oz. PepsiCo Product Facts. GTIN 00012000018633, nutrition facts: "Caffeine 21mg" Accessed 2026-10-02. Source ↗
- Pure Leaf Iced Tea - Sweet Tea - 18.5 fl oz. PepsiCo Product Facts. GTIN 00012000286193, nutrition facts: "Caffeine 54mg" Accessed 2026-10-02. Source ↗
Recipes and labels change. If a number here no longer matches the label, the label wins.
General information, not medical advice
If you feel unwell after caffeine — for example chest pain, a fast or irregular heartbeat that does not settle, fainting, confusion or trouble breathing — get urgent medical help. If you are pregnant or breastfeeding, under 18, take medication, or have a heart, liver or anxiety condition, high blood pressure or a sleep disorder, ask a doctor or pharmacist what amount is right for you.
Sources
- U.S. Food and Drug Administration (2024). Spilling the Beans: How Much Caffeine is Too Much? FDA Consumer Updates. fda.gov ↗
- European Food Safety Authority. Caffeine | EFSA. EFSA topic page (summary of the 2015 Scientific Opinion on the safety of caffeine). efsa.europa.eu ↗
- NHS. Foods to avoid in pregnancy. NHS. nhs.uk ↗
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