The two lavender drinks are not close on caffeine. A grande Iced Lavender Oatmilk Latte carries about 150mg, while a grande Iced Lavender Cream Oatmilk Matcha lands near 55mg. Same flavor, roughly a threefold gap, because one runs on Blonde espresso and the other runs on a couple scoops of matcha under lavender cold foam.
Why the latte hits so much harder than the matcha
The lavender is just a syrup and a cold foam. It carries no caffeine of its own, so the number you feel comes entirely from the base you build the drink on. The Iced Lavender Oatmilk Latte is built on Starbucks Blonde Espresso Roast, which is the higher-caffeine roast on the bar. A grande gets two shots, so it scales the way any grande blonde latte does. If you want the full breakdown of that roast, we cover it in the Blonde espresso caffeine guide.
The Iced Lavender Cream Oatmilk Matcha has no espresso at all. Its caffeine comes from the matcha tea blend, which is ground green tea plus sugar. Matcha carries real caffeine, but far less per drink than two espresso shots, so a grande sits around 55mg. That is closer to a strong cup of green tea than to a latte. If you are ordering the matcha version for a jolt, temper your expectations. It is the mellow one.
Both drinks scale the obvious way with size. Every size step on the latte adds another blonde shot worth of caffeine, so tall to venti roughly triples it. The matcha climbs more gently because you are only adding scoops of tea blend, not espresso.
Lavender drinks caffeine by size
Caffeine, calories, and sugar by size, pulled from the Starbucks nutrition listings for the iced versions. Calories and sugar are approximate and shift with your milk and sweetener choices. Caffeine is the figure to watch.
| Drink and size | Caffeine | Calories | Sugar |
|---|---|---|---|
| Iced Lavender Oatmilk Latte, Tall (12 oz) | 75mg | 150 | 15.5g |
| Iced Lavender Oatmilk Latte, Grande (16 oz) | 150mg | 220 | 22.9g |
| Iced Lavender Oatmilk Latte, Venti (24 oz) | 225mg | 287 | 31.2g |
| Iced Lavender Cream Oatmilk Matcha, Tall (12 oz) | 30mg | 280 | 25.5g |
| Iced Lavender Cream Oatmilk Matcha, Grande (16 oz) | 55mg | 390 | 35.9g |
| Iced Lavender Cream Oatmilk Matcha, Venti (24 oz) | 75mg | 477 | 45.2g |
Two things jump out of that table. First, a venti Iced Lavender Oatmilk Latte at 225mg is more than four times the caffeine of a grande matcha version, so size and base together swing the number a lot. Second, the matcha is the heavier drink on calories and sugar despite the lower caffeine, because of the lavender cream foam and the sweetened tea blend. Low caffeine does not mean light.
For context, the FDA cites 400mg of caffeine a day as an amount generally not associated with negative effects in healthy adults. How caffeine affects you depends on your own tolerance and health, so treat these numbers as information, not advice.
Comparing caffeine? The caffeine comparison tool puts hundreds of drinks side by side, and the caffeine curfew calculator can check your cutoff time for tonight.
How to shift the caffeine at the register
If you like the lavender flavor but want a different caffeine load, you have levers. Ask for the latte made with the Signature espresso instead of Blonde and you drop roughly 10mg per shot. Add a shot to either drink and you add another blonde or signature shot of caffeine on top of the base. Order the matcha version if you want the taste with a soft ceiling around 55mg to 75mg. And a decaf note: Starbucks does not decaf the matcha, so the matcha's floor is whatever the tea blend gives you, not zero.
One thing worth flagging for anyone stacking drinks. A venti Iced Lavender Oatmilk Latte plus a second coffee later puts you near the FDA reference point on its own, since that venti is already 225mg. The matcha is the safer repeat order if you drink more than one a day.
Related reading
For the roast that powers the latte, see the Starbucks Blonde espresso caffeine breakdown. For another seasonal latte people ask about by the number, see the Pumpkin Spice Latte caffeine guide. Everything by the milligram lives in the caffeine database.
FAQ
Which lavender drink has more caffeine? The Iced Lavender Oatmilk Latte, by a wide margin. A grande latte is about 150mg versus 55mg for the grande Lavender Cream Oatmilk Matcha, because the latte runs on two shots of Blonde espresso and the matcha runs on tea.
Does the lavender syrup or foam add any caffeine? No. The lavender is flavor only. Every milligram in these drinks comes from the espresso in the latte or the matcha blend in the matcha, not from the lavender.
Is the Lavender Cream Oatmilk Matcha a low-caffeine option? Relatively, yes. A grande is around 55mg, closer to a strong green tea than a latte, but it is not caffeine-free and it is high in sugar and calories, so it is not a light drink overall.