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Too much caffeine often feels loud for 1–6 hours, then can linger 6–12 hours, with a longer tail after big doses or late timing.

Most caffeine crashes last 2–6 hours, with stronger doses and little sleep pushing the slump longer.

Caffeine often feels milder within 4–6 hours, yet sleep effects can linger 10–12 hours, depending on dose, timing, and your metabolism.

Caffeine withdrawal headaches often start 12–24 hours after your last dose, peak in 1–2 days, and fade within 2–9 days for many people.

Caffeine withdrawal symptoms can last 2–9 days, with the peak near days 1–2 after your last caffeine.

Caffeine’s half-life is near 5 hours, so it can linger 10–12 hours, with bigger swings in pregnancy, liver disease, and some medicines.

For 12 cups, most drip brewers taste best with 10–12 level scoops (2 tbsp each); tweak by 1 scoop for your taste.

Starbucks keeps the Gingerbread Chai Latte for the holiday menu window, then it leaves when the menu turns or stores sell out.

In the U.S., Starbucks started the Chocolate Covered Strawberry Frappuccino on Feb 4, 2025 and sold it only while supplies last.

Starbucks Cherry Chai is a spring limited-time drink, sold until stores run out—often from early March into mid-May.