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Most tea bags taste best within 1–2 years; unopened, well-sealed packs can keep longer, while herbal and flavored blends fade sooner.

Senna tea usually triggers a bowel movement in 6 to 12 hours, so many people drink it after dinner or before bed.

Most adults feel 200 mg of caffeine fade in 6 to 10 hours, yet small amounts can stay in the body closer to a full day.

After one caffeinated drink, caffeine in breast milk peaks near 1 hour, then drops by half every 4–7 hours, so it’s often low by 24–36 hours.

Steep tea 1 to 5 minutes: green 1 to 3, black 3 to 5, herbal 5 to 7; start short, taste, then add time until your cup tastes right.

Cold-brew coffee keeps 7-10 days in the fridge when sealed and kept cold; for the cleanest taste, finish it within 7 days.

Coffee mate creamer usually keeps 1–3 weeks in the fridge once opened, but the date, type, and handling can shorten it.

Vacuum-sealed coffee can stay tasty for weeks to months, based on roast date, grind size, and where you store the bag.

Coffee in a dispense chamber tastes best for about 1–3 weeks; air, heat, and oily residue speed staling.

Sealed mylar slows staling; most roasted beans taste best for weeks, then fade, while good sealing can keep them drinkable for months.