Most healthy adults can keep matcha to 2–4 grams daily (about 1–2 teaspoons) to stay well within typical caffeine limits.

One standard serving of matcha is 1–2 grams of powder, whisked with hot water for a single cup.

For matcha green tea intake, 1–2 teaspoons a day (about 1–2 cups) suits most healthy adults within common caffeine limits.

Typical study doses use 2 g daily for prevention; dosing for active symptoms varies and needs clinician guidance.

There’s no established dosing for mannitol in Parkinson’s; any use should be supervised by your neurologist.

Most adults start with 500–1000 mg mastic gum per day, split into two doses, then adjust to fit the goal.

Small trials used 1–3 g per day for 14 days; medical guidelines still recommend antibiotic regimens for Helicobacter pylori.

There’s no set medical dose; many adults keep manuka honey to 1–2 tablespoons daily while staying under free-sugar limits for H. pylori diets.

For ulcerative colitis, no proven dose exists; many trial 1–2 teaspoons of mānuka honey daily with meals after advice from an IBD clinician.

Start with 1–2 teaspoons of manuka honey up to three times daily for a sore throat; never give honey to babies under 1 year.