A trustworthy metabolism tea will list its active ingredients individually, with each one named in plain language rather than a Latin binomial alone. The three ingredients that appear most consistently in well-regarded blends are green tea leaf extract (associated with antioxidant activity and mild thermogenic effects), ginger root (used traditionally to support digestion), and lemon balm or peppermint leaf (primarily for palatability and mild digestive comfort).
The phrase to watch for is proprietary blend followed by a single combined weight. It legally permits manufacturers to include one active ingredient at near-zero amounts alongside a cheaper filler, and list both under one number. Any blend using this format fails point one immediately.