A 10:1 ratio usually describes the amount of starting plant material used to obtain an amount of extract. If the label defines it as 10 parts herb to 1 part native extract, then 100 mg of that extract corresponds to 1,000 mg of starting material on that stated basis. The arithmetic depends on what the label means by “extract”. EMA guidance on extract ratios
Check the basis before multiplying
Look for the plant part, the amount of native extract per serving, the ratio and any explanation of carriers. If the label says only “100 mg extract blend”, find out how much is native extract before applying a native-extract ratio. If the ratio is given as a range, a single precise equivalent can hide the stated variability.
Here is a shopping example. Pack A says one serving contains 100 mg native leaf extract at 10:1. Pack B gives 1,000 mg of leaf powder. You can compare the declared starting-material figure with the amount of powder. Extract and powder can have different chemical profiles, and the two labels give you no direct comparison of effects.
When price is the real question
Use actual servings to compare pack prices. Keep a separate line for preparation and declared amount. “₹12 per serving” can be correct even when there is too little information to say which serving is comparable. The cost-per-serving worksheet handles that arithmetic.
Use the powder versus extract guide for the wider comparison. The EMA source explains terminology for herbal medicinal products in Europe. An Indian pack’s category and wording need their own check.