19th century, European scientists found that the active ingredient is water willow bark <br>salicylic acid and successfully extracted out. But this acid stomach stab <br>excited too.
In the 19th century, European scientists discovered that the active ingredient in willow bark was water.<br>The acid was successfully extracted. But this salicylic acid stings on the stomach.<br>It's too big.
In the 19th century, European scientists found that the effective ingredient of willow bark was water<br>The salicylic acid was extracted successfully. But this salicylic acid has a stomach sting<br>Too much excitement.