Corvalol N Drops. Components: Ethyl ether of bromisovaleric acid, methyl valerate, peppermint oil, hops oil, sodium acetate trihydrate, diluted acetic acid, ethyl alcohol 96%, purified water. Corvalol N Drops are to be taken internally. The drops have sedative, spasmolytic and vasodilating effect, and if taken in large amounts the drops improve sleep. Corvalol is helpful for such conditions as neurosis, nervous irritability, tachycardia, insomnia, early stages of essential hypertension, for intestinal spasms. Take orally 15-30 drops with a small amount of water or on a lump of sugar.