この薬は大変よく効く。

この薬は大変よく効く。

This medicine will do you a good deal of good.

この薬(くすり)は大変(たいへん)よく効(き)く。

Kono kusuri wa taihen yoku kiku.

此の (この)

this (something or someone close to the speaker (including the speaker), or ideas expressed by the speaker)

薬 (くすり)

medicine; pharmaceuticals; (legal) drugs; efficacious chemical (i.e. gunpowder, pesticide, etc.); (pottery) glaze; small bribe

は (は)

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

大変 (たいへん)

very; greatly; immense; enormous; great; serious; grave; dreadful; terrible; difficult; hard; major incident; disaster

良く (よく)

nicely; properly; well; skillfully; skilfully; frequently; often

効く (きく)

to be effective; to show effect; to do its work; to carry out its function well; to be possible to use

Readings: ヤク、くすり

Meanings: medicine, chemical, enamel, gunpowder, benefit

Readings: ダイ、タイ、おお-、おお.きい、 -おお.いに

Meanings: large, big

Readings: ヘン、か.わる、か.わり、か.える

Meanings: unusual, change, strange

Readings: コウ、き.く、ききめ、なら.う

Meanings: merit, efficacy, efficiency, benefit