Breakdown of Эти капли помогают, но их нельзя использовать слишком часто.
Questions & Answers about Эти капли помогают, но их нельзя использовать слишком часто.
Because капли is plural, and the demonstrative adjective has to agree with it.
- этот = this (masculine singular)
- эта = this (feminine singular)
- это = this (neuter singular)
- эти = these (plural)
So эти капли means these drops.
The singular of капли is капля, which is feminine:
- эта капля = this drop
But in your sentence the noun is plural, so we use эти.
Капли literally means drops.
In everyday Russian, капли often refers to medicinal drops, for example:
- eye drops
- nose drops
- ear drops
So in this sentence, it most likely means something like these drops in a medical sense, not just random drops of liquid.