at this time

I take my medicine at this time.

私はこの時に薬を飲みます

I take my medicine at this time every night.

私は毎晩この時に薬を飲みます

I take my medicine at this time at home every night.

私は毎晩家でこの時に薬を飲みます

I take my medicine at this time at home every night after I finish eating.

私は毎晩家で食事を終えてこの時に薬を飲みます

I take my medicine at this time at home every night after I finish eating, when the alarm sounds.

私は毎晩家で食事を終えて合図の音が鳴るとこの時に薬を飲みます