The nasal drops help relieve congestion in a few minutes and the effect of the medicine lasts for up to 10 hours.鼻滴有助纾缓交通挤塞和几分钟的药效持续长达10个小时。 Two or three drops should be used in each nostril two to three times a day, for up to seven days.两三滴应该在每个鼻...