It is normal for sodium bicarbonate ear drops to become more and more clogged as they are applied to the ear. Sodium bicarbonate ear drops are commonly known as cerumen water. When there is cerumen embolism in the external ear canal, you can use sodium bicarbonate ear drops. However, in some cases of cerumen embolism in the external ear canal, the cerumen is dry and hard. After the cerumen meets the drops, it will swell and block the outer ear canal patients are more uncomfortable, this is very normal. If you feel that the plug is very swollen, you can always go to the hospital and use a cerumen hook to gently remove the cerumen, or you can do a cerumen rinse, which is taking a syringe to rinse the outer ear canal to flush out the cerumen. Once the cerumen is flushed out of the external ear canal, the swollen feeling of ear blockage will disappear completely.