Otex Sodium bicarbonate ear Drops are a gentle and effective solution to hardened ear wax. Clinically recommended to soften and help remove hardened ear wax. Otex Sodium bicarbonate ear Drops come with an easy-to-use dropper applicator. Otex Sodium bicarbonate ear Drops are clinically recommended for the treatment of excessive, hardened ear wax which can cause discomfort, a feeling of fullness and even pain, dizziness and some loss of hearing if left untreated.