Strepsils sore throat and blocked nose if your sore throat also comes with nasal congestion check out one of the additions to the range ndash strepsils sore throat amp blocked nose lozenges as well as offering two antiseptic ingredients to help fight bacterial throat infections sore throat amp blocked nose lozenges have a menthol vapour action which helps unblock the nose suitable for adults and children aged 6 how to take dissolve one lozenge slowly in the mout