During breastfeeding, it is best to avoid using cough syrup. To soothe a sore throat, you can try drinking plenty of water and avoiding irritating foods. Honey lozenges can also help with saliva production and throat relief. If you have nasal secretions causing your cough, using a product like Sinus Rinse™ twice a day for at least 5 days can be helpful. In a few days, your symptoms should improve.