Good morning Mrs., I cannot suggest a suppository for your symptoms as the ingredients have not been studied enough to ensure the safety of the breastfeeding child. Additionally, the effectiveness of these products has not been established. To help with your sore throat, I may suggest an analgesic such as acetaminophen or an anti-inflammatory such as ibuprophen, if you do not have any contraindications or interactions with other medications or natural products. Additionally, hydration with cold or hot liquids may help with throat pain. Please do not hesitate to ask if you have any other questions.