** Thanks for contacting with your health concern 1. Amoxicillin is a penicillin-type antibiotic used to treat a variety of bacterial infection [ such as sinusitis, pneumonia, urinary tract infections, bronchitis, ear infection and infection of skin] and will not work for viral infections [common cold, flu] 2. I usually prescribe the dosage of this drug according to the severity of a sore throat, and since I haven t examined you personally, thus you can calculate or later discuss with your attending physician, regarding the same: i. for mild to moderate sore throat: 500 mg every 12 hours or 250 mg every 8 hours ii. for a severe sore throat: 875 mg every 12 hours, or 500 mg every 8 hours. till then: - maintain good oral hygiene, rinse your mouth after every meal, avoid smoking, tobacco chewing, spicy/fried foods, have warm salt water gargles. PS. Your attending physician must have taken due consideration in ordering the medicine and dosage for you, you can take it as prescribed and to allay your anxiety can ask him again the next morning.