Amoxicillin (Amoxil) is a prescription drug used for treating bacterial infections. It attacks the membrane around bacteria, which stops bacteria from growing. Find the best Amoxicillin coupon and save up to 80% off Amoxicillin, including generics. You can also find manufacturer coupon offers and receive a pharmacy savings card instantly for an immediate discount at pharmacies such as CVS, Walgreens, Walmart, and more. Amoxicillin and penicillin are two of many antibiotics on the market today. They’re actually in the same family of antibiotics, called the penicillin family. Picture 1 – Amoxicillin Rash Source – buzzle. Amoxicillin rash is a side effect reaction of the drug and can occur five days after use. Although amoxicillin rash may appear scary for most parents, there is no specific treatment for amoxicillin rashes. Amoxicillin is a penicillin antibiotic that fights bacteria. Amoxicillin is used to treat many different types of infection caused by bacteria, such as tonsillitis, bronchitis, pneumonia, gonorrhea, and infections of the ear, nose, throat, skin, or urinary tract. A reaction to amoxicillin, a medication used to treat bacterial infections, causes an amoxicillin rash. A side effect of amoxicillin can be a rash that may be mild or severe. Treatment options. I was prescribed doxycycline to prevent infection. I took it for 3 1/2 days and I felt like complete crap everyday and last night was the worst. I was so neasous and felt horrible. it gave me really really bad anxiety. Sometimes the rash is slightly raised and pink in color. The rashes appear after five to seven days of taking amoxicillin and commonly found on the chest, back, and abdomen. Amoxicillin is an antibiotic. It's used to treat bacterial infections, such as chest infections (including pneumonia), dental abscesses and urinary tract infections (UTIs). Advice for mothers using Amoxicillin while breastfeeding. Includes possible effects on breastfed infants and lactation.