Common side effects of Amoxil include stomach pain, diarrhea, vaginal itching and swollen tongue, while Bactrim users often experience vomiting, inappatence and rash, according to Drugs.com. Levaquin use can result in constipation, mild headache and mild dizziness.
Amoxil, or amoxicillin, is a bacteria-fighting penicillin antibiotic that is used to treat urinary tract infections, reports Drugs.com. Individuals who are allergic to other penicillin antibiotics should not use Amoxil. Signs of an allergic reaction include swelling of the face or throat, inability to breathe and hives. The drug can render birth control pills ineffective and can harm a nursing baby if passed through breast milk.
Bactrim is a drug used to treat urinary tract infections that is a combination of two antibiotics used to treat bacteria, sulfamethoxazole and trimethoprim, states Drugs.com. Individuals with severe kidney or liver disease, those with anemia due to folic acid deficiency, and pregnant women are cautioned against the use of Bactrim. Older adults using Bactrim are at highest risk for severe side effects, especially if the drug is combined with certain diuretics.
Levaquin, or levofloxacin, is used to treat bacteria-caused urinary tract infections in the bladder and kidneys, according to Drugs.com. Levaquin belongs to a group of antibiotics called fluoroquinolones. Individuals with muscle disorders may be precluded from using Levaquin. The drug can cause tearing in the Achilles' tendon of the heel, especially in those over age 60, individuals using steroids, and those who have undergone certain organ transplants.