Those allergic to penicillin should use caution when taking Keflex, as allergic reactions to the drug occur in up to 10 percent of individuals with penicillin allergies, cite the medical experts at RxList. Patients are advised to discuss any concerns about allergic reactions beforehand with their doctor.
The cephalosporin antibiotic is prescribed to treat a variety of bacterial infections. Signs of allergic reactions to Keflex include rash, itching and hives. Difficulty breathing and swelling of the lips, tongue or throat may also occur, according to RxList. Patients experiencing any of these symptoms are advised to stop taking Keflex and seek medical attention immediately.Learn More
The amount of time necessary for ringworm to go away after taking Lamisil depends on the severity and location of the infection, as stated by RxList. Patients must take Lamisil as prescribed by their doctor to completely eliminate ringworm. Most prescriptions are between six and 12 weeks long.Full Answer >
Tetracycline, a drug that treats bacterial infections, may take several weeks to several months to work, according to Acne.com. It is commonly prescribed along with topical medications to treat acne although it is used for other infections as well, reports MedlinePlus.Full Answer >
Penicillin normally takes a few hours to about 5 days to take effect; however, it doesn't relieve pain. Penicillin is a combination of antibiotics that only protects the body from bacterial infection or treats the body against current infection. Penicillin normally inhibits the new bacteria, but it does not work when bacteria replicates.Full Answer >
As with may antibiotics, there is not a definite time in which penicillin begins to take effect. The general rule is to continue the recommended dose until all signs of infection have been absent for 24 hours, according to Hesperian Health Guides medical experts.Full Answer >