Penicillin is an effective antibiotic that can prevent various bacterial infections, but the disadvantage is that overuse of penicillin may lead to a decreased effectiveness. This antibiotic works by stopping the growth of bacteria, according to WebMD.
Penicillin may not be safe for patients who have asthma, kidney disease, a blood clotting disorder, or another type of allergy. Penicillin does not treat viral infections such as flu or common cold. Diarrhea is a common side effect of penicillin. Another disadvantage of penicillin is that it may make oral birth control less effective, which may result in unplanned pregnancy.Learn More
Although penicillin does not necessarily go bad, it should not be taken past its expiry date as it will lose effectiveness with time, according to Mayo Clinic. When doctors prescribe penicillin, patients need to take the full course of the antibiotics to clear up the infection completely. If a dosage is missed, the patient should take it as soon as possible but should not double the dose.Full Answer >
While many doctors prescribe quinine tablets for leg cramps, little scientific evidence proves its effectiveness, according to the Harvard Medical School Family Health Guide. It is possible that quinine decreases nerve excitability and thus helps leg cramps.Full Answer >
Naproxen expires on the expiration date printed on the bottle, which is the final day that the manufacturer guarantees the medication's effectiveness and safety, notes Drugs.com. Outdated naproxen should be discarded properly, according to MedlinePlus.Full Answer >
Hydrogen peroxide retains its effectiveness for up to three years in an unopened container and six months in an opened container. Expired hydrogen peroxide is not detrimental, but it does lose potency.Full Answer >