BRAND NAMES CEPOREX,KEFLEX
Used in the following combined preparations None
GENERAL INFORMATION
Cephalexin is a cephalosporin antibiotic that is prescribed for a variety of mild to moderate infections. Cephalexin does not have such a wide range of uses as some other antibiotics, but it is helpful in treating bronchitis, cystitis,
and certain skin and soft tissue infections. In some cases it is prescribed as follow-up treatment for severe infections after a more powerful cephalosporin has been given by injection.
Diarrhoea is the most common side effect of cephalexin, although it tends to be less severe than with other cephalosporin antibiotics. In addition, some people may find that they are allergic to this drug, especially if they are sensitive to penicillin.
INFORMATION FOR USERS
Your drug prescription is tailored for you. Do not alter dosage without checking with your doctor.
How taken
Tablets, capsules, liquid.
Frequency and timing of doses
2-4 x daily.
Dosage range
Adults 1-4g daily.
Children Reduced dose according to age and weight.
Onset of effect
Within 1 hour.
Duration of action
6-12 hours.
Diet advice
None.
Storage
Keep tablets and capsules in a closed container in a cool, dry place out of the reach of children. Refrigerate liquid, but do not freeze, and keep for no longer than 10 days. Protect from light.
Missed dose
Take as soon as you remember. If your next dose is due at this time, take both doses now.
Stopping the drug
Take the full course. Even if you feel better, the original infection may still be present and may recur if treatment is stopped too soon.
Exceeding the dose
An occasional unintentional extra dose is unlikely to be a cause for concern.
But if you notice any unusual symptoms, or if a large overdose has been taken, notify your doctor.
POSSIBLE ADVERSE EFFECTS
Most people do not suffer serious adverse effects while taking cephalexin.
Diarrhoea is common but it tends not to be severe. The rarer adverse effects are usually due to an allergic reaction and may necessitate stopping the drug.
INTERACTIONS
Probenecid This drug increases the level of cephalexin in the blood. The dosage of cephalexin may need to be adjusted accordingly.
Oral contraceptives Cephalexin may reduce the contraceptive effect of these drugs. Discuss with your doctor.
QUICK REFERENCE
Drug group Cephalosporin antibiotic
Overdose danger rating Low
Dependence rating Low
Prescription needed Yes
Available as generic Yes
SPECIAL PRECAUTIONS
Be sure to tell your doctor if:
You have a long-term kidney problem.
You have had a previous allergic reaction to penicillin or cephalosporin antibiotics.
You have a history of blood disorders.
You are taking other medications.
Pregnancy
No evidence of risk to the developing baby.
Breast-feeding
The drug passes into the breast milk but at normal doses adverse effects on the baby are unlikely. Discuss with your doctor.
Infants and children
Reduced dose necessary.
Over 60
No special problems.
Driving and hazardous work
No known problems.
Alcohol
No known problems.
PROLONGED USE
Cephalexin is usually given only for short courses of treatment.
