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Cephalexin (Keflex, Keftab)
- Generic name: Cephalexin
- Brand names: Keflex, Keftab, Biocef
- Drug class: Cephalosporin antibiotic
Cephalexin is a semisynthetic, first generation cephalosporin antibiotic. It is indicated for the treatment of:
- Respiratory tract infection (pneumonia, bronchitis, strep throat,
or tonsillitis)
- Bone infection (osteomyelitis)
- Middle ear infection (otitis media)
- Sinusitis
- Urinary tract infection (UTI)
- Irritation of the prostate (prostatitis)
- Skin and soft tissue infections (cellulitis, folliculitis, or impetigo)
- Mastitis during breast-feeding
Cephalexin without a prescription
Here you can buy Cephalexin - the generic equivalent for Keflex. It is generally less costly prescription than other cephalosporins.
| Dosage |
Quantity |
Pharmacy |
Price |
Buy |
| 500 mg |
60 capsules |
4RX |
$30 |
|
| 500 mg |
120 capsules |
4RX |
$56 |
|
| 500 mg |
180 capsules |
4RX |
$81 |
|
| 500 mg |
240 capsules |
4RX |
$105 |
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Drug Information
Cephalexin Advantages
- Safe, well-tolerated, almost without dose-related
toxicity. It is relatively safe antibiotic in pregnancy.
- Very low risk for allergic reactions.
- Rather effective for streptococcal throat infection (strep throat) and
impetigo.
- Good treatment for superficial infections that result as complications of minor wounds or lacerations.
- Research have shown that ofloxacin and cephalexin are equally effective in the treatment of skin and soft-tissue infections.
- Food slows but does not decrease absorption.
- Because Cephalexin is absorbed high in the intestinal tract,
it does not disturb the lower bowel flora.
- Kills bacteria by inhibiting synthesis of bacterial cell wall.
Cephalexin Drawbacks
- Very short half-life (50-80 min) requires 4 times per day dosing.
- Less effective than cefatrizine and cefaclor against Escherichia
coli, Klebsiella pneumoniae and Proteus mirabilis.
- Not effective against many
gram-negative beta-lactamaseproducing bacteria.
- Not a choice for moderate or serious infections.
How to take
- Do not use cephalexin if you are allergic to other cephalosporin antibiotics (e.g. cefazcefuroxime).
- May be taken with or without meals.
- Check body temperature daily. If fever persists for more than
a few days or if high fever (greater than 102°F) or shaking chills
are noted, notify health care provider immediately.
- To clear up the infection completely you shoud take the
full prescription course of Cephalexin.
- Mild diarrhea is common with antibiotic use. However, a more
serious form of diarrhea (pseudomembranous colitis) may rarely
occur. This may develop while you use the antibiotic or within
several months after you stop it.
- Use Cephalexin with extreme caution in children younger than
10 years old who have diarrhea or an infection of the stomach
or bowel.
- Cephalexin may interfere with certain laboratory tests (including Coombs' test, certain urine glucose tests), causing false test results.
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Quick facts
- People who are allergic to Penicillins family,
have a small chance of having an allergic reaction to Cephalexin.
- Cephalosporin compounds were first isolated from cultures of
Cephalosporium acremonium from a sewer in Sardinia in 1948 by
Italian scientist Giuseppe Brotzu. The first agent cephalothin
(cefalotin) was launched by Eli Lilly in 1964.
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