Keftab is a brand-name medication that contains cephalexin as its active ingredient. Cephalexin belongs to the first-generation cephalosporin class of antibiotics. Keftab is supplied as a pill and is available in the following strengths: 125 mg, 250 mg, 375 mg, 500 mg, and 750 mg. In Hong Kong the product is prescription-only and is regulated by the Department of Health. The manufacturer is not disclosed in publicly available sources; therefore this article focuses on the well-established properties of cephalexin itself.
Cephalexin interferes with bacterial cell-wall synthesis. It binds to penicillin-binding proteins (PBPs) on the bacterial membrane, blocking the final cross-linking step that creates a strong peptidoglycan layer. Without this protective wall, bacteria become osmotically fragile and lyse, leading to bacterial death. The drug is bactericidal, produces rapid onset of action (usually within a few hours), and its effect persists for the duration of the dosing interval. Oral absorption is high (≈90 % bioavailability), and the medication is primarily eliminated unchanged by the kidneys.
Cephalexin is approved for a range of bacterial infections that are susceptible to first-generation cephalosporins. In Hong Kong, as in many other jurisdictions, the typical indications include:
These uses are based on the drug’s spectrum against Gram-positive cocci (Streptococcus spp., Staphylococcus aureus) and some Gram-negative organisms (Escherichia coli, Proteus mirabilis).
These reactions are usually self-limiting and can be managed with adequate hydration and, if needed, an antidiarrheal agent after consulting a healthcare professional.
If any of your current medications are not listed above, discuss them with a pharmacist or physician before starting Keftab.
Note: The exact dose and duration must be individualized by a healthcare provider based on the infection type, patient weight, renal function, and clinical response.
This article provides educational information about Keftab and is not a substitute for professional medical advice. Treatment decisions, including use for unapproved indications, must be made under the guidance of a qualified healthcare provider. The content is intended for informational purposes and does not constitute medical recommendations. Always consult a physician before starting, stopping, or changing any medication regimen.
Yes, Keftab tablets can be taken while traveling, but you should carry the prescription label and keep the medication in its original packaging to satisfy customs or security checks.
The specific imprint varies by manufacturer; typically, the tablet bears the brand name “KEFTAB” and a numeric code indicating strength (e.g., “250” for 250 mg). Verify the imprint against the pharmacy label.
Cephalexin is not a controlled substance and does not trigger standard workplace drug screens. However, some specialized tests might detect antibiotics if specifically requested.
Cephalexin may reduce the effectiveness of oral contraceptives slightly. Use an additional non-hormonal barrier method (e.g., condoms) while taking Keftab and for a few days after finishing the course.
Both are β-lactam antibiotics, but cephalexin (Keftab) is often preferred for skin infections caused by Staphylococcus aureus that are resistant to penicillins, whereas amoxicillin targets a broader range of streptococci.
Moderate alcohol consumption does not interfere with the antibacterial action of Keftab, but excessive drinking may increase stomach upset and reduce adherence to the dosing schedule.
Crushing may alter the drug’s release profile and increase the risk of gastrointestinal irritation. If a tablet is broken, contact your pharmacist for guidance; do not self-adjust the dose.
Keep the tablets in a tightly sealed container away from moisture. Using a desiccant packet (if provided) and storing the medication in a cool, dry place helps maintain potency.
Different infection types and patient characteristics (weight, kidney function) require tailored dosing. Having several strengths allows clinicians to prescribe the most appropriate dose without excess tablet splitting.
