Cephalexin hydrochloride monohydrate

Questions | Reviews ***

What happens when I mix cephalexin hydrochloride monohydrate with alcohol?

I had just finished my coarse of tablets 500mg three times a day. Then I went out 1 hour later for a couple of drinks and six hours later got done for drunk driving. Was the drug anything to do with this?
by Craig Collins in australia, 11/27/2005


Can you leave Cephalexin out for at least eight hours and it still be okay? Thanyou so very much!
by Jaime Self in United States, 03/10/2007

Cephalexin hydrochloride monohydrate
Cephalexin hydrochloride monohydrate (Keftab)
(sef-ah- LEX-in)
Pregnancy Category: B Keftab (Rx)
Cephalexin monohydrate
Cephalexin monohydrate (Keflex)
(sef-ah- LEX-in)
Pregnancy Category: B Apo-Cephalex Biocef Dom-Cephalexin Keflex Novo-Lexin Nu-Cephalex Penta-Cephalexin PMS-Cephalexin STCC-Cephalexin (Rx)

Classification: Cephalosporin, first-generation

See Also: See also Anti-Infectives and Cephalosporins .

Action/Kinetics: Peak serum levels: PO, 9-39 mcg/mL after 1 hr. t 1/2, PO: 50-80 min. Absorption delayed in children. The HCl monohydrate does not require conversion in the stomach before absorption. Ninety percent of drug excreted unchanged in urine within 8 hr.

Uses: (1) Respiratory tract infections caused by Streptococcus pneumoniae and group A -hemolytic streptococci. (2) Otitis media due to S. pneumoniae, Hemophilus influenzae, Moraxella catarrhalis (use monohydrate only), staphylococci, streptococci, and N. catarrhalis. (3) GU infections (including acute prostatitis) due to Escherichia coli, Proteus mirabilis or Klebsiella species . (4) Bone infections caused by P. mirabilis or staphylococci. (5) Skin and skin structure infections due to staphylococci and streptococci.

Special Concerns: Safety and effectiveness of the HCl monohydrate have not been determined in children.

Additional Side Effects: Nephrotoxicity, cholestatic jaundice.

How Supplied: Cephalexin hydrochloride monohydrate: Tablet: 500 mg. Cephalexin monohydrate: Capsule: 250 mg, 500 mg; Powder for Reconstitution: 125 mg/5 mL, 250 mg/5 mL; Tablet: 250 mg, 500 mg

?Capsules, Oral Suspension, Tablets General infections.
Adults, usual: 250 mg q 6 hr up to 4 g/day. Pediatric: M onohydrate 25-50 mg/kg/day in four equally divided doses.
Infections of skin and skin structures, streptococcal pharyngitis, uncomplicated cystitis, over 15 years.
Adults: 500 mg q 12 hr. Large doses may be needed for severe infections or for less susceptible organisms. For streptococcal pharyngitis in children over 1 year and for skin and skin structure infections, the total daily dose should be divided and given q 12 hr. In severe infections, the dose should be doubled.
Otitis media.
Pediatric: 75-100 mg/kg/day in four divided doses.

Cephalexin hydrochloride monohydrate Ratings

Overall Rating:



(based on 3 reviews)



Ease of Use:


Overall Satisfaction:




Cephalexin hydrochloride monohydrate

Effectiveness: **

Ease of Use: **

Overall Satisfaction: *


kevin carbone, canada - 06/22/2009

I recently underwent surgery for hypertrophy of Nasal Turbinates. After surgery, I was given this medication. Now I feel extremely tired and constipated. Could this medication be causing my symptoms?