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A 39-year-old female asked:

my 5 year old was given a prescription of 2 1/2 teaspoons of cephalexin 2 times a day for strep throat for 10 days. sound right i feel this is too much. is that correct dosage?

1 doctor answer3 doctors weighed in
Dr. Laura McMullen
Pediatrics 21 years experience
It : It depends on the strength of the oral suspension and the weight of your child. Cephalexin oral suspension comes in 2 strengths: 125mg/5ml or 250mg/5ml the recommended dosage for a child with strep throat is between 25-50mg/kg (2.2 lbs) twice a day for 10 days. If he is on the 125mg /5ml then he is getting about 312.5mg/dose. This is an appropriate dose for a child 12-24 lbs. If he is on the 250mg/5ml then he is getting 625mg/dose. This is an appropriate dose for a child 24lbs to 50 lbs. If you have any other questions about his medication, give his doctor a call. Good luck!

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Last updated Oct 3, 2016

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