Stupid question regarding medicine

Re: Stupid question regarding medicine

• Meg4583

  October 2011

  160mg/5ml bottle?

  So the dose of tylenol is 10-15mg/kg. your son is 19lbs, or 8.6kg. (1lb=2.2kg)

  Per my calculations he should be getting 2.8ml of the 160mg/5ml tylenol, or 90mg.  ( at 10mg/kg)

  at using 15mg/kg he'd get 4.0ml, so yea, its right in line with being correct. 

  Anywhere between 2.8-4ml would be in line with the proper dose. 

   

  I can't set up my nice ratio on here to show you how I figured it out, but 160mg/5ml = 90mg/xml then divide!

   

   
  

  

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• kevin.amanda

  October 2011

  Not a stupid question!

  Let's walk through it. Previous concentration was 80 mg/ml and you were giving 0.8 ml. So, the dose you were giving was 80 mg/ml x 0.8 ml = 64 mg.

  Your new concentration is 160 mg/5 ml (double check but I'm pretty sure this is the concentration of children's Tylenol, and the 80 mg/ml is the infant concentration). So, if you were to give 3.75 ml, you would be giving a dose of 160 mg/5 ml x 3.75 ml = 120 mg, which is almost twice as much as what you were giving before.

  Dosing of tylenol for pediatrics should not exceed 65 mg/kg/day, divided in 4-6 doses (roughly 10-16 mg/kg/dose). Your kid weighs 8.6 kg, so each dose should be between 86-138 mg, and maximum 560 mg/day.

  So, take home message is that you were probably underdosing with the previous concentration you had, and yes, 3.75 ml of the new concentration is fine and probably will work better than what you were doing before.
  

   

   
  

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• j_luvs_r member

  October 2011

  That does sounds exactly right.  If you want a quick guide to dosing, this is from Dr. Sears (https://www.askdrsears.com/topics/childhood-illnesses/medicine-cabinet/acetaminophen )

  ACETAMINOPHEN DOSING CHART

  Dose is every 4-6 hours. When treating fever or pain, I like to use a "strong but safe" dose so your child will feel better sooner. I have designed this chart with narrow weight ranges so you can give the best dose. Dosing chart for suppositories is below regular chart.

   

  Weight:	Milligram Dosage	Infant Drops 80mg/0.8ml	Children's liquid 160mg/5ml	Children's soft chews 80mg each	Junior strength Caps or chews 160mg each
  5-8 lbs	40mg	? dropper (.4ml)	? tsp (1.25ml)	N/A	N/A
  9-10 lbs	60mg	? dropper (.6ml)	1/3 tsp (1.8ml)	N/A	N/A
  11-16 lbs	80mg	1 dropper (.8ml)	? tsp (2.5ml)	N/A	N/A
  17-21 lbs	120mg	1 ? droppers (1.2ml)	? tsp (3.75ml)	N/A	N/A
  22-26 lbs	160mg	2 droppers (1.6ml)	1 tsp (5ml)	2 tablets	1 tablet
  27-32 lbs	200mg	2 ? dropper (2ml)	1 ? tsp (6.25ml)	2 ? tablets
  33-37 lbs	240mg	3 droppers (2.4ml)	1 ? tsp (7.5ml)	3 tablets	1 ? tablet
  38-42 lbs	280mg	3 ? droppers (2.8ml)	1 ? tsp (8.75ml)	3 ? tablets
  43-53 lbs	320mg	4 droppers (3.2ml)	2 tsp (10ml)	4 tablets	2 tablets
  54-64 lbs	400mg	Use Liquid	2 ? tsp(12.5ml)	5 tablets	2 ? tablets
  65-75 lbs	480mg		3 tsp (15ml)	6 tablets	3 tablets
  76-86 lbs	560mg		3 ? tsp (17.5ml)	7 tablets	3 ? tablets
  87-95 lbs	640mg		4 tsp (20ml)	8 tablets

   

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