My friend Molly the ER doc gave such great advice in her comment to my post last week that I thought I'd share again and link to the charts she recommended. I wanted to embed the pictures but I don't think I can.
Here's the acetaminophen chart.
Here's the ibuprofen chart.
And here's what Dr. Molly says:
In general, you can give children 15 mg/kg of acetaminophen every 4-6 hours (that's KG, not pounds, mind you.).
And...even cooler...the dosage of ibuprophen is 10 mg/kg. And the concentration in the bottles (100 mg/tsp) is such that it usually works out that whatever the dosage of acetaminophen is, it's the same dose of ibuprophen! (i.e. 1 tsp of acetaminophen means they'll likely get 1 tsp of ibuprophen...GENIUS!!)
***You can only give ibuprophen to babies over 6 months of age.
And if you're going to give both, put a piece of paper on the kitchen counter or the fridge and write down what you gave and when, so you don't accidentally overdose them on either. (Both dangerous, but acetaminophen overdose particularly so.)
I printed and laminated the charts and put them back in the bathroom where the sad and taped up chart was. Hooray for progress!