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Calculate safe Tylenol/acetaminophen doses for adults and children
This calculator is for educational purposes only. Acetaminophen overdose can cause severe liver damage and death. Always read product labels carefully and never exceed the maximum daily dose. Consult a healthcare provider if unsure.
Based on Children's Tylenol liquid (160mg/5mL)
| Weight (lbs) | Weight (kg) | Dose (mg) | Liquid (mL) |
|---|---|---|---|
| 6-11 | 2.7-5 | 40 mg | 1.25 mL |
| 12-17 | 5.5-7.9 | 80 mg | 2.5 mL |
| 18-23 | 8-10.9 | 120 mg | 3.75 mL |
| 24-35 | 11-15.9 | 160 mg | 5 mL |
| 36-47 | 16-21.9 | 240 mg | 7.5 mL |
| 48-59 | 22-26.9 | 320 mg | 10 mL |
| 60-71 | 27-31.9 | 400 mg | 12.5 mL |
| 72-95 | 32-43.9 | 480 mg | 15 mL |
Based on 10-15 mg/kg every 4-6 hours. Maximum 75 mg/kg/day or 5 doses.
Acetaminophen is found in over 600 medications! Taking multiple products containing acetaminophen can lead to dangerous overdose. Always check the ingredient list.
When taken at normal doses, the liver safely processes acetaminophen. However, at high doses or with certain risk factors, a toxic byproduct called NAPQI accumulates and can cause severe liver damage within 24-72 hours. This damage may be irreversible.
For short-term use (up to 10 days), acetaminophen is generally safe when taken as directed. Long-term daily use should be monitored by a doctor as it can affect the liver. If you need daily pain relief, consult your healthcare provider for appropriate options.
Yes, acetaminophen and ibuprofen can be taken together or alternated, as they work differently. This is often done for better pain control. However, be careful not to exceed the maximum dose of either medication and watch for combination products containing both.
Early symptoms may be subtle: nausea, vomiting, loss of appetite, sweating, and pale skin. Within 24-72 hours, signs of liver damage appear: right upper abdominal pain, yellowing of skin/eyes (jaundice), dark urine, confusion. Seek immediate medical attention if overdose is suspected.
Neither is universally "safer" - it depends on the individual. Acetaminophen is safer for those with stomach issues, kidney disease, or on blood thinners. Ibuprofen is safer for those with liver disease. Both are safe when used as directed for short periods.
The FDA reduced the recommended maximum from 4000mg to 3000mg per day in 2011 due to liver safety concerns. Some countries still use 4000mg as the healthy adult limit. Those with liver disease or who drink alcohol should use 2000mg as their maximum.
Acetaminophen is generally considered the safest OTC pain reliever during pregnancy. However, recent studies suggest limiting use to when truly needed. NSAIDs like ibuprofen are NOT recommended during pregnancy, especially in the third trimester. Always consult your OB-GYN.
If you suspect an acetaminophen overdose, seek emergency medical help immediately: