Infant Tylenol Dosage Chart by Weight You’ll notice on the bottle of Infant Tylenol that it doesn't give dosages for children under 2 years old, but instead says to call your doctor. She'll be able to recommend whether or not to give Tylenol and what the correct dosage should be based on baby's weight. Because your doctor told you to give.8 ml, you should be fine. If you are worried, call and talk to a nurse to clarify. My son usually develops a fever after vaccinations, and I give him Tylenol or Motrin. He is now old enough for Motrin. If your doctor says it is okay, you can still give him Tylenol. If your son has a fever for more than a few days, call the doctor back. It may be something. My baby has the cold but doesnt have a fever. I bought tylenol infant drop how much should I give him? He or she will know how much is safe for your baby. 2. Use the right dosage device – Devices may measure in either milliliters or ounces, so always use the tool that came with the medicine you’re going to give a baby. I had the same problem.my son is 2 1/2 months old and weigh 14 pounds so when I call the clinic how much tylenol needs to give him they told me 2.5ml only if he has fever. My daughter’s friend gives her baby, who is now 18 months old tylenol to make her sleep better. She has been doing this for a long time. She has been doing this for a long time. I keep the baby four nights a week and I have trouble getting her to sleep (I don’t give her anything unless she is sick). The amount of Tylenol you can give your infant before their vaccinations depends on their weight. On the bottle there are dosage instructions, but if your child is younger than the ages on the bottle you will need to call the pediatrician. Baby Tylenol is about the safest pain relief we can give our infants. As far as I know, there is no set after this many days you cannot keep using this or damage will occur , though you do run a risk with repeated use of the baby getting 'used' to it and it not working on them anymore. After 2 days of a fever you should go to a doctor, so there's limits like that, but not that you have to stop. Doctors give trusted answers on uses, effects, side-effects, and cautions: Dr. Wasser on how much infant tylenol for 8 month old: Usually the parents have more discomfort than baby. Fewer drugs are better than more drugs. Cold teething rings are safe to use without relying on Tylenol (acetaminophen). Find out how much ibuprofen (also known as Motrin or Advil) to give your child, based on the child's weight. Teething: Your baby's first teeth Find out when most babies start to teeth, learn the signs of teething, and get tips to help your teething baby feel better.