That evolution already provides the infant with some very strong protection including two blood barriers to protect the developing brain is easily overseen.
The dosis makes the poison and there are numerous examples of addicted, underfed, stressed and overworked pregnant women giving birth to healthy intelligent childs, even in dirty and polluted environments.
Drinking a beer or taking medicine is not harming the child in any way, as long as it is done in moderation.
The paracetamol problem is an old one, because people tend to take to much of it, when feeling the slightest discomofort. Combined with coffein, aspirin and or alcohol it has a huge draw on liver and kidneys. You have to diffentiate between taking a pill once a month and eating one package per week. Both would be inside the recommended dosage, but are clearly different.
For pregnant women it is a bit more difficult than 9 month from modern comforts, so some little remedy once in a while can go a long way.
While undergoing one of the most intense transformations the human body is capable of.
Women are already told to avoid everything not strictly necessary during pregnancy. Oh, but they're also supposed to keep working, commuting, handling the modern world without 'modern comfort'. This is all without saying that pregnancies can be pretty painful and a shitty experience. How about we give them a break (if they want) or, barring that, a little empathy. And try to find something to help?
Tylenol is a marketing hack, not a painkiller.
I was also talking about lowering fever, I suppose it doesn't work for that either?
It's fairly conclusive evidence, please take the time to review.
For example, they've got a study on Paracetamol in treatment of the Common Cold. You might be surprised to see the headline outcome is paracetamol doesn't work. But wait, in what sense exactly doesn't it work? Well, the key observation is that people taking paracetamol still sneeze. Sure, lots of them say they feel better, but if we just count the sneezes we can see it didn't help at all...
Well, I'm guessing most readers have had a nasty cold at some point, and I leave it to you to decide whether "My headache felt better but I was still sneezing" means the cheap medicine was ineffective and you shouldn't have bothered.
Edited to add: Or, say, what one on post-surgical pain relief has to say about paracetamol:
"A single dose of paracetamol provides effective analgesia for about half of patients with acute postoperative pain, for a period of about four hours"
So that's nice.