Mr. Monk Takes His Medicine - S3-E9
Factual error: The medication Monk is given is called Doxinyl, which is a real medication, but it's an antibiotic, nothing to do with OCD and certainly wouldn't cause the side effects shown.
Mr. Monk Paints His Masterpiece - S6-E14
Factual error: When Stottlemeyer and Randy are at the painter's daughter's home they find a picture showing him in front of Carson papers, which leads the Captain to say: they have a contract with the treasury, they are producing the paper for the U.S. currency. This is wrong: the treasury is not in charge of printing the Federal Reserve Notes. Rather it is the privately owned Fed that prints the Federal Reserve Notes and then lends it to the treasury at interest. And the interest added is the reason why there will never be enough money to pay the interest, i.e. the state debt.
Suggested correction: While the Federal Reserve is in charge of maintaining our currency (through the creation or destruction of currency, real or digital), the U.S. Department of Treasury is in fact responsible for printing money, through the Bureau of Engraving and Printing.
Mr. Monk Goes to Mexico - S2-E2
Factual error: Monk states that one of the reasons he suspected Dr. Maduro was because the doctor stated the amount of fluid in the victim's lungs in pints, which meant the doctor had worked in the US. But even in the US, the medical profession uses the metric system.
Mr. Monk and the Panic Room - S3-E2
Factual error: The cops gain entry to the panic room to be faced with a chimp waving around a loaded handgun, apparently having shot a man, and shrug and make jokes about reading him his rights, instead of expressing the slightest concern that this animal might shoot them. Cops shoot remotely aggressive dogs all the time, but an ape with a gun doesn't even make them raise an eyebrow. Plus the police never did a gunshot residue test on the chimp. Standard procedure, and would've proven they didn't shoot.
Mr. Monk Gets Jury Duty - S4-E16
Factual error: When Natalie hears the jury's muffled screams inside the locked room she uses the fire extinguisher to tear off the door knob. But a locked door without a knob is actually only harder to open, because like that you cannot turn the mechanism even if it was unlocked.
Mr. Monk and the Really, Really Dead Guy - S5-E15
Factual error: Monk typing the address into his laptop would not affect the trace the agents are doing, it definitely wouldn't pop up on the agent's screen as the result of the trace.
Mr. Monk Takes Manhattan - S3-E1
Factual error: In the episode the victims were murdered with a .22 caliber firearm. However, a short shot of the crime scene focuses on an empty shell casing which comes from a larger caliber firearm, most likely a 9mm parabellum. (00:05:30)
Mr. Monk Meets His Dad - S5-E9
Factual error: The runaway truck ramp has no advance signage (e.g. Runaway Truck Ramp Ahead 1/2 Mile) as real runaway truck ramps do. It has no loose sand to slow down the truck's wheels. And it doesn't point uphill as a real ramp would.
Mr. Monk's Other Brother - S7-E10
Factual error: In the scene where Monk is making pancakes in his kitchen, he is using a stainless steel spatula on a teflon-coated griddle pan. Mr. Monk has OCD and would never risk scratching his pan with a metal utensil.
Mr. Monk and the Class Reunion - S5-E6
Factual error: Stottlemeyer says that if Diane killed herself, her suicide note would go on the public record (and her old nurse would recognize it as a copy of her decades-old note). Since when are suicide notes made public?
Mr. Monk and the End - Part II - S8-E16
Factual error: When announcing Trudy's daughter is in Monterey County, they say that is only 20 minutes away, yet they are in San Francisco. Would take 3 times that long to get there.
Mr. Monk and the Garbage Strike - S5-E2
Factual error: They said the murder occurred on Monday, April 5th (2006). But that was a Wednesday.
Mr. Monk Goes Back to School - S2-E1
Factual error: In the cold opening, Derek said that his wife is very smart and got a 1680 on the SAT. This episode takes place in 2003, the writing portion that was added to make the max (2400, not 1600) was in 2005.
Mr. Monk Goes to Jail - S2-E16
Factual error: The murdered man is killed by poison while having his last meal just before they execute him that night. Death row inmates have their last meal one to two days before they're executed.
Mr. Monk and the Big Game - S5-E3
Factual error: All the players have their first names on the back of their jerseys. They should have their last names on the jerseys for better identification considering some of them would probably have the same first name.
Suggested correction: This isn't a mistake just because a school does it a different way than what you expect. Not to mention that some people also have the same last name, so using the last name would create the same "problem." All they would have to do is add a last name initial.
Mr. Monk and the Airplane - S1-E13
Factual error: Though anti-freeze is lethal it does not kill quietly and fast but rather agonizingly, painfully and slowly, inducing vomiting and fever. (00:30:30)