10 Tylenol Pm Side Effects To Watch

Tylenol PM is a popular over-the-counter medication used to relieve pain and help with sleep. While it can be effective for many people, like any medication, it can cause side effects. It's essential to be aware of the potential side effects of Tylenol PM to ensure safe use. In this article, we will discuss 10 Tylenol PM side effects to watch, providing you with the information you need to make informed decisions about your health.
Common Side Effects of Tylenol PM

Tylenol PM contains two main ingredients: acetaminophen and diphenhydramine. Acetaminophen is a pain reliever, while diphenhydramine is an antihistamine that helps with sleep. The combination of these two ingredients can cause a range of side effects, from mild to severe. Here are 10 Tylenol PM side effects to watch:
1. Drowsiness and Dizziness
One of the most common side effects of Tylenol PM is drowsiness and dizziness. Diphenhydramine can cause significant drowsiness, which can be a problem if you need to be alert and focused during the day. If you experience drowsiness or dizziness, it’s essential to avoid driving or operating heavy machinery.
2. Headache and Fatigue
Ironically, Tylenol PM can cause headaches and fatigue in some people. This may be due to the acetaminophen or diphenhydramine ingredients. If you experience headaches or fatigue, it’s crucial to talk to your doctor about alternative pain relief options.
3. Stomach Upset and Nausea
Tylenol PM can cause stomach upset and nausea in some individuals. Acetaminophen can be hard on the stomach, especially when taken in high doses or for extended periods. If you experience stomach upset or nausea, try taking the medication with food or milk to help alleviate symptoms.
4. Constipation
Diphenhydramine can cause constipation in some people. This is because antihistamines can slow down bowel movements. If you experience constipation, it’s essential to increase your fiber intake and stay hydrated to help prevent this side effect.
5. Dry Mouth and Throat
Tylenol PM can cause dry mouth and throat due to the antihistamine ingredient. This can be uncomfortable and may lead to other problems, such as bad breath or dental issues. If you experience dry mouth or throat, try drinking plenty of water and practicing good oral hygiene.
6. Blurred Vision
Diphenhydramine can cause blurred vision in some individuals. This is usually temporary and resolves on its own. However, if you experience blurred vision, it’s crucial to avoid driving or performing tasks that require clear vision.
7. Confusion and Disorientation
In rare cases, Tylenol PM can cause confusion and disorientation, especially in older adults or people with certain medical conditions. If you experience confusion or disorientation, it’s essential to seek medical attention immediately.
8. Allergic Reactions
Some people may be allergic to acetaminophen or diphenhydramine, which can cause an allergic reaction. Symptoms of an allergic reaction may include hives, itching, swelling, and difficulty breathing. If you experience any of these symptoms, seek medical attention right away.
9. Increased Heart Rate and Blood Pressure
Tylenol PM can cause an increase in heart rate and blood pressure in some individuals. This is usually temporary and resolves on its own. However, if you have pre-existing heart conditions or high blood pressure, it’s essential to talk to your doctor before taking Tylenol PM.
10. Rebound Insomnia
Tylenol PM can cause rebound insomnia in some people, especially when taken for extended periods. Rebound insomnia is a condition where the body becomes dependent on the medication to fall asleep, leading to difficulty sleeping without it. If you experience rebound insomnia, it’s crucial to talk to your doctor about alternative sleep aids.
Side Effect | Description |
---|---|
Drowsiness and Dizziness | Feeling tired, dizzy, or disoriented |
Headache and Fatigue | Experiencing headaches or feeling tired and weak |
Stomach Upset and Nausea | Feeling queasy, nauseous, or experiencing stomach pain |
Constipation | Having difficulty passing stools or experiencing hard, dry stools |
Dry Mouth and Throat | Feeling dry, sticky, or uncomfortable in the mouth and throat |
Blurred Vision | Experiencing blurry or unclear vision |
Confusion and Disorientation | Feeling confused, disoriented, or unsure of surroundings |
Allergic Reactions | Experiencing hives, itching, swelling, or difficulty breathing |
Increased Heart Rate and Blood Pressure | Experiencing a rapid heartbeat or high blood pressure |
Rebound Insomnia | Having difficulty sleeping without the medication |

In conclusion, while Tylenol PM can be an effective medication for relieving pain and helping with sleep, it's essential to be aware of the potential side effects. By understanding the possible side effects and taking steps to minimize them, you can use Tylenol PM safely and effectively.
What is the recommended dosage of Tylenol PM?
+The recommended dosage of Tylenol PM is 2 caplets at bedtime, not to exceed 2 caplets in 24 hours. However, it’s essential to follow the instructions on the label and talk to your doctor if you have any questions or concerns.
Can I take Tylenol PM with other medications?
+It’s crucial to talk to your doctor before taking Tylenol PM with other medications, especially if you have pre-existing medical conditions or take medications for other health issues. Your doctor can help you determine the safest course of treatment.
How long can I take Tylenol PM?
+Tylenol PM is intended for short-term use only. If you need to take the medication for an extended period, it’s essential to talk to your doctor about alternative treatment options. Taking Tylenol PM for too long can lead to rebound insomnia and other side effects.