When we take prescription medicatio
n, there is always a worry that if they have any side effects, how they would affect our bodies. Certain medications, such as beta blockers and antidepressants, and even supplements like melatonin, can affect our dreams by causing us to have vivid dreams and nightmares.
These unexpected side effects don’t happen to everyone; however, it is helpful to be aware of which medications are most likely to affect your dreams.
Beta blockers are taken to treat high blood pressure and other heart-related conditions. However, they may also block the release of melatonin, which helps the body regulate sleep. When the body produces less melatonin, it may contribute to sleeping problems, including insomnia and nightmares.
Beta blockers are the most common medication associated with disrupting dreaming. According to the National Library of Medicine, one study found that about one-third of people who had nightmares were taking a beta blocker.
Taking a melatonin supplement in the evening may help with nightmares that are caused by beta blockers. It is important to keep in mind that melatonin has its own side effects and can interact with other medications, so it is best to check with your healthcare provider before taking it to make sure that it is safe for you.
Selective serotonin reuptake inhibitors (SSRIs) are used for depression and other mental health conditions. But they can cause sleep changes for some people.
SSRIs raise the levels of serotonin, a chemical that carries messages between nerve cells in the brain and throughout your body. While this improves mood, it can also affect sleep and have a strong effect on dreams. Some SSRIs can make dreams more intense, and one can increase the chance that you will remember your nightmares. Certain SSRIs suppress rapid eye movement (REM) sleep, and this changes the body’s normal sleep cycle, which may contribute to nightmares.
If your dreams become a problem while taking an antidepressant, talk with the healthcare provider who prescribed it. They may recommend the addition of another antidepressant that can help improve sleep quality when taken before bed. They may also decide to switch you to a completely different antidepressant altogether.
Antihistamines are commonly used for allergies; however, some first-generation antihistamines can make you sleepy and can cause nightmares.
Some second-generation antihistamines have been reported to cause medication-induced sleep terrors. Second-generation antihistamines are less likely to affect your sleep, but cetirizine may cause more drowsiness than other medications in this class.
If you are experiencing troublesome dreams because of an antihistamine, talk to your pharmacist or healthcare provider about a different option, as a different antihistamine may work better for you.
Some medications used as sleep aids to treat insomnia can also cause nightmares.
Z-drugs are common medications that are prescribed for sleep.
This class of medication may have an increased risk of nightmares. Z-drugs may also cause hallucinations and sleepwalking, which you won’t remember after you wake up.
The body naturally produces melatonin to help you sleep. However, melatonin, as an over-the-counter supplement used to treat insomnia or jet lag, can cause nightmares. It isn’t known for sure why melatonin causes nightmares, but studies have reported that taking melatonin can increase dreaming, specifically vivid dreams and nightmares.
There are many ways to stop melatonin nightmares, including lowering your dosage or stopping taking it for a few days to see if the nightmares improve. If your healthcare provider recommended taking melatonin, it is important to speak with them before lowering your dosage. You can also try to improve your sleep hygiene by not using any electronic screens for at least an hour before bed, not having any caffeine at least six hours before bedtime, and having a consistent bedtime.
Some people have reported having vivid or abnormal dreams while taking semaglutide, a GLP-1 receptor agonist primarily used for treating type 2 diabetes and obesity. It isn’t clear why this happens, or if it is directly related to medication, so it is a good idea to let your healthcare provider know if your dreams become bothersome.
Certain antibiotics and antiviral medications that fight infections may also cause nightmares. This is due to these medications being able to decrease proteins released by the body that help you sleep to better fight off infection; this can result in disturbed sleep and nightmares.
In most cases, you will only be taking antibiotics for a short period of time, so dream-related side effects should dissipate once treatment is finished.
Certain medications that are used to treat dementia may also affect sleep quality, as they can cause REM sleep behavior disorder (RBD). RBD can cause intense dreams, and sometimes a person’s body might physically act out the dream while asleep.
It is important to keep in mind that dementia itself can also contribute to trouble sleeping, so your healthcare provider may add another medication to take at night to help if nightmares become a problem.
Several types of medications affect dopamine, a crucial neurotransmitter that plays significant roles in mood regulation, motivation, reward, and many physiological processes in the body. These types of medications can cause vivid dreams or nightmares.
Parkinson’s disease is caused by decreased levels of dopamine in the brain, and medications to treat the condition increase dopamine levels, which can lead to nightmares.
Antipsychotic medications used to treat mental health conditions, such as schizophrenia and bipolar disorder, can also affect dopamine.
Some stimulants that are used to treat attention-deficit hyperactivity disorder (ADHD) can also cause vivid dreams, most likely because they can increase dopamine levels.
If you have been prescribed any of these medications, and they give you bad dreams, speak with your healthcare provider, as they can help you manage them. They may change your dose or prescribe a different medication in the same class. They may also suggest adding another medication at night to help you sleep more easily.
It isn’t completely understood how certain medications cause nightmares. The medications that can cause nightmares are often known to affect the brain and may change the levels of chemicals such as melatonin, serotonin, or dopamine, or may have a direct effect on your sleep cycle.
Medication-induced nightmares can vary from person to person. Factors such as mental health conditions or other underlying health conditions can also influence your dreams, so medications may not always be to blame.
If you or a loved one is experiencing nightmares or other sleep disturbances, you can receive treatment at Flushing Hospital Medical Center’s Ambulatory Care Center. To schedule an appointment, please call (718) 670-5486.
All content of this newsletter is intended for general information purposes only and is not intended or implied to be a substitute for professional medical advice, diagnosis or treatment. Please consult a medical professional before adopting any of the suggestions on this page. You must never disregard professional medical advice or delay seeking medical treatment based upon any content of this newsletter. PROMPTLY CONSULT YOUR PHYSICIAN OR CALL 911 IF YOU BELIEVE YOU HAVE A MEDICAL EMERGENCY.