diphenhydramine — Dr. Peters’s Blog — Brandon Peters, MD

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diphenhydramine

What to Take When You Can’t Sleep

A good night’s sleep is crucial for overall health and well-being, yet many individuals find themselves struggling with sleeplessness, whether due to stress, lifestyle factors, or underlying health conditions. While sleep problems can sometimes be temporary, persistent insomnia can lead to significant physical and mental health issues. If you’re having trouble sleeping, you may wonder what you can take to help fall asleep and improve your sleep quality. The answer depends on the underlying cause of your insomnia, and the options range from over-the-counter supplements to prescription medications. Below, we explore various remedies that can help when you can't sleep, both natural and pharmaceutical, and how to determine what might be best for you.

1. Over-the-Counter Sleep Aids

For many individuals, over-the-counter (OTC) sleep aids are a go-to solution when they struggle with occasional sleeplessness. These medications are typically sold without a prescription and contain ingredients designed to promote drowsiness or relaxation.

Diphenhydramine or Doxylamine

One of the most common OTC sleep aids is diphenhydramine, an antihistamine commonly found in medications like Benadryl and “PM” medications. Doxylamine is found in Unisom. Diphenhydramine and doxylamine work by blocking histamine receptors in the brain, which reduces wakefulness and promotes sleepiness. While it can be effective for occasional use, it’s important to note that this drug can cause grogginess the next morning, and repeated use may lead to tolerance, meaning its effectiveness diminishes over time. There is concern that long-term use may contribute to dementia risk.

Melatonin

Melatonin is a hormone that your body naturally produces to regulate the sleep-wake cycle. Supplementing with melatonin is a popular remedy for people who have difficulty falling asleep, particularly for those with circadian rhythm disorders or those who are adjusting to new time zones (like in the case of jet lag). Melatonin supplements are available in various doses, and they are generally considered safe for short-term use. However, it’s best to consult a healthcare professional about the right dosage and timing, as too much melatonin can actually disrupt your sleep cycle.

Valerian Root

Valerian root is a herbal supplement often used to treat insomnia and anxiety. It has sedative properties and may help some individuals fall asleep more quickly. The exact way it works is not fully understood, but it is believed to increase the amount of gamma-aminobutyric acid (GABA) in the brain, which promotes relaxation and sleep. While valerian root is generally considered safe for short-term use, it can cause side effects such as headaches or dizziness in some individuals. It’s advisable to use it under the guidance of a healthcare provider.

2. Prescription Sleep Medications

If OTC options do not provide the relief you need, prescription medications might be an option. However, these medications are usually prescribed for individuals who have chronic insomnia or other sleep disorders. Prescription sleep aids should only be used under the supervision of a doctor because they may cause side effects, interactions with other medications, and potential dependency.

Benzodiazepines

Benzodiazepines, such as temazepam (Restoril), lorazepam (Ativan), and alprazolam (Xanax), are often prescribed for short-term insomnia. These medications work by enhancing the effects of GABA, a neurotransmitter that calms brain activity and induces sleep. While they are effective, they are typically not recommended for long-term use due to their potential for dependence and withdrawal symptoms. Benzodiazepines can also cause side effects like dizziness, memory issues and dementia, and daytime drowsiness.

Non-Benzodiazepine Sedatives

Non-benzodiazepine sleep aids, such as zolpidem (Ambien) and eszopiclone (Lunesta), are commonly prescribed to treat insomnia. These medications have a similar effect to benzodiazepines but are often considered to be less habit-forming. Non-benzodiazepines work by targeting the brain’s receptors responsible for sleep and can help people fall asleep more quickly and stay asleep throughout the night. However, like benzodiazepines, they can cause drowsiness the next day, memory impairment, sleep-related behaviors, and have the potential for misuse.

Antidepressants

Certain antidepressants, like trazodone (Desyrel) and amitriptyline (Elavil), are sometimes prescribed off-label to help with sleep. These medications have sedative effects and are often used for individuals who experience insomnia due to anxiety or depression. They are generally considered safe for long-term use, but side effects can include daytime grogginess, dizziness, and weight gain. Additionally, these medications can interact with other antidepressants and should only be used under a doctor’s supervision.

3. Natural and Herbal Remedies

For those who prefer natural approaches, there are several herbal remedies and lifestyle changes that may help promote relaxation and improve sleep. While the evidence for these remedies varies, many people find them helpful for reducing stress and encouraging restful sleep.

Lavender

Lavender is a widely used herb known for its calming and relaxing properties. Studies have shown that lavender can help reduce anxiety, stress, and insomnia. You can use lavender in various forms, such as essential oils, teas, or supplements. Diffusing lavender oil in your bedroom before bed or adding a few drops to your pillow can create a soothing environment that promotes better sleep.

Chamomile

Chamomile is another herb commonly used to improve sleep quality. It has mild sedative effects and is often consumed as a tea before bed. Chamomile has been used for centuries to treat anxiety and insomnia, and it may help calm the nervous system, making it easier to relax and fall asleep. While it is generally considered safe, some people may experience allergic reactions, particularly those who are allergic to ragweed or daisies.

Magnesium

Magnesium is a mineral that plays a vital role in many bodily functions, including muscle relaxation and sleep regulation. Studies have shown that magnesium supplementation may help improve sleep quality, especially for those with low magnesium levels. Magnesium can be found in foods like leafy greens, nuts, and seeds, or it can be taken as a supplement. Some people prefer magnesium supplements or magnesium oil for topical use to promote relaxation before bedtime.

4. Lifestyle and Behavioral Changes

Sometimes, sleep difficulties are not solely resolved by taking medication or supplements. Lifestyle changes and good sleep hygiene can have a significant impact on improving your sleep quality in the long term. A few strategies to consider include:

  • Establishing a consistent bedtime routine: Going to bed and waking up at the same time every day helps regulate your body’s internal clock.

  • Creating a calming environment: Keeping your bedroom cool, dark, and quiet can help signal to your body that it’s time to sleep.

  • Limiting caffeine and alcohol: Both caffeine and alcohol can disrupt your sleep patterns, so try to avoid consuming them several hours before bed.

  • Managing stress: Practicing relaxation techniques such as meditation, deep breathing, or gentle stretching before bed can help reduce stress and anxiety, making it easier to fall asleep.

5. When to See a Doctor

If you’ve tried over-the-counter remedies, herbal supplements, and lifestyle changes without success, it may be time to consult a doctor. Persistent sleep problems could be indicative of an underlying condition, such as sleep apnea, restless leg syndrome, anxiety, or depression. A healthcare provider can help determine the root cause of your sleep difficulties and provide more targeted treatment options. Cognitive behavioral therapy for insomnia (CBTI) is the preferred treatment for insomnia that persists beyond 3 months.

Conclusion

There are a variety of options to consider when you can’t sleep, ranging from over-the-counter supplements to prescription medications and natural remedies. What you choose to take depends on your individual circumstances, including the underlying cause of your sleep issues. While medications can provide short-term relief, incorporating lifestyle changes and improving sleep hygiene may offer long-lasting benefits for your sleep quality. Ultimately, if sleeplessness persists, it’s important to seek professional advice to address any potential underlying health concerns.

This article was created using OpenAI’s ChatGPT on February 21, 2025 and it was personally reviewed and edited by Brandon Peters, M.D. to ensure its accuracy. This use of augmented intelligence in this way allows the creation of health information that can be trusted.

How Prescription Medications May Affect Sleep Apnea

Sleep apnea is a serious sleep disorder characterized by repeated interruptions in breathing during sleep, leading to fragmented sleep and a host of health issues. While lifestyle changes and treatments like continuous positive airway pressure (CPAP) therapy are crucial for managing this condition, prescription medications can also play a significant role in either exacerbating or alleviating sleep apnea symptoms. Understanding how various medications can affect sleep apnea is essential for patients and healthcare providers in managing the disorder effectively.

Types of Medications That Can Affect Sleep Apnea

Sedatives and Hypnotics:

Sedative medications, including benzodiazepines (like lorazepam, diazepam, clonazepam, temazepam, and triazolam), may relax the muscles in the throat and worsen obstructive sleep apnea (OSA). By reducing the tone of the upper airway muscles, these drugs can lead to more frequent and severe apneic episodes.

Opioids:

Opioid medications, commonly prescribed for pain management, can also have a detrimental impact on sleep apnea. Opioids can depress the central nervous system, reducing respiratory drive during sleep and increasing the likelihood of apnea episodes. Research has shown that opioid use is associated with a higher prevalence of sleep apnea, including central sleep apnea, and can complicate treatment outcomes for patients already diagnosed with the disorder.

Antidepressants:

Antidepressants, particularly certain selective serotonin reuptake inhibitors (SSRIs), may influence sleep architecture and potentially affect sleep apnea severity. While some studies suggest that SSRIs may improve sleep quality for some individuals, they can also lead to weight gain, which is a significant risk factor for sleep apnea. Additionally, some antidepressants may suppress REM sleep, during which the airway is more prone to collapse, and this may have a beneficial effect in some individuals. As a result, the choice of antidepressant should be carefully considered in patients with sleep apnea.

Antihistamines:

Over-the-counter antihistamines (such as diphenhydramine) and some prescription antihistamines can cause sedation and drowsiness. While they may help some individuals fall asleep, their sedative properties can worsen sleep apnea symptoms. Similar to sedatives, these medications can relax the throat muscles, increasing the risk of airway obstruction. Therefore, individuals with sleep apnea should be cautious when using these medications, particularly in the context of other sedating drugs.

Beta-blockers:

Beta-blockers are commonly prescribed for hypertension, heart disease, and anxiety. Some studies suggest that beta-blockers may help reduce sleep apnea severity, particularly in patients with comorbid hypertension. However, others have indicated that these medications can cause sleep disturbances, including insomnia and vivid dreams, which may indirectly affect sleep quality for individuals with sleep apnea. Beta-blockers may have an effect on melatonin produced by the pineal gland. The impact of beta-blockers on sleep apnea may vary depending on the specific medication and the individual patient.

Stimulants:

Stimulant medications, such as those used to treat attention-deficit hyperactivity disorder (ADHD), can also influence sleep apnea. While stimulants can help improve alertness and cognitive function during the day, they may cause insomnia and disrupt the sleep cycle. For individuals with sleep apnea, this can lead to a vicious cycle of poor sleep quality and increased daytime fatigue, making it even harder to manage their condition effectively.

Managing Medications in the Context of Sleep Apnea

Given the potential impact of prescription medications on sleep apnea, it is essential for patients to engage in open discussions with their healthcare providers about their medication regimens. Here are some steps to consider:

  • Comprehensive Medication Review: Patients with sleep apnea should regularly review their medications with their healthcare providers. This includes discussing all prescription medications, over-the-counter drugs, and supplements. Providers can help identify any medications that may exacerbate sleep apnea symptoms.

  • Evaluating Alternatives: If a medication is found to worsen sleep apnea, healthcare providers can explore alternative treatments that may be more suitable. For example, non-sedating medications for anxiety or depression might be considered for patients experiencing symptoms related to these conditions.

  • Monitoring and Follow-Up: Continuous monitoring of sleep apnea symptoms is crucial, especially when starting new medications. Regular follow-ups can help assess whether any changes in medication are impacting sleep quality or apnea severity.

  • Lifestyle Modifications: Alongside medication management, patients should focus on lifestyle changes that can improve sleep apnea symptoms. This includes maintaining a healthy weight, avoiding alcohol and sedatives, and adopting a regular sleep schedule.

  • Using CPAP Effectively: For patients already using CPAP therapy, it's essential to ensure that the equipment is properly fitted and used consistently. Medication interactions can sometimes lead to decreased adherence to CPAP, so maintaining a strong treatment regimen is vital.

Conclusion

Prescription medications can have a significant impact on sleep apnea, either by alleviating symptoms or worsening the condition. Sedatives, opioids, antidepressants, antihistamines, beta-blockers, and stimulants each have the potential to influence sleep quality and apnea severity in different ways. Therefore, it is crucial for individuals with sleep apnea to communicate openly with their healthcare providers about their medications and explore alternatives that do not compromise their health.

By taking an active role in managing their medications, patients can optimize their treatment for sleep apnea, leading to better overall health and improved quality of life. Ultimately, the goal is to ensure that medication management aligns with the broader strategy of effectively controlling sleep apnea and mitigating its associated risks.

This article was created using OpenAI’s ChatGPT on August 2, 2024 and it was personally reviewed and edited by Brandon Peters, M.D. to ensure its accuracy. This use of augmented intelligence in this way allows the creation of health information that can be trusted.