
Sleep aids are medications or supplements that help people fall asleep, stay asleep, or wake up refreshed. Two popular over-the-counter sleep aids are Sominex and Unisom, which contain different active ingredients. Sominex contains diphenhydramine, an antihistamine that blocks histamine production to make users feel drowsy. Unisom, on the other hand, contains doxylamine succinate, another antihistamine that blocks histamine and acetylcholine, resulting in a longer-lasting sedative effect. While both Sominex and Unisom can help with occasional insomnia, Unisom is recommended for those seeking a longer-lasting solution, as it is effective for up to eight hours.
| Characteristics | Values |
|---|---|
| Active ingredient | Sominex: diphenhydramine |
| Unisom: doxylamine succinate | |
| Effectiveness | Sominex: lasts up to seven hours |
| Unisom: lasts up to eight hours | |
| Usage | Sominex: can be used in children 12 and older |
| Unisom: cannot be used in children under 12 | |
| Side effects | Sominex: may cause excitation rather than sedation in older people |
| Unisom: mild side effects that usually resolve within 24 hours | |
| Safety | Sominex: may cause confusion and falls in older adults |
| Unisom: non-habit-forming |
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What You'll Learn
- Sominex contains diphenhydramine, an antihistamine with sedative effects
- Unisom contains doxylamine succinate, a non-habit forming antihistamine
- Both Sominex and Unisom are over-the-counter sleep aids
- Unisom is the #1 doctor-recommended OTC sleep-aid brand
- Side effects of Sominex and Unisom include drowsiness and confusion

Sominex contains diphenhydramine, an antihistamine with sedative effects
Sominex is an antihistamine used to treat symptoms of allergies, hay fever, and the common cold. These symptoms include a rash, itching, watery eyes, and a runny nose. It is also used to treat motion sickness, induce sleep, and treat certain symptoms of Parkinson's disease. Sominex contains diphenhydramine, a first-generation antihistamine with hypnotic properties. Diphenhydramine is also available under the brand name Benadryl. It is important to note that Sominex may have side effects, and it is not suitable for children under 12 years old.
Diphenhydramine works by blocking histamine, a natural substance produced by the body during an allergic reaction. This blocking action causes drying effects, which help alleviate symptoms such as watery eyes and a runny nose. Additionally, diphenhydramine has sedative effects, making it useful for inducing sleep. The sedative effect can last up to seven hours.
It is important to use Sominex as directed and not exceed the recommended dosage. Side effects of diphenhydramine can include dizziness, drowsiness, blurred vision, dry mouth, constipation, and confusion, especially in older adults. Alcohol consumption can increase certain side effects, and operating heavy machinery or driving should be avoided until you know how Sominex affects you.
Sominex may interact with other medications, particularly those that cause drowsiness, such as opioid medications, sleep aids, muscle relaxants, or anti-anxiety drugs. It is crucial to consult a doctor or pharmacist before using Sominex in conjunction with any other medications or supplements. Additionally, Sominex has the potential for abuse, and chronic use may lead to dependence.
In summary, Sominex, which contains diphenhydramine, is an antihistamine medication with sedative effects that can be used to treat allergies and induce sleep. However, it is important to use it with caution and under the guidance of a healthcare professional due to potential side effects and interactions with other substances.
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Unisom contains doxylamine succinate, a non-habit forming antihistamine
Unisom is an over-the-counter sleep aid that contains doxylamine succinate, a non-habit forming antihistamine. Antihistamines are commonly used to help relieve symptoms of allergies, as they have a sedative effect. Doxylamine succinate is a clinical-strength histamine blocker that works in a similar way to diphenhydramine, which is found in OTC sleep aids like Sominex and Nytol. Doxylamine succinate is as effective as diphenhydramine but tends to work longer, for up to eight hours. It is also safe to use during pregnancy.
Unisom SleepTabs contain 25 mg of doxylamine succinate and are designed to help you fall asleep and stay asleep through the night. They are FDA-approved, clinically tested, and proven effective. Unisom is the #1 doctor-recommended OTC sleep aid brand and is also recommended by pharmacists. The tablets should be taken 30 minutes before bed and can be taken with or without food. However, alcohol should be avoided when taking Unisom SleepTabs.
Unisom SleepTabs are suitable for adults and children aged 12 years and over. They are not recommended for children under 12 years of age. Doxylamine succinate is not recommended for young children as it may cause agitation or excitement instead of drowsiness. Before taking doxylamine, it is important to tell your doctor or pharmacist if you have any allergies or medical history, especially breathing problems, glaucoma, heart problems, high blood pressure, liver disease, seizures, stomach problems, or urination problems.
Unisom may cause side effects such as dizziness, drowsiness, or blurred vision. Alcohol and marijuana can increase these side effects. It is important not to drive or operate machinery until you know how Unisom affects you. If you are taking other medications that cause drowsiness, such as opioid pain relievers, sleep drugs, or muscle relaxants, you should consult your doctor or pharmacist before taking Unisom.
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Both Sominex and Unisom are over-the-counter sleep aids
Sleep aids are categorised as prescription drugs, over-the-counter medications, and dietary supplements. Both Sominex and Unisom are over-the-counter sleep aids. Sominex is an over-the-counter sleep aid that contains 25 to 50 milligrams of the antihistamine diphenhydramine per pill. Diphenhydramine is the active ingredient in many over-the-counter sleep aids, including Sominex, Nytol, and Unisom SleepGels, SleepMelts, and SleepMinis. Diphenhydramine works by blocking histamine, a natural chemical that causes alertness, which makes you feel drowsy and helps you fall asleep faster.
Unisom is also an over-the-counter sleep aid, and its active ingredient is the antihistamine doxylamine succinate. Doxylamine succinate is found in Unisom SleepTabs, which are FDA-approved, clinically tested, and proven effective. Like diphenhydramine, doxylamine succinate blocks histamine, causing drowsiness and helping you fall asleep faster. However, doxylamine succinate tends to have a longer duration of action, lasting up to eight hours, and it is not recommended for children under 12.
Both Sominex and Unisom are antihistamines with sedative side effects, meant to treat short-term sleep problems. They can help individuals with occasional insomnia fall asleep faster. However, it is important to note that these medications may also have unwanted side effects, and their effectiveness and safety for treating insomnia are not yet fully established.
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Unisom is the #1 doctor-recommended OTC sleep-aid brand
Sleep-aids are classified as either prescription drugs, over-the-counter medications, or dietary supplements. Unisom is an over-the-counter medication that can help with short-term sleep problems. Its active ingredient is doxylamine succinate, an antihistamine that blocks certain natural substances (like histamine and acetylcholine) that your body makes. The lack of histamine causes drowsiness and helps you fall asleep faster. Unisom is the #1 doctor-recommended OTC sleep-aid brand for several reasons.
Firstly, Unisom is effective in helping people fall asleep faster and stay asleep longer. The active ingredient, doxylamine succinate, is clinically proven to be highly effective. Unisom SleepTabs, for example, can help you fall asleep up to 30 minutes faster and improve your overall sleep quality. This is because doxylamine succinate is a non-habit-forming antihistamine that makes you sleepy by blocking the effects of histamine in the body.
Secondly, Unisom is safe and non-habit-forming. While it can cause drowsiness and other mild side effects, these typically resolve within 24 hours. It is important to follow the recommended dosage and avoid combining Unisom with alcoholic drinks or other sedatives. Unisom is also safe for adults and children aged 12 years and older. However, it is always advisable to consult a doctor or healthcare professional before taking any sleep medication, especially if you are pregnant, breastfeeding, or taking other medications.
Thirdly, Unisom offers a range of products to suit different preferences and needs. For example, they offer SleepGels, SleepMelts, SleepMinis, and SleepTabs, which provide different formats for taking the medication. Additionally, they offer products like Unisom PM Pain, which combines an antihistamine with acetaminophen to address minor pain while sleeping.
Finally, Unisom is easily accessible and affordable. As an over-the-counter medication, Unisom can be purchased without a prescription, making it convenient for those experiencing occasional sleep difficulties. It is also widely available in pharmacies and drugstores. Unisom also offers a money-back guarantee, demonstrating their confidence in the effectiveness of their products.
In summary, Unisom is the #1 doctor-recommended OTC sleep-aid brand due to its effectiveness, safety, range of product offerings, and accessibility. It is a trusted and reliable option for those seeking short-term relief from sleep difficulties. However, it is important to consult a healthcare professional for persistent or chronic sleep issues.
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Side effects of Sominex and Unisom include drowsiness and confusion
Sominex and Unisom are over-the-counter sleep medications with antihistamines as their active ingredients. The former contains diphenhydramine, while the latter contains doxylamine succinate. Both medications can cause drowsiness, which is a desired effect for those struggling with insomnia or other sleep issues. However, it is important to note that operating machinery or driving after taking these medications is not recommended due to the risk of dizziness and lightheadedness.
Sominex and Unisom may also lead to side effects such as dizziness, constipation, stomach upset, blurred vision, decreased coordination, and dry mouth/nose/throat. While these side effects are typically mild and do not require medical attention, they should be reported to a healthcare provider if they persist or worsen. Additionally, more serious side effects like mental/mood changes (including confusion), difficulty urinating, and fast/irregular heartbeat warrant immediate medical attention.
It is always advisable to consult a healthcare professional before taking any medication, including Sominex and Unisom, to ensure safe and effective use. Individual circumstances, medical history, and potential drug interactions should be considered to minimize the risk of adverse events. While these medications can be helpful in managing sleep difficulties, they should be used with caution and under appropriate medical guidance.
While both Sominex and Unisom can be effective sleep aids, the choice between the two depends on individual needs and preferences. Some people may find that one works better for them than the other, so it may be worth trying both under medical supervision to determine personal effectiveness. However, it is crucial to follow the instructions provided with the medication and not exceed the recommended dosage to minimize the risk of side effects.
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Frequently asked questions
Sominex contains diphenhydramine, while Unisom contains doxylamine succinate. Both medications are antihistamines that have sedative side effects.
Sominex and Unisom can both cause drowsiness and other unwanted side effects. Most side effects are mild and will resolve within 24 hours. However, if the side effects are severe or persistent, consult a healthcare provider.
Sominex and Unisom are both effective over-the-counter sleep aids. Sominex contains diphenhydramine, which blocks histamine production to help you fall asleep faster. Unisom contains doxylamine succinate, which is also an antihistamine but tends to work longer, for up to eight hours. Unisom is the #1 doctor-recommended OTC sleep aid brand and is clinically tested and proven effective.









































