
Kirkland Signature Sleep Aid Review Summarized
Advantages
- Can help with sleep issues to some degree short-term
- Affordable
Drawbacks
- Relies only on Doxylamine Succinate, a chemical
- Not the safest option long-term
- May lead to dependence
- Lacks natural ingredients that have been clinically shown to promote better sleep
Summary: Kirkland Signature Sleep Aid is a product claimed to support sleep. It relies primarily on the chemical Doxylamine Succinate, which is an antihistamine, but due to its sedative properties, it can help with sleep issues short-term to some extent.
However, Doxylamine Succinate does come with some risks and potential side effects if consumed long-term. A better alternative to that would be some natural ingredients such as Rhodiola Rosea, L-Theanine, and Passionflower, all of which are unfortunately missing from this product.
Because of that, and the safety issues, we can’t recommend Kirkland Signature Sleep Aid for long-term consumption.
About Kirkland Signature Sleep Aid Review
Kirkland Signature Sleep Aid is a dietary supplement claimed to support, as the name of the product says, your sleep quality. It comes in the form of tablets, with each jar containing 96 tablets. The product is claimed to help you provide some of the following benefits:
- Fall asleep faster
- Promoting drowsiness
- Relief from sleeplessness
Let’s see if Kirkland Signature Sleep Aid is actually any good by taking the look at the ingredient formula!
What’s Inside?

Kirkland Signature Sleep Aid contains the active ingredient Doxylamine Succinate, which is an antihistamine. Each tablet of Kirkland Signature Sleep Aid provides 25 mg of Doxylamine Succinate. It is important to note that Doxylamine Succinate primarily works by blocking histamine and acetylcholine, substances naturally produced by your body.
By reducing the levels of histamine, it can potentially induce drowsiness within 45 to 60 minutes, and that way, it is supposed to help you with sleep.
Are The Ingredients in Kirkland Signature Sleep Aid Good?
While Doxylamine Succinate is primarily used to treat allergies, it can also work as a sleep aid due to its ability to its sedative properties.
However, it’s worth noting that individual responses can vary, and what works for one person may not work the same way for another.
However, Doxylamine Succinate is a chemical, and prolonged usage of it may lead to dependence or tolerance, meaning that higher doses may be required over time to achieve the same sleep-inducing effects.
Moreover, long-term use of Doxylamine Succinate can increase the risk of certain side effects. These may include dry mouth, dizziness, blurred vision, constipation, and urinary retention.
We’d prefer a more natural approach. In other words, Kirkland Signature Sleep Aid would have been a far better sleep aid supplement if it uses natural ingredients such as Rhodiola Rosea, L-Theanine, and Passionflower, all of which are completely natural, safe, and have been proven to help promote relaxation and better sleep quality overall.
If these natural ingredients were added, the risk of side effects would be minimal with this supplement, and you would be able to take it consistently for longer periods of time with no fear.
Dosage Instructions (How to Take)
For individuals who are 12 years old and above, it is recommended to consume a single tablet of Kirkland Signature Sleep Aid approximately 30 minutes before bedtime.
This should be done once a day, adhering to the recommended dosage or following the instructions provided by a healthcare professional. However, it is important to note that this sleep aid should not be used by children under the age of 12.
What do Others Say?
Most customer reviews on Kirkland Signature Sleep Aid we’ve seen on Amazon were positive, but there are many users unsatisfied with its effectiveness, as well as the safety of the product overall. Many users stated that they had experienced some side effects.
Side Effects of Kirkland Signature Sleep Aid?
As we previously mentioned, Kirkland Signature Sleep Aid can cause side effects if used for a prolonged period of time, such as constipation, dizziness, and dry mouth.
For those who are looking for some short-term benefits with no prolonged usage of the product, the risk of side effects is minimal, depending on the person.
Make sure to talk to your doctor before taking this product for the first time, especially if you have some sort of condition or if you’re already taking medicine.
Cost & Value
We have found Kirkland Signature Sleep Aid to be available on Amazon for the price of $11.42 for 192 tablets, which is very affordable. However, we’ve found that cheap products like Kirkland Signature Sleep Aid usually are of lower quality and don’t work for many people.
It’s better to choose a more expensive and natural product, in our opinion, if you’re looking for an effective stress-free supplement without having to fear side effects.
Kirkland Signature Sleep Aid Review: The Bottom Line
Kirkland Signature Sleep Aid is promoted as a sleep aid product but is actually an antihistamine that can help with sleep to some extent due to its sedative properties.
Unfortunately, this product only relies on chemical, and its efficacy and safety long-term isn’t the best. That’s why we advise looking for an alternative natural sleep aid supplement.
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