What is Alteril Natural Sleep Aid?

Alteril Natural Sleep Aid is an over-the-counter (OTC) natural dietary supplement used to promote a restful sleep and a healthy sleep cycle. The active ingredient, melatonin, is a hormone that your brain naturally produces to maintain your sleep-wake cycle. The production of this hormone is actually dependent on light. 

Melatonin production increases after sunset, with levels staying high throughout the night to promote sleepiness. In contrast, melatonin production decreases early in the morning, with levels staying low throughout the day to promote wakefulness.

Exposure to blue light at night, changes in time zone, and working overnight shifts can all affect your body's production of melatonin.

Side Effects

The most common side effects from Alteril Natural Sleep Aid include:

  • Headache

  • Stomach discomfort

  • Dizziness

  • Daytime sleepiness

  • Drowsiness

  • Grogginess the next day

  • Irritability


Do not take more than suggested on the product label. This product is meant to be taken as needed for occasional sleeplessness. So, if you've been having trouble sleeping for over two weeks, speak to your doctor before continuing to use Alteril Natural Sleep Aid. Do not take melatonin while driving or operating heavy machinery.

If you have any medical condition or are pregnant or breastfeeding, ask your doctor if melatonin is the right choice for you. While short-term use of melatonin is generally considered to be safe during pregnancy and breastfeeding, not enough data currently exists to recommend the use of this product in this population.

Lastly, Alteril Natural Sleep Aid should not be used by anyone under the age of 18.


Melatonin may have mild to moderate interactions with many drugs. For instance, taking melatonin with a medication that causes sleepiness may increase the side effects of melatonin. If you're currently on medication and are unsure of potential interactions, check with a doctor or pharmacist prior to taking Alteril Natural Sleep Aid.


This supplement contains natural ingredients that work to help you sleep better. Similar to the ingredients in Relaxium, each serving (2 tablets) of Alteril Natural Sleep Aid contains1 :

  • 665 milligrams of L-tryptophan, an amino acid that may play a role in your mood and sleep

  • 50 milligrams of glycine, an amino acid that may improve sleep quality

  • 4 milligrams of melatonin, a hormone that your brain naturally makes to regulate your sleep-wake cycle

  • proprietary blend of: Skullcap Extract (root), Valerian Root Extract, Chamomile Extract (flower), Hops Extract (flower), Passionflower Extract (flower)


Cabinet Natural Sleep Aid is a great alternative sleep supplement to Alteril Natural Sleep Aid. In fact, supplements from Cabinet Health are:

Curated by Experts: Physicians and pharmacists worked together to provide you with common products you may need. These products are among the best of what’s out there.

Rigorously Tested: All of our factories are FDA-audited, ensuring world-class manufacturing processes and healthy sourcing. After leaving our factories, your medicine goes straight to a Valisure laboratory where each batch is tested for purity, safety (safe from carcinogens and impurities), and gluten (medicines are gluten-free). Believe it or not, this is not a common practice in healthcare!

Better for the Environment: Cabinet has developed the first, and only, non-plastic packaging in pharmaceuticals to address the 194 billion single-use plastic bottles produced by the industry each year. In addition to sustainability in packaging, we invest in plastic offsetting for any plastic still produced in our supply chain, while also providing carbon neutral shipping for all of our customers.

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Is it safe to take Alteril Natural Sleep Aid?

This product, when taken as directed, is generally safe. If you're pregnant, breastfeeding, or have other medical conditions, talk to your doctor before taking Alteril Natural Sleep Aid.

What are the side effects of Alteril Natural Sleep Aid?

The most common side effects from Alteril Natural Sleep Aid include:

  • Headache

  • Dizziness

  • Daytime sleepiness

  • Irritability

  • Grogginess the next morning

  • Drowsiness

How long does it take for Alteril Natural Sleep Aid to work?

You may start to feel the effects of the supplement within 30 minutes to an hour.

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How many Alteril Natural Sleep Aid tablets should i take?

It's recommended to take two tablets one hour before bedtime.