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Nytol Herbal One-A-Night - 21 Tablets

Nytol Herbal One-A-Night - 21 Tablets

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  • ✔️ Contains 385 mg valerian root extract per tablet for sleep support
  • ✔️ Registered MHRA Traditional Herbal Medicinal Product — quality assured
  • ✔️ One tablet nightly — simple, straightforward dosing routine
  • ✔️ Suitable for adults 18+ seeking a herbal sleep option
  • ✔️ 21-tablet pack provides a full three-week supply

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Are Herbal Sleep Aid Tablets Right for You?

 

If you've been lying awake at night, watching the minutes tick by and wondering why sleep just won't come, you're far from alone. The NHS estimates that around one in three people in the UK experience some form of sleep problem at some point in their lives. Herbal sleep aid tablets like Nytol Herbal One-A-Night offer a gentle, plant-based option for those nights when your mind simply won't switch off. This product contains valerian root dry extract — a herb with a long history of traditional use for relieving occasional sleeplessness and mild sleep disturbances. You can browse our full range of options in our sleep aid collection if you'd like to compare alternatives.

Nytol Herbal One-A-Night is registered with the MHRA as a Traditional Herbal Medicinal Product (THMP). That registration matters — it means the product has met standards for quality, safety, and traditional use, even though it isn't a licensed medicine in the conventional sense. Each pack contains 21 tablets, giving you a three-week supply when used as directed.

 

How Does Nytol Herbal One-A-Night Work?

 

Valerian (Valeriana officinalis) is the active ingredient here. It's been used for centuries across Europe as a remedy for restlessness and difficulty sleeping. While the exact mechanism isn't fully understood, research suggests valerian may interact with gamma-aminobutyric acid (GABA) receptors in the brain — the same receptors targeted by some prescription sleep medicines, though in a much milder way. Each tablet contains 385 mg of valerian root dry extract.

  • Valerian root extract may support GABA activity, promoting a calmer mental state
  • It is thought to reduce the time it takes to fall asleep
  • It does not cause the same level of sedation as prescription hypnotics
  • Effects are gradual — some people notice improvement after a few nights of consistent use

 

Who Should Consider Using Nytol Herbal One-A-Night?

 

This product is designed for adults aged 18 and over who experience occasional difficulty sleeping. It's particularly suited to people who prefer a herbal approach before considering stronger options. That said, it isn't appropriate for everyone — and if your sleep problems are persistent or linked to an underlying health condition, a conversation with your GP is always the right first step.

  • Adults aged 18 and over with occasional sleeplessness
  • People who prefer a traditional herbal remedy over antihistamine-based sleep aids
  • Those experiencing mild sleep disturbances related to stress or anxiety
  • Individuals looking for a one-tablet-per-night, straightforward dosing routine

 

How Does Nytol Herbal Compare to Nytol Original?

 

Feature Nytol Herbal One-A-Night Nytol Original (Diphenhydramine)
Active ingredient Valerian root dry extract 385 mg Diphenhydramine hydrochloride 25 mg
Product type Traditional Herbal Medicinal Product Licensed OTC medicine
Mechanism Herbal / GABA modulation (traditional use) Antihistamine with sedative effect
Suitable for Adults 18+ preferring herbal options Adults 16+ (not for long-term use)

 

Is Nytol Herbal One-A-Night Safe to Store and Use Long Term?

 

Store Nytol Herbal One-A-Night below 25°C in a dry place, away from direct sunlight and out of reach of children. Check the expiry date printed on the packaging before use — do not use the product after this date. As with any herbal sleep aid tablets, this product is intended for short-term use only. If you find yourself relying on it nightly for more than two weeks, it's worth speaking to your GP to rule out an underlying cause for your sleep difficulties. Poor sleep can sometimes be linked to conditions such as anxiety, depression, or sleep apnoea, all of which benefit from proper medical assessment. You might also find it helpful to explore our vitamins and supplements collection for complementary products that support overall wellbeing.

This product is a medicine. Speak to your doctor or pharmacist before using if you have an underlying medical condition or are taking other medicines.

Nytol Herbal One-A-Night 21 Tablets specifications
Treatment category Sleep disturbance / Occasional sleeplessness
Mechanism of action Traditional herbal — valerian root extract, possible GABA receptor modulation
Effective for Mild, occasional sleeplessness in adults
Suitable for Adults aged 18 and over
Active ingredient Valerian root dry extract 385 mg
Pack size 21 tablets
UK classification Traditional Herbal Medicinal Product (THMP)
Drug class Herbal sedative
Preparation Film-coated tablet
Route of administration Oral

Specifications of Nytol Herbal One-A-Night 21 Tablets

 

What Is Nytol Herbal One-A-Night and What Is It Used For?

 

Nytol Herbal One-A-Night is a Traditional Herbal Medicinal Product (THMP) registered with the MHRA. It contains valerian root dry extract as its active ingredient and is used to relieve temporary sleep disturbances and occasional sleeplessness in adults aged 18 and over. Its use is based on traditional evidence rather than clinical trial data, which is standard for THMP-registered products in the UK. It is not intended to treat chronic insomnia or sleep disorders with an identifiable medical cause.

Sleep problems are extremely common. The NHS notes that most people experience difficulty sleeping at some point, often triggered by stress, changes in routine, or environmental factors. Nytol Herbal One-A-Night is designed for those short-term, situational episodes — not as a long-term solution.

 

What Do You Need to Know Before Using Nytol Herbal One-A-Night?

 

Before taking this product, read the following carefully. Do not use Nytol Herbal One-A-Night if any of the contraindications below apply to you.

Do not use if you:

  • Are under 18 years of age
  • Are pregnant or breastfeeding
  • Are allergic to valerian or any other ingredient in the tablet
  • Have liver problems — valerian has rarely been associated with liver toxicity
  • Have a known sleep disorder requiring medical diagnosis or treatment

Possible drug interactions — tell your pharmacist if you are taking:

  • Prescription sedatives or hypnotics (e.g. benzodiazepines, zopiclone)
  • Anxiolytic medicines
  • Anticonvulsants
  • Alcohol — avoid during use, as it may increase drowsiness
  • Other herbal products with sedative properties (e.g. kava, passionflower)

If you are unsure whether this product is suitable for you, speak to your pharmacist before use. You should also be aware that this product may cause drowsiness — do not drive or operate heavy machinery after taking it.

 

How Should You Use Nytol Herbal One-A-Night?

 

Always use this product exactly as described. Do not exceed the stated dose. If you are unsure, ask your pharmacist for advice.

  1. Take one tablet approximately 30 minutes before you go to bed
  2. Swallow the tablet whole with a glass of water — do not crush or chew
  3. Do not take more than one tablet in any 24-hour period
  4. Use only at night — do not take during the day
  5. Do not use for more than two consecutive weeks without consulting a GP
Indication Age Group Dose Frequency
Occasional sleeplessness Adults 18+ 1 tablet (385 mg valerian extract) Once nightly, 30 minutes before bed
Under 18 years Children / adolescents Not suitable Do not use

 

What Are the Possible Side Effects of Nytol Herbal One-A-Night?

 

Like all medicines, Nytol Herbal One-A-Night can cause side effects, although not everyone experiences them. If you notice any side effect that concerns you, stop use and speak to your pharmacist or GP. You can also report side effects directly to the MHRA via the Yellow Card scheme.

Common side effects (may affect up to 1 in 10 people):

  • Gastrointestinal discomfort (e.g. nausea, stomach cramps)
  • Headache
  • Dizziness

Less common side effects:

  • Morning drowsiness or grogginess
  • Vivid dreams
  • Mild allergic skin reactions (rash, itching) — stop use immediately if this occurs

If you experience signs of a serious allergic reaction — such as swelling of the face, lips, or throat, or difficulty breathing — seek emergency medical help immediately. If you are also managing other health concerns, our pain relief collection and vitamins and supplements range may offer additional support for your overall wellbeing.

 

How Should You Store Nytol Herbal One-A-Night?

 

  • Store below 25°C in a dry place
  • Keep away from direct sunlight and moisture
  • Keep out of sight and reach of children
  • Do not use after the expiry date printed on the packaging
  • Do not dispose of medicines via wastewater or household waste — return unused tablets to your pharmacy

Written and reviewed by our qualified team

Your safety and success are our highest priorities. Our medical team rigorously evaluates every product and piece of advice we provide, ensuring you receive only the most effective, science-backed solutions available.

Frequently Asked Questions

Where can I buy Nytol Herbal One-A-Night tablets online in the UK?

You can buy Nytol Herbal One-A-Night 21 Tablets directly from Cured Pharmacy, a GPhC-registered UK online pharmacy. It is available without a prescription as an over-the-counter herbal medicine. Browse our full sleep aid collection for more options.

How do Nytol Herbal One-A-Night tablets work in the body?

Nytol Herbal One-A-Night contains valerian root dry extract, which is thought to interact with GABA receptors in the brain — helping to promote a calmer, more relaxed state that supports natural sleep onset. It is registered with the MHRA as a Traditional Herbal Medicinal Product, meaning its use is based on traditional evidence. Effects can be gradual, and some people notice improvement after several nights of consistent use.

How do I use Nytol Herbal One-A-Night step by step?

Take one tablet approximately 30 minutes before bedtime, swallowing it whole with a glass of water. Do not crush or chew the tablet, and do not take more than one tablet in any 24-hour period. Use only at night — this product is not intended for daytime use.

What is the best time to take Nytol Herbal One-A-Night?

The recommended time is approximately 30 minutes before you intend to go to sleep. Taking it too early in the evening may result in drowsiness before you are ready for bed. Consistency matters — taking it at the same time each night may help establish a better sleep routine.

What are the side effects of Nytol Herbal One-A-Night and how do I manage them?

Side effects are uncommon but can include gastrointestinal discomfort, headache, dizziness, or morning grogginess. If you experience any of these, they are usually mild and resolve on their own. If side effects persist or concern you, stop use and speak to your pharmacist or GP.

Who is eligible to take Nytol Herbal One-A-Night?

This product is suitable for adults aged 18 and over who experience occasional, temporary sleeplessness. It is not suitable for children or adolescents under 18, pregnant or breastfeeding women, or people with liver problems. Always check with your pharmacist if you are unsure whether it is right for you.

What happens if I miss a dose of Nytol Herbal One-A-Night?

If you forget to take your tablet before bed, simply skip that night's dose — do not double up the following night to compensate. This product is taken as needed rather than on a strict daily schedule, so missing one night will not affect your overall course. Resume normal use the following evening if needed.

Can I take Nytol Herbal One-A-Night if I am pregnant or breastfeeding?

No — Nytol Herbal One-A-Night is not recommended during pregnancy or breastfeeding. The safety of valerian in these situations has not been established, and you should speak to your GP or midwife before using any herbal sleep product. There may be safer alternatives your healthcare provider can suggest.

What are the alternatives to Nytol Herbal One-A-Night?

Alternatives include Nytol Original (diphenhydramine-based), other valerian-containing products, or non-medicinal approaches such as sleep hygiene improvements recommended by the NHS. You can explore our sleep aid collection to compare available options. Always speak to a pharmacist if you are unsure which product suits your needs.

How long can you take Nytol Herbal One-A-Night for?

Nytol Herbal One-A-Night is intended for short-term use only — typically no longer than two consecutive weeks. If your sleep problems continue beyond this period, you should consult your GP, as persistent insomnia may have an underlying cause that needs addressing. Relying on any sleep aid long-term without medical guidance is not recommended.

Can I drink alcohol while taking Nytol Herbal One-A-Night?

No — you should avoid alcohol while taking this product. Alcohol can enhance the sedative effects of valerian, potentially causing excessive drowsiness or impaired coordination. This combination could be dangerous, particularly if you need to drive or operate machinery the following morning.

Is Nytol Herbal One-A-Night suitable for people with anxiety?

Valerian has traditionally been used for both restlessness and mild anxiety, and some people with stress-related sleep difficulties find it helpful. However, if your anxiety is significant or ongoing, it is important to speak to your GP rather than relying on an over-the-counter herbal product. Nytol Herbal One-A-Night is not a treatment for anxiety disorders.

Does Nytol Herbal One-A-Night interact with other medicines?

Yes — valerian may interact with prescription sedatives, benzodiazepines, anticonvulsants, and other herbal products with sedative properties. Always tell your pharmacist about all medicines and supplements you are taking before starting this product. If you take regular prescription medication, check with your GP first.

What are the latest studies on valerian as a sleep aid?

Research into valerian's effectiveness is ongoing and results are mixed — some studies suggest modest benefits for sleep onset and quality, while others show no significant difference from placebo. As a THMP, Nytol Herbal One-A-Night is registered on the basis of traditional use rather than clinical trial evidence. Speak to your GP if you want evidence-based treatment options for persistent sleep problems.

Is Nytol Herbal One-A-Night vegan-friendly?

The tablet coating and excipients used in Nytol Herbal One-A-Night may not be suitable for all dietary preferences — check the product packaging or patient information leaflet for a full list of ingredients. If you follow a vegan lifestyle and want to explore other options, our vegan collection may be a helpful starting point. Always read the label carefully before purchase.

How Should You Use Nytol Herbal One-A-Night?

Using Nytol Herbal One-A-Night correctly gives you the best chance of a restful night. Always read the patient information leaflet supplied with the pack before you start, and follow the steps below carefully.

Swallow the tablet whole — do not crush, break, or chew it. Take it with a full glass of water to help it go down comfortably.

What Is the Correct Dose of Nytol Herbal One-A-Night?

The dose is straightforward — one tablet per night, taken 30 minutes before bed. There is no dose adjustment for older adults, but if you have any concerns about suitability, speak to your pharmacist before starting.

Do not exceed the stated dose under any circumstances. Taking more than one tablet will not improve sleep and may increase the risk of side effects.

When Is the Best Time to Use Nytol Herbal One-A-Night?

Take your tablet approximately 30 minutes before you plan to go to sleep. This timing allows the valerian extract to begin working as you settle down for the night. Avoid taking it earlier in the evening if you still need to be alert — for example, if you are driving, cooking, or caring for others.

Establishing a consistent bedtime routine alongside taking this product can make a real difference. The NHS recommends going to bed and waking at the same time each day as part of good sleep hygiene, and this product works best when used as part of that kind of structured approach.

How Long Can You Use Nytol Herbal One-A-Night For?

This product is intended for short-term use only — no longer than two consecutive weeks. If your sleep difficulties persist beyond this period, it is important to speak to your GP rather than continuing to self-treat. Ongoing sleeplessness can sometimes indicate an underlying condition such as anxiety, depression, or sleep apnoea, all of which require proper medical assessment.

Do not use this product as a permanent solution to sleep problems. If you find yourself reaching for it every night, that is a signal to seek professional advice about what might be causing your sleep difficulties.

Do not exceed the recommended dose. If in doubt, speak to your pharmacist.

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What Are the Most Common Side Effects of Nytol Herbal One-A-Night?

Most people who use Nytol Herbal One-A-Night do not experience significant side effects. However, as with any medicine, some people may notice unwanted effects, particularly when first starting the product. Common side effects tend to be mild and short-lived.

  • Gastrointestinal discomfort — including nausea, bloating, or stomach cramps
  • Headache
  • Dizziness

What Are the Less Common Side Effects of Nytol Herbal One-A-Night?

Less commonly, some people may experience effects that linger into the following morning or affect sleep quality in unexpected ways. These are not typical but are worth being aware of before you start.

  • Morning drowsiness or grogginess — sometimes called a "hangover" effect
  • Vivid or unusual dreams
  • Mild skin reactions such as rash or itching — stop use immediately if this occurs
  • Restlessness or excitability in some individuals (paradoxical reaction)

What Are the Serious Side Effects of Nytol Herbal One-A-Night?

Serious side effects are rare but possible. Valerian has been associated in rare cases with liver toxicity, particularly with prolonged or high-dose use. If you notice yellowing of the skin or eyes, dark urine, or persistent abdominal pain, stop use immediately and seek medical attention. Serious allergic reactions — including swelling of the face, lips, tongue, or throat, difficulty breathing, or a severe skin rash — require emergency medical help. Call 999 or go to your nearest A&E if you experience these symptoms.

What Should You Do If You Experience Side Effects of Nytol Herbal One-A-Night?

If you notice any side effect that concerns you, stop taking the product and speak to your pharmacist or GP. For mild effects such as nausea or headache, these often resolve without intervention. You can also report suspected side effects directly to the MHRA via the Yellow Card scheme at yellowcard.mhra.gov.uk — this helps improve medicine safety for everyone. Do not ignore side effects that persist or worsen.

Can Nytol Herbal One-A-Night Interact With Other Medicines?

Yes — valerian can interact with a number of medicines and substances. Always tell your pharmacist about everything you are taking before starting this product. Key interactions to be aware of include prescription sedatives and hypnotics (such as benzodiazepines or zopiclone), anticonvulsants, anxiolytics, and other herbal products with sedative properties. Alcohol should be avoided entirely during use, as it significantly increases the risk of excessive drowsiness and impaired coordination. If you are taking any regular prescription medication, check with your GP before using this product.

If you are concerned about any side effects, contact your pharmacist or GP immediately.

Patient Information Leaflet

Important - Before taking any medication, it is always important to read the Patient Information Leaflet (PIL)

Written and reviewed by our qualified team

GPhC Number: 2233073
Tarun Kumar

Reviewed by:

Tarun Kumar

Superintendent/ Clinical Lead

📖 Find out more about our team of medical content authors and how we ensure the accuracy of our content with our content guidelines.

Content last updated: 31 Mar 2025

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