1. How long does Nytol Herbal One-A-Night take to work?
Nytol Herbal One-A-Night tablets are typically taken about one hour before bedtime. The effects may vary, but they are designed to help you relax and prepare for sleep naturally.
What is Nytol Herbal One-A-Night?
Nytol Herbal One-A-Night is a traditional herbal remedy used to treat temporary, short-term sleep disturbances. The active ingredient in Nytol Herbal One-A-Night is valerian root extract (385mg).
Valerian is a herbal ingredient traditionally used to promote relaxation and support sleep.
Who is Nytol Herbal One-A-Night suitable for?
This medication may be suitable for adults who are experiencing short-term sleep disturbances caused by:
However, if your sleep does not improve, you must contact your GP to identify the underlying cause.
Do not take this medication if you are allergic to valerian root extract or any of the ingredients.
This medication is not suitable if you are:
- Under 18
- Already taking medication for sleep or anxiety
- Pregnant or breastfeeding
How to take Nytol Herbal One-A-Night
You should always take this medication as advised by your GP or pharmacist, and always refer to the patient information leaflet.
Adults and the elderly:
Take ONE tablet one hour before bedtime. If needed, an additional tablet can be taken earlier in the evening.
Children under 18
Not recommended for this age group.
Important advice:
- Do not take more than the recommended dose
- If you take more than you should, contact your GP or pharmacist immediately
How to store Nytol Herbal One-A-Night
- Store in a cool, dry place
- Keep below 25°C
- Keep away from direct sunlight
- Keep out of sight and reach of children
- Do not use after the expiry date on the packaging
Nytol Herbal One-A-Night can cause side effects, although not everyone will experience them.
The most commonly reported side effect is:
A rare but important side effect to look out for is an allergic reaction.
Symptoms of an allergic reaction include:
- Swelling of the face, mouth, tongue, or lips
- A rash
- Hives
If you think you may be having an allergic reaction, stop taking this medication and seek medical attention immediately.
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Frequently Asked Questions
2. Can I take Nytol Herbal One-A-Night every night?
This product is intended for short-term use to relieve temporary sleep disturbances. If your sleep problems persist, you should speak to a healthcare professional.
3. Does Nytol Herbal One-A-Night cause drowsiness the next day?
Nytol Herbal contains valerian root, which is generally less likely to cause next-day drowsiness compared to some traditional sleep aids. However, effects can vary between individuals.
Our Clinical Authors
This page has been written by a registered UK pharmacist and reviewed by our clinical team to ensure it is accurate, clear and reflects current clinical guidance.
Last medically reviewed: 06 July 2026
Last updated: 06 July 2026