Nervous patients & sedation in Rugby · the honest guide
How long does dental sedation last? Your day, hour by hour
Written by Dr Savan Zala, implant and sedation dentist at Rugby Smiles (BDS, MFGDP RCSEng, MSc Implants) · Reviewed September 2026
The short answer: the deep, relaxed part of IV sedation lasts as long as we need it to, typically 45 to 90 minutes, and the drowsiness fades over the next few hours. But the rules last a full 24 hours: no driving, no work, no alcohol and no important decisions until the next day, because your judgement and reactions are affected long after you feel fine.
People plan sedation around two questions: how long will I be out of action, and what can I not do afterwards. Here is the whole day laid out, from what to eat that morning to when you can pick up the car keys again, plus the reasons behind each rule, which makes them easier to follow.
Not ready to speak to anyone yet? Tell us what worries you first, it takes two minutes and Georgia reads every one.
Before you arrive
The UK sedation standards say eating and drinking advice should be tailored to you and given in writing, so you will have exact instructions from your consultation. For most healthy adults that means a light meal a few hours before rather than a full fast, and nothing but water in the last two hours. No alcohol for 24 hours beforehand, take your normal medicines unless we have told you otherwise, and wear something comfortable with sleeves that roll up.
You will need a responsible adult to bring you, wait or come back for you, take you home by car or taxi rather than public transport, and stay with you for the rest of the day. This is not optional and not a formality; it is a condition of being sedated anywhere in the UK, and it protects you.
The appointment itself
Minutes 0 to 10
Checks, consent confirmed, monitors on, cannula in. The first dose goes in and within a couple of minutes the anxiety starts to lift. We add small amounts until you are relaxed but still responding.
Treatment, 45 to 90 minutes
This is the working window. Because you are calm and time feels compressed, we can often do a lot: a deep clean and several fillings, an extraction or two, or implant placement. Longer sessions are possible with top-up doses.
Recovery, 30 to 60 minutes
Treatment finishes and the drug is already wearing off. You rest in the chair or our recovery area while the monitors stay on, until you are steady, talking sensibly and meet the discharge checks. Then your escort takes over.
The rest of the day
Midazolam has a short half-life, so the obvious drowsiness fades within two to four hours. The catch is that the subtle effects on memory, coordination and judgement last much longer than the sleepy feeling, and you are a poor judge of your own state while under them. That is why every rule runs to 24 hours rather than until you feel normal.
- Go straight home and take it easy; sofa, films, an early night
- Eat when you feel like it, starting with something light
- Someone stays with you overnight, or at least for the rest of the day and evening
- No driving, cycling, operating machinery or cooking on the hob
- No alcohol, no sleeping tablets, no recreational drugs
- No work emails, contracts, online shopping or anything you might regret; your judgement is not yours today
- No looking after small children or dependants on your own
The next morning
By 24 hours after the sedation you can drive, work and get on with life. Most people feel completely normal the evening before that, which is exactly when the rules matter most. If you still feel groggy, dizzy or sick the next day, or if anything about the treatment site worries you, call us on 01788 579 577. It is rare, but we want to hear about it.
Why the 24-hour rule is not us being cautious
Studies of driving and reaction times after midazolam show measurable impairment for many hours after people report feeling fine. Insurance will not cover you if you drive after sedation. And the amnesia means you may not remember instructions given to you at the practice, which is why they are written down and why your escort is briefed too. The rule exists because the drug is very good at making you feel fine before you are.
“If you feel normal at teatime, that is the sedation working, not the sedation gone.”
Dr Savan Zala, sedation dentist at Rugby Smiles
Planning it around work and family
Book a morning slot if you can, so recovery happens in daylight and you have a full quiet day. Take that day off work; the next day is usually fine. Arrange childcare rather than relying on yourself. If you are travelling from Coventry, Leamington or further afield, the drive home is part of the escort’s job, so pick someone who is happy to do it. The whole picture of how IV sedation works at Rugby Smiles, including the £500 session price, is on the sedation page.
Questions people ask
When can I drive after dental sedation?
Not until 24 hours after the sedation. Reaction times are affected long after you feel normal, and your insurance would not cover you.
When can I go back to work?
The next day. Take the day of the sedation off completely, including working from home; your concentration and memory will not be reliable.
Can I eat before IV sedation?
Follow the written instructions from your consultation. As a rule, most adults are asked to have a light meal a few hours beforehand and nothing but water in the last two hours, rather than a complete fast.
When can I drink alcohol?
Not for 24 hours before or after. Alcohol and midazolam amplify each other, which is unpleasant at best and unsafe at worst.
Do I need someone to stay overnight?
Someone must take you home and stay with you for the rest of the day. Overnight is strongly advised, especially if you live alone or had a long session.
Will I feel sick afterwards?
Nausea is uncommon with midazolam. A drowsy afternoon and patchy memory of the day are the usual after-effects, and both are gone by the next morning.
One quiet day. Years of avoided dentistry, done.
The free consultation is a conversation, not a treatment: your medical history, what you need done, whether sedation is right for you, and a written price before anything is booked. Or start with a free, no-chair chat with Georgia, our treatment co-ordinator.
Read next: what sedation feels like · is it safe? · what it costs · IV sedation in Rugby · Rugby Smiles Dental Clinic · 3 Newbold Road, Rugby CV21 2LQ · 01788 579 577