Last updated by the vFlow team.
What are the risks of an IV drip?
Any treatment that goes into a vein carries some risk. Most problems are minor, but a few can be serious, which is why screening and clinical oversight matter.
- Bruising, soreness or swelling where the cannula goes in.
- Vein irritation or inflammation (phlebitis).
- Fluid leaking into the surrounding tissue if the cannula moves.
- Infection, which is rare when sterile, single-use equipment is used.
- Feeling faint or light-headed during or after the drip.
- Allergic reactions to an ingredient, which in rare cases can be severe (anaphylaxis).
- Fluid overload, a particular concern for people with heart or kidney problems.
- Vitamin or mineral toxicity if doses are too high or repeated too often. For example, too much vitamin B6 over time can damage nerves.
- Kidney problems with high-dose vitamin C, including a higher risk of kidney stones. In people with G6PD deficiency, high-dose vitamin C can cause red blood cells to break down (haemolysis).
Who should not have an IV drip?
An IV drip is not suitable for everyone. You should not have one, or should only have one after specific medical advice, if any of these apply:
- You are pregnant or breastfeeding, unless your doctor or midwife has advised it.
- You have a heart condition, such as heart failure.
- You have kidney disease or reduced kidney function.
- You have G6PD deficiency (relevant to high-dose vitamin C).
- You take certain medicines, including blood thinners, or have known allergies to any ingredient.
- You are under 18.
What should a safe IV drip provider do?
Most injectable vitamins and minerals are prescription-only medicines in the UK, so a prescriber should be involved. A careful provider will:
- Ask you to complete a health screening before your appointment.
- Have a qualified clinician assess whether the treatment is suitable for you.
- Have a prescriber (a doctor, or a nurse or pharmacist prescriber) responsible for the medicines used.
- Use sterile, single-use equipment and prepare the drip hygienically.
- Take observations such as pulse and blood pressure, and watch you during the drip.
- Explain the risks and get your informed consent before starting.
- Be trained and equipped to deal with an allergic reaction.
- Give you aftercare advice and a way to get in touch afterwards.
How does vFlow approach IV drip safety?
Every vFlow treatment starts with a health screening. Our clinical team reviews your answers before your appointment, and your practitioner completes final checks and consent on the day before anything is prepared. Treatments are given with sterile, single-use equipment.
We may decline treatment if our clinician decides it is not suitable for you, and if that happens your deposit is refunded in full. Our treatments are for adults aged 18 or over, and you need to give accurate health information so we can assess you properly.
How can I check an IV drip provider?
A few quick checks before you book can help you avoid unsafe providers.
- Search the Care Quality Commission (CQC) website to see whether the provider is registered and read any inspection reports.
- Check the practitioner is on the right professional register: the NMC for nurses, the GMC for doctors or the GPhC for pharmacists.
- Ask who prescribes the medicines and whether they will assess you.
- Red flag: no health questions before treatment.
- Red flag: a salon or pop-up with no prescriber involved.
- Red flag: glutathione drips marketed for skin whitening or lightening, which Trading Standards has warned about.
- Red flag: claims that a drip cures, treats or prevents illness.
What does the evidence say about IV vitamin drips?
It is fair to be sceptical. In 2019, NHS England warned against IV vitamin "party drips", pointing out that most people get what they need from a balanced diet. In December 2025, Which? reported that IV vitamin drips are a waste of money for most healthy people, citing limited evidence.
In 2025, the Chartered Trading Standards Institute issued a public warning about dangerous glutathione skin-whitening drips.
We agree that the evidence for benefits in healthy people is limited. That is why vFlow describes what is in each drip and how it is given, rather than making health claims, and why screening comes first.
Frequently asked questions
Are IV drips safe?
IV drips are generally low risk when a qualified, regulated provider screens you first and uses sterile technique, but they are not risk-free. Risks include bruising, vein irritation, infection, allergic reactions, fluid overload and vitamin toxicity.
Can I have an IV drip if I am pregnant or breastfeeding?
Not unless your doctor or midwife has specifically advised it. Wellness IV drips are not recommended during pregnancy or breastfeeding.
Are IV vitamin drips regulated in the UK?
The medicines used are regulated, and most injectable vitamins are prescription-only. Practitioners should be on a professional register such as the NMC, GMC or GPhC, many providers need to be registered with the CQC, and advertising must follow ASA rules.
Is a glutathione skin-whitening drip safe?
In 2025 the Chartered Trading Standards Institute warned the public about dangerous glutathione skin-whitening drips. Avoid any provider that markets drips for skin whitening or lightening.
Do I need a consultation before an IV drip?
Yes. A responsible provider will ask you to complete a health screening and have a clinician check you are suitable before any treatment is prepared.
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Ready to book?
Every vFlow treatment starts with a health screening and a suitability check. You pay a deposit to book, and it is refunded in full if a treatment is not suitable for you.
This guide is general information, not medical advice. Clinical content review pending.