England · Fentanyl Addiction

Fentanyl Addiction Help in City of London

Q: How dangerous is fentanyl?

Fentanyl is 50–100 times more potent than morphine and 50 times more potent than heroin. A dose of just 2 milligrams (invisible to the naked eye) can be lethal. Illicit fentanyl is increasingly found in street drugs in the UK — including pressed pills and powders sold as other drugs — making every use potentially fatal.

Q: Is there naloxone for fentanyl overdose?

Yes, but multiple doses may be required. Standard naloxone doses reverse fentanyl overdose but due to fentanyl's extreme potency, multiple doses or a continuous naloxone infusion via IV (in hospital) may be needed. Anyone who uses opioids in the UK should carry naloxone — available free from needle exchanges and many pharmacies.

Q: How do I get fentanyl addiction help in City of London?

This is urgent. NHS drug treatment services in City of London treat fentanyl dependency with high-dose methadone or buprenorphine. Call Frank immediately on 0300 123 6600 (free, 24/7) to be directed to your nearest service. If someone has used fentanyl and is unresponsive or breathing very slowly — call 999 immediately.

Fentanyl is 50–100 times more potent than morphine and carries an extreme overdose risk. Fentanyl addiction treatment is available in City of London through the NHS. If someone has overdosed on fentanyl, call 999 immediately and administer Naloxone if available. Call Frank on 0300 123 6600 (24/7) for urgent fentanyl addiction help in City of London.

✓ 3 CQC-registered services in City of London

✅Medically reviewed April 2026 · Based on NICE guidelines and NHS clinical frameworks · Editorial policy

Local NHS service: fentanyl addiction treatment in City of London is commissioned by your local NHS Integrated Care Board (ICB). Find local services →

Need help now? Call Frank free on 0300 123 6600 — confidential, available 24/7

Rehab & addiction centres in City of London

3 CQC-registered services in City of London.

Health Now Ltd

Community · Private · 4th Floor

Verified

Add your centre

Missing from our directory? Get verified and receive direct enquiries — £25/month

Get verified →

View all 3 centres →

Can't find what you need?

Frank's NHS service finder covers every drug & alcohol service in the UK.

Frank service finder →

Signs of fentanyl addiction

Fentanyl addiction can develop gradually. Common signs include:

• Using fentanyl patches in ways other than prescribed (chewing, extracting gel)
• Using illicit fentanyl (increasingly found in street drugs in the UK)
• Needing fentanyl to prevent severe withdrawal
• Criminal activity to obtain fentanyl or money to buy it
• Extremely pinpoint pupils, frequent nodding off, slow breathing
• History of opioid use disorder escalating to fentanyl

Fentanyl withdrawal symptoms

Withdrawal from fentanyl should always be managed with medical support. Symptoms include:

• Extremely intense opioid withdrawal due to high potency
• Severe muscle cramps, sweating, vomiting, and diarrhoea
• Intense anxiety and agitation
• Rapid heart rate and elevated blood pressure
• Strong cravings
• Medical supervision is essential — fentanyl dependency is extremely difficult to manage without medication

Treatment for fentanyl addiction in City of London

✓ Medically supervised detox — essential for fentanyl dependency
✓ High-dose methadone or buprenorphine to manage withdrawal
✓ Naloxone (Narcan) — must be carried by anyone using fentanyl. Free from needle exchanges.
✓ Residential rehabilitation
✓ Long-term MAT (Medication-Assisted Treatment)
✓ NHS specialist drug services

More help in City of London

Rehab in City of London Drug treatment in City of London Opioid substitution in City of London Drug counselling in City of London What is methadone?All addiction help in City of London

Frequently asked questions about fentanyl addiction in City of London

How dangerous is fentanyl?

Is there naloxone for fentanyl overdose?

How do I get fentanyl addiction help in City of London?