Evidence-Based
The Science Behind Your Immune Age
Peer-reviewed research on how your immune system ages — and what accelerates or slows it
Inflammaging
Your immune system produces low-level inflammation that increases with age. Elevated IL-6 and CRP — measured in blood tests — are hallmarks of an immune system aging faster than your body. This "inflammaging" predicts infection risk, chronic disease, and recovery time.
Franceschi et al., 2000, Annals of the New York Academy of Sciences
Thymic Decline
Your thymus — the organ that trains new immune cells — shrinks with age, reducing thymic output by ~95% between ages 20 and 60. Active adults maintain thymic function comparable to people 20–30 years younger, preserving the supply of naive T-cells that fight new infections.
Duggal et al., 2018, Aging Cell
Sleep & Immunity
Adults sleeping less than 6 hours are 4.2× more likely to catch a cold when exposed to rhinovirus — demonstrated in an experimental infection study. Sleep is when your immune system produces infection-fighting cytokines and consolidates immunological memory.
Prather et al., 2015, Sleep
IV Nutrient Science
IV Vitamin C at 15,000mg achieves plasma concentrations 30–70× higher than any oral dose. Vitamin C accumulates in immune cells at 10–100× plasma levels. Zinc activates thymulin — the thymic hormone — and reduced infections by 66% in zinc-deficient elderly in a clinical trial.
Padayatty et al., 2004; Barnett et al., 2016
All claims are supported by peer-reviewed research cited above. This is educational content, not medical advice.
Average difference in sick days per year between adults with younger vs older immune ages
“The Immunity Mega Boost is our most-prescribed intervention for inflammaging. See where your immune age lands before you book.”See my immune age
How The Scan Works
From Scan To Drip Match In 2 Minutes
Before you book, see your biological age. The report tells you which IV protocol is the right fit — so you're not paying for a drip you don't need.
1. Scan
Answer 8 questions in 2 minutes. No cameras, no blood, no labs.
2. Report
Get your biological age score plus a breakdown by body system — skin, immune, cellular, metabolic.
3. Drip match
Your report recommends the exact IV protocol matched to your scores. Book the consultation with the report in hand.
What's in Your Immunity IV Drip?
Every Immunity IV infusion contains evidence-based immune nutrients at therapeutic doses — with Vitamin B12, Vitamin D, and Iron IV available as add-ons.
Immune Powerhouse
Vitamin C (15g)
C₆H₈O₆
Powerful antioxidant crucial for white blood cell production and function — delivered at 15 grams, a dose oral tablets physically can't match due to gut absorption limits.
Bio-age Marker
Reduces circulating inflammaging markers in controlled studies.
Stay Resilient
Key Benefits of Our London Immunity IV Drip
Designed to support your body's natural barriers and cellular defences.
Fewer Sick Days
- Fewer sick days — adults with younger immune ages report 2× fewer per year.*
- Reduced frequency of seasonal viral illness post-series.*
- Lower rate of secondary infections in high-exposure households.*
- Shorter average illness duration in the 12 months post-course.*
Faster Recovery
- Faster recovery — inflammation clearance is the bottleneck.*
- Oxidative-stress markers drop in line with a younger immune age.*
- Return-to-baseline energy measured in days, not weeks.*
- Reduced post-viral fatigue — a key inflammaging signal.*
Stronger Rebound
- Stronger post-viral rebound — especially after long antibiotic or viral courses.*
- Convalescent repletion of Vitamin C, Zinc, B12 at therapeutic doses.*
- T-cell function supported by direct Zinc and Glutathione delivery.*
- Resilience through travel, flu-season, and high-exposure windows.*
*Representative outcomes based on anonymised patient data; individual results vary.
Is an Immunity IV Drip Right For You?
Three immune-age profiles that see the biggest change from the Immunity Mega Boost.
Frequent illness
Your immune system is aging faster than you are. Catching infections repeatedly, slow recovery, run-down energy — classic inflammaging signs. The Mega Boost directly targets the markers driving this.
What this IV reverses
- Reduces circulating inflammation markers
- Supports T-cell maturation and activity
- Restores intracellular Vitamin C levels
- Fewer sick days per year — clinically observed
Immunity IV vs Oral Supplements
Immunity IV Drip vs Vitamin C Tablets & Oral Supplements
Oral Vitamin C, Zinc, B12, and Iron supplements are capped by gut absorption. IV bypasses that bottleneck entirely.
“The Immunity IV isn't a stronger vitamin tablet — it's a completely different delivery route, achieving doses oral supplements physically cannot.”
Bespoke Immunity IV Protocol
From Scan to Visible Results in 4 Steps
A physician-led protocol — not a one-size-fits-all vitamin bag.
Scan
2-minute immune age assessment. No cameras, no labs.
Report
Your immune age score plus inflammation markers and drip-match recommendation.
Consultation
Our GMC-registered doctor reviews your report and tailors the Mega Boost protocol.
Drip session
Administered in clinic by a specialist nurse. Sessions ~45 minutes.
Transparent Immunity IV Pricing
How Much Does an Immunity IV Drip Cost in London?
Three pricing tiers. All include a free consultation with our GMC-registered doctors.
Single Session
Includes free biological age report (£149 value)
45–60 mins
Perfect for first-timers or an occasional boost
- High-Dose Vitamin C (15g)
- Zinc & B-Complex
- Glutathione Boost
- GMC-Registered Doctor
- Comfortable private room
Immunity Pack
Includes free biological age report (£149 value)
3 Sessions
Best value for ongoing protection or flu-season prep
- Everything in Single Session
- 3 sessions (save £126)
- Priority booking
- Results in 24–48 hours
- Perfect for flu season
Annual Shield
Includes free biological age report (£149 value)
12 Sessions
Year-round monthly immunity protection
- Everything in Immunity Pack
- Monthly sessions (save £750)
- Dedicated wellness advisor
- Free health check-ups
- VIP scheduling
Prices include VAT. Klarna, Clearpay and Ideal Finance (interest free up to £1,000) available for courses.
Immunity IV Results — Real Patient Outcomes
Every case is unique. These are real patient outcomes from our clinics.
Marcus · 42
Busy parent · 2 young children · 8 months of constant low-grade illness
Immune Age
Years Recovered
Clinical Protocol
- Immunity Mega Boost × 4 sessions over 4 weeks (Vitamin C 15g + Zinc + Glutathione)
- B12 IV boost on alternating weeks
- Vitamin D IV loading dose in session 1
- Re-scan at week 5 to reassess immune age
Outcome
By session 2, energy was 'back to his 20s'. Re-scan at week 5 put immune age at 44 — within two years of chronological. Now on monthly maintenance.
"Watching my immune age drop from 51 to 44 on the re-scan was the single best proof point. I wasn't just feeling better — the number moved."
— Marcus, 42 — Immunity Mega Boost Patient
What Immunity IV Patients Say
Real patients. Verified on Google. Read what they had to say.
“Back to feeling like myself.”
After a nasty flu in January I just couldn't shake the tiredness. Three Immunity IV sessions and I felt normal again within two weeks. The team was brilliant — everything explained, no pressure.
Flexible Payments
Invest in Yourself
Achieving your wellness goals shouldn't be a financial burden. We offer seamless payment options tailored to your lifestyle.
Pay in 3
Spread the cost over 3 interest-free instalments. No fees, no interest.
Pay in 4
4 equal payments, due every 2 weeks. Always interest-free.
Loans over £500
Interest free up to £1,000. Flexible medical loans with fast decisions.
Wellness Experts
Meet Your Harley Street Immunity IV Doctors
Immunity IV drip, B12 injection, Vitamin D IV, and Iron infusion protocols are administered exclusively by GMC-registered doctors.

Dr. Ahmad
Medical Director
GMC Registered · Aesthetic & Regenerative Medicine
Dr. Ahmad is the founder and Medical Director of Harley Street Wellness. With extensive experience in aesthetic and regenerative medicine, he leads our team in delivering exceptional patient care and innovative treatment protocols.

Dr. Humaira Faisal
Wellness Physician
GMC Registered · Metabolic Health & Integrative Medicine
Dr. Humaira specialises in metabolic health and personalised wellness programmes. Her integrative approach combines conventional medicine with nutritional and lifestyle interventions for optimal patient outcomes.

Dr. Ayda Soltanzadeh
Wellness Consultant
GMC Registered · Wellness & Vitality Optimisation
Dr. Ayda Soltanzadeh is a Wellness Consultant with several years of experience in optimizing patient health and vitality through personalized wellness strategies.

Dr. Mazhar Khan
Wellness Consultant
GMC Registered · 23 Years Clinical Experience
Dr. Khan is a Wellness Consultant with 23 years of clinical expertise, dedicated to delivering comprehensive and personalized care to his patients.
Established Clinical Standards
A Dedicated Vitamin IV, B12 & Iron Infusion Clinic
Harley Street Wellness is a dedicated Immunity IV drip clinic. Our physician-led Vitamin C, Zinc, B-Complex, B12 injection, Vitamin D IV, and private iron infusion protocols are delivered by GMC-registered doctors across our London and Glasgow clinics.
Immunity IV FAQs
Immunity IV Drip London FAQs — Cost, Near Me, B12, Iron Infusion
Everything you need to know about Immunity IV therapy, Vitamin B12 injection, Vitamin D IV, and private iron infusion at our London and Glasgow clinics.
A single Immunity IV Drip is £375. The Immunity Pack (3 sessions) is £999 — our best value, saving £126. The Annual Shield (12 monthly sessions) is £3750, saving £750. All prices include a free consultation with a GMC-registered doctor. Klarna, Clearpay, and medical financing are available.
We have clinics in London (Harley Street W1G and Chancery Lane EC1N) and Glasgow (City Centre G1). Complete the free assessment and we'll match you to the nearest available clinic based on your postcode.
Yes — for therapeutic-level immune support. Your gut caps Vitamin C absorption at around 200–400 mg per oral dose regardless of how much you take. Our IV delivers 15,000 mg directly into the bloodstream — serum concentrations that oral supplements physically cannot achieve. The same absorption ceiling applies to iron and B12 tablets.
Our core Immunity IV contains high-dose Vitamin C (15g), Zinc, Glutathione (the 'master antioxidant'), and a B-Complex. Your doctor can add Vitamin B12, Vitamin D, or Iron to the protocol if clinically indicated.
Most patients report feeling more energised within 24–48 hours. For active illness recovery, a single high-dose session often noticeably shortens the illness duration. For prevention, we recommend timing a course to flu-season onset or pre-travel.
Yes. We offer B12 injections and Vitamin D IV loading as standalone treatments or as add-ons to an Immunity IV. B12 injection is particularly effective for diagnosed B12 deficiency where oral tablets aren't correcting your levels.
Yes. We offer private iron infusions for confirmed iron deficiency where oral iron has caused side effects or hasn't raised ferritin levels adequately. Iron IV is assessed individually — your doctor reviews recent bloods before agreeing to proceed.
Yes. All sessions are delivered by GMC-registered doctors under continuous monitoring in a sterile clinical environment. The most common experience is a cool sensation at the IV site and a mild mineral taste during infusion. Your full medical history is reviewed before any treatment is recommended.
No — no treatment can guarantee that. What our Immunity IV does is give your immune cells the raw materials they need to respond faster and harder when challenged. Patients on regular courses consistently report fewer illnesses and faster recovery when they do get ill.
A typical Immunity IV session is 45–60 minutes in a private treatment room. You can read, work on your laptop, or simply relax during the infusion.
Depends on your goals. For active recovery: 1 session as needed. For flu-season protection: 3 sessions across 6 weeks (Immunity Pack). For high-exposure lifestyles: monthly maintenance (Annual Shield). Your doctor will recommend the right cadence at your free assessment.
We deliberately do not offer at-home Immunity IV. A private clinical setting is safer (monitoring, reaction management, sterile environment) and allows us to deliver therapeutic doses that wouldn't be advisable in a home setting.
Your biological age score, a breakdown by body system (skin, immune, cellular, metabolic), and a specific IV-protocol recommendation.
It's based on validated survey instruments our clinical team adapted from peer-reviewed biological-age research. It's a screen, not a diagnostic blood test — but it's the starting point every patient at our clinic goes through.
No. The scan and the report are free, regardless of whether you book a drip afterwards.
No. The report is yours to keep. Most patients use it to decide whether the drip they were considering is actually the right fit.
Clinic Locations
Visit Our Clinics
Three UK locations across London and Glasgow — our team will match you to the nearest clinic after your free assessment.

Harley Street
10 Harley Street, London W1G 9PF

Chancery Lane
London Medical Rooms, Ground Floor, 1–5 Portpool Lane, London EC1N 7UU

Glasgow Day Surgery Centre
154 Clyde Street, Glasgow G1 4EX
GMC-registered doctors · London & Glasgow · No obligation
The information on this page is provided for educational and informational purposes only and does not constitute medical advice. Individual results may vary. All consultations and treatments are carried out by GMC-registered doctors at our clinics.
© 2026 Harley Street Wellness. All rights reserved.

