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Starting Mounjaro
Your guide to 2.5mg — the first 4 weeks
The 2.5mg dose is your introduction to tirzepatide. This starting phase typically lasts 4 weeks and is designed to help your body adjust before escalating. Most patients experience mild side effects that subside within the first two weeks.
What to expect
Nausea and reduced appetite are common in the first 1–2 weeks. Eating smaller meals and staying hydrated helps. Most side effects are temporary as your body adjusts to the medication.
Getting your prescription
All pharmacies listed require a valid prescription. Most offer online consultations — some include this free of charge. Your prescriber will confirm 2.5mg is the right starting dose for you.
Saving on your first order
Several pharmacies offer first-order discounts and discount codes. Check for codes like FIRST20 or SAVE10 below. Some also waive the consultation fee on your initial order.
Quick tips
- Inject on the same day each week for consistency
- Store your pen in the fridge (2–8°C) until use
- Rotate injection sites: abdomen, thigh, or upper arm
- Don't skip the 2.5mg phase — it reduces side effects later
Best prices for this stage
Sorted by total cost including consultation fees.
1
SN
Second Nature
Best price4.5 (11,000)1-3d · Free
£99.00/tablet
1 pre-filled pen
Free consultationFree deliveryGPhC registered
2
TF
The Family Chemist
1-3d · Free
Free consultationFree deliveryDiscount availableGPhC registered
£139.99/tablet
1 pre-filled pen
Code 15% off first order for 15% off
3
SD
Slimming Direct
1-3d · Free
Free consultationFree deliveryGPhC registered
£125.00
Total: £125.00
4
UK Meds
4.51-3d · Free
Free consultationFree deliveryDiscount availableGPhC registered
£157.99
Total: £157.99
Code REFER for 20% off
5
Oxford Online Pharmacy
4.71-3d · Free
Free consultationFree deliveryDiscount availableGPhC registered
£149.99
Total: £149.99
Code NEWSLETTER10 for 10% off
6
PE
Pharmazon Express
1-3d · Free
Free consultationFree deliveryGPhC registered
£135.00
Total: £135.00
7
CH
Cuva Health
1-3d · Free
Free consultationFree deliveryDiscount availableGPhC registered
£135.99
Total: £135.99
Code LIVE9 for % off
8
WE
Weightless
1-3d · Free
Free consultationFree deliveryDiscount availableGPhC registered
£160.00
Total: £160.00
Code GUIDED_PLAN for 15% off
9
MM
Medicine Marketplace
1-3d · Free
Free consultationFree deliveryGPhC registered
£137.00
Total: £137.00
10
PO
Pharmacy Online
4.51-3d · Free
Free consultationFree deliveryDiscount availableGPhC registered
£145.00/tablet
2 Month Starter Pack - 2.5mg + 5mg
Code EASTER5 for 5% off
11
CU
Curely
4.71-3d · Free
Free consultationFree deliveryGPhC registered
£139.59/tablet
1 pre-filled pen
12
HP
Happy Pharmacy
1-3d · Free
Free consultationFree deliveryGPhC registered
£139.99
Total: £139.99
13
NO
NowPatient
1-3d
Free consultationDelivery: £12GPhC registered
£139.99
Total: £139.99
14
PI
PillTime
1-3d · Free
Free consultationFree deliveryDiscount availableGPhC registered
£139.99
Total: £139.99
Code NY60 for % off
15
AP
Ashcroft Pharmacy
4.81-3d · Free
Free consultationFree deliveryDiscount availableGPhC registered
£140.00
Total: £140.00
Code SPRING15 for % off
16
Pharmica
4.91-3d · Free
Free consultationFree deliveryDiscount availableGPhC registered
£159.99
Total: £159.99
Code SUBSCRIBE10 for 10% off
17
LW
Live Well Weight Loss
1-3d · Free
Free consultationFree deliveryGPhC registered
£144.00
Total: £144.00
18
CP
Cured Pharmacy
3.81-3d · Free
Free consultationFree deliveryDiscount availableGPhC registered
£145.00
Total: £145.00
Code REFER15 for % off
19
DW
Dr Weightmans
1-3d · Free
Free consultationFree deliveryGPhC registered
£145.00/tablet
1 pen
20
FA
Farmeci
4.61-3d · Free
Free consultationFree deliveryGPhC registered
£145.00/tablet
1 pre-filled pen
21
My London Pharmacy
1-3d · Free
Free consultationFree deliveryGPhC registered
£145.00/tablet
1 pen
22
CL
Click2Pharmacy
1-3d · Free
Free consultationFree deliveryGPhC registered
£145.99
Total: £145.99
23
PI
Pills2U
1-3d · Free
Free consultationFree deliveryGPhC registered
£145.99
Total: £145.99
24
LW
Lotus Weight Loss
1-3d · Free
Free consultationFree deliveryDiscount availableGPhC registered
£155.00
Total: £155.00
Code LOYALTY_5PCT for 5% off
25
Chemist4U
4.81-3d · Free
Free consultationFree deliveryGPhC registered
£148.00
Total: £148.00
26
RA
Right Angled
4.11-3d · Free
Free consultationFree deliveryDiscount availableGPhC registered
£164.99/tablet
1 pre-filled pen
Code SAVE 10% for 10% off
27
Medicspot
4.41-3d · Free
Free consultationFree deliveryGPhC registered
£149.00/tablet
1 pre-filled pen
28
PC
Phlo Clinic
4.71-3d · Free
Free consultationFree deliveryGPhC registered
£149.00/tablet
1 pre-filled pen
29
WP
Well Pharmacy
4.31-3d · Free
Free consultationFree deliveryGPhC registered
£149.00
Total: £149.00
30
E-
E-Surgery
4.41-3d · Free
Free consultationFree deliveryDiscount availableGPhC registered
£149.95
Total: £149.95
Code NEWPT30 for % off
31
SP
Superior Pharmacy
1-3d · Free
Free consultationFree deliveryGPhC registered
£149.99
Total: £149.99
32
heySlim
4.51-3d · Free
Free consultationFree deliveryGPhC registered
£154.00/tablet
1 pre-filled pen
33
PR
PrivateDoc
4.81-3d · Free
Free consultationFree deliveryGPhC registered
£157.00
Total: £157.00
34
Bolt Pharmacy
4.41-3d · Free
Free consultationFree deliveryDiscount availableGPhC registered
£159.00/tablet
1 pre-filled pen
Code Subscribe & Save for % off
35
CH
CheqUp
4.21-3d · Free
Free consultationFree deliveryGPhC registered
£159.00
Total: £159.00
36
Boots Online Doctor
4.41-3d · Free
Free consultationFree deliveryDiscount availableGPhC registered
£176.97
Total: £176.97
Code WELCOME10 for 10% off
37
WePrescribe
4.91-3d
Free consultationDelivery: £6.5GPhC registered
£159.99
Total: £159.99
38
WH
West Hill Pharmacy
1-3d · Free
Free consultationFree deliveryGPhC registered
£159.99
Total: £159.99
39
PO
PostMyMeds
1-3d · Free
Free consultationFree deliveryDiscount availableGPhC registered
£174.99/tablet
1 pre-filled pen
Code Promo5 for 5% off
40
MC
Morrisons Clinic
2.11-3d · Free
Free consultationFree deliveryGPhC registered
£169.00/tablet
1 pre-filled pen
41
MY
myBMI
4.31-3d · Free
Free consultationFree deliveryGPhC registered
£169.00/tablet
1 pre-filled pen
42
CP
Click Pharmacy
1-3d · Free
Free consultationFree deliveryGPhC registered
£169.99
Total: £169.99
43
RP
Rowlands Pharmacy
4.31-3d · Free
Free consultationFree deliveryGPhC registered
£169.99/tablet
1 pre-filled pen
44
OP
Online Pharmacy 4U
1-3d · Free
Free consultationFree deliveryDiscount availableGPhC registered
£179.99/tablet
1 pre-filled pen
Code WEIGHTLOSS5 for 5% off
45
IQ Doctor
4.31-3d · Free
Free consultationFree deliveryGPhC registered
£174.99
Total: £174.99
46
FH
Fella Health
4.51-3d · Free
Free consultationFree deliveryGPhC registered
£179.00/tablet
1 pre-filled pen
47
FP
Fulham Palace Pharmacy
1-3d · Free
Free consultationFree deliveryGPhC registered
£179.00
Total: £179.00
48
SE
South Ealing Pharmacy
1-3d · Free
Free consultationFree deliveryGPhC registered
£179.00
Total: £179.00
49
HealthExpress
3.11-3d · Free
Free consultationFree deliveryGPhC registered
£179.99
Total: £179.99
50
LloydsPharmacy Online Doctor
3.21-3d · Free
Free consultationFree deliveryDiscount availableGPhC registered
£179.99
Total: £179.99
Code START30 for % off
51
SM
Simply Meds Online
4.81-3d · Free
Free consultationFree deliveryGPhC registered
£179.99/tablet
1 pre-filled pen
52
The Independent Pharmacy
4.71-3d · Free
Free consultationFree deliveryGPhC registered
£179.99
Total: £179.99
53
SH
SheMed
4.41-3d · Free
Free consultationFree deliveryDiscount availableGPhC registered
£229.00/tablet
1 pre-filled pen
Code BLUE_LIGHT for 20% off
54
CH
Curate Health
1-3d · Free
Free consultationFree deliveryGPhC registered
£189.00
Total: £189.00
55
MW
Mayfair Weight Loss Clinic
4.61-3d · Free
Free consultationFree deliveryGPhC registered
£189.00
Total: £189.00
56
VO
Voy
4.71-3d · Free
Free consultationFree deliveryGPhC registered
£194.00
Total: £194.00
57
PPRX Online Pharmacy
4.61-3d · Free
Free consultationFree deliveryGPhC registered
£194.99
Total: £194.99
58
JU
Juniper
4.51-3d · Free
Free consultationFree deliveryGPhC registered
£199.00/tablet
1 pre-filled pen
59
LW
London Weight Loss Clinic
4.41-3d · Free
Free consultationFree deliveryGPhC registered
£199.00/tablet
1 pre-filled pen
60
Numan
4.51-3d · Free
Free consultationFree deliveryGPhC registered
£209.00
Total: £209.00
61
DF
Dr Franks
2.71-3d · Free
Free consultationFree deliveryGPhC registered
£210.00/tablet
1 pre-filled pen
62
WE
Welzo
1-3d · Free
Free consultationFree deliveryGPhC registered
£225.00
Total: £225.00
63
HA
Habitual
4.51-3d · Free
Free consultationFree deliveryGPhC registered
£230.00/tablet
1 month supply
64
Pharmacy Planet
4.21-3d · Free
Free consultationFree deliveryGPhC registered
£384.00
Total: £384.00
All pharmacies GPhC registered