Choosing Your First ED Medication
Understanding your options and finding the right fit
If you're considering ED treatment for the first time, most prescribers will recommend starting with a standard on-demand dose — typically Sildenafil 50mg, Tadalafil 10mg, or Vardenafil 10mg. Each works slightly differently in terms of onset, duration, and side-effect profile, so your choice may depend on lifestyle and personal preference.
What to expect
ED medications typically take 30–60 minutes to take effect. Common side effects include headache, flushing, and nasal congestion. These are usually mild and short-lived. Avoid taking them with a heavy meal, as this can delay absorption.
Getting your prescription
Since 2018, Sildenafil has been available over the counter in the UK as Viagra Connect. For other ED medications, you'll need a prescription. Most online pharmacies listed here offer discreet consultations — some include this free of charge.
Generics save money
Generic Sildenafil, Tadalafil, and Vardenafil are clinically equivalent to branded Viagra, Cialis, and Levitra but significantly cheaper. All pharmacies listed here dispense UK-licensed generics unless otherwise stated.
Quick tips
- Start with the standard dose — your prescriber can adjust up or down based on your response
- Try a medication at least 4–8 times before deciding it doesn't work for you
- Avoid alcohol and heavy meals before taking on-demand treatments
- All medications listed require sexual stimulation to work — they do not cause automatic erections
Best prices for this stage
Sorted by total cost including consultation fees.
IQ Doctor
Best priceE-Surgery
Pharmica
HealthExpress
LloydsPharmacy Online Doctor
Manual
Chemist4U
Chemist Click
Oxford Online Pharmacy
All pharmacies GPhC registered