Sildenafil Teva
From £3.99

£40 OFF First Order
£25 OFF Every Order
Viagra (sildenafil) is a well-established treatment for erectile dysfunction, but understanding potential side effects helps set realistic expectations. Most men experience mild, temporary effects, whilst serious reactions remain rare. This comprehensive guide examines both common and uncommon side effects, helping you make informed decisions about your ED treatment. EverydayMeds offers both branded Viagra and generic sildenafil options during checkout.
From £3.99

From £28.99

From £22.99

From £27.99

From £44.99

From £23.99

From £8.49

From £32.99


When PDE5 is suppressed, blood is able to flow more freely through the body—including to the (you guessed it) penis.

More blood flow to the penis means harder, more satisfying erections once you're sexually stimulated.
In the best-case scenario, Viagra provides effective erectile dysfunction treatment with minimal side effects. Many men experience only mild, transient effects such as slight facial flushing or mild headache that resolve within 2-4 hours. The medication typically begins working within 30-60 minutes, providing reliable results for 4-6 hours without interfering with daily activities.
Taking Viagra on an empty stomach or after a light meal optimises absorption and reduces the likelihood of experiencing side effects. Staying well-hydrated helps prevent headaches, whilst avoiding alcohol minimises the risk of dizziness or blood pressure changes. Starting with the recommended 50mg dose allows your body to adjust gradually, with dose adjustments possible based on your response.
The most frequently reported side effects include headache (affecting approximately 16% of users), facial flushing (10%), and indigestion (7%). These effects are generally mild and temporary, typically lasting 2-4 hours. Nasal congestion and dizziness may also occur but usually diminish as your body adapts to the medication over several uses.
Whilst rare, serious side effects require immediate medical attention. Priapism (erection lasting over 4 hours) affects fewer than 1 in 1,000 men but constitutes a medical emergency. Sudden vision or hearing loss, though extremely uncommon, necessitates stopping treatment and seeking urgent medical care. Severe allergic reactions including difficulty breathing or swelling require emergency treatment.
Men with pre-existing heart conditions may experience more pronounced side effects, particularly blood pressure changes or chest discomfort. Viagra can interact dangerously with nitrate medications used for angina, potentially causing life-threatening blood pressure drops. Our clinical assessment identifies these risks before prescribing, ensuring treatment suitability.
Simple strategies significantly reduce side effect likelihood. Taking Viagra with a full glass of water helps prevent dehydration-related headaches. Avoiding fatty meals before taking the medication ensures optimal absorption. If you experience persistent headaches, over-the-counter paracetamol is generally safe to use alongside sildenafil, but always consult your pharmacist first.
Both branded Viagra and generic sildenafil contain identical active ingredients, producing equivalent side effect profiles. The choice between branded and generic options often comes down to personal preference and cost considerations, with generic sildenafil offering significant savings without compromising safety or efficacy. EverydayMeds provides both options, allowing you to choose based on your individual needs and budget.
Contact your healthcare provider if side effects persist beyond 24 hours, worsen over time, or significantly impact your daily activities. Any chest pain, severe dizziness, or changes in vision warrant immediate medical attention. Most side effects resolve naturally, but professional guidance ensures your safety and treatment optimisation.
It's one of the most common conditions we treat, and one of the most treatable.
Achieve your goals in just a few simple steps.
Select safe UK treatments. Quick answers.
Our expert team will use your consultation as the basis of our recommendation and communicate with you.
We’ll deliver direct to you, as quickly as tomorrow.