Cobra-120
In brief
- Cobra 120 is not licensed by the MHRA; sildenafil is a prescription-only medicine in the UK.
- Cobra 120 contains sildenafil citrate and is used for erectile dysfunction; it works as a phosphodiesterase type 5 (PDE5) inhibitor, helping increase blood flow to the penis during sexual stimulation. The same active ingredient is also used in licensed sildenafil medicines for approved indications.
- The usual dose of sildenafil for erectile dysfunction is 50 mg taken as needed, about 30–60 minutes before sexual activity, with a range of 25–100 mg depending on response and tolerance. Cobra 120 contains 120 mg, which is above standard starting doses and should only be used with medical supervision.
- The form of administration is an oral tablet.
- It usually starts working within about 30–60 minutes after taking it.
- The duration of action is typically around 4–6 hours.
- Alcohol can increase the risk of dizziness, low blood pressure, flushing, and reduced erectile response, so it is best to avoid or strictly limit alcohol when taking Cobra 120.
- The most common side effects are headache, flushing, nasal congestion, indigestion, dizziness, and sometimes visual changes such as blurred vision or altered colour perception.
- Would you like to try Cobra 120 without a prescription?
Legal status and availability in the UK
Cobra 120 is not approved by the MHRA; licensed sildenafil products are prescription-only medicines (POM) in the UK.
In our online pharmacy, Cobra 120 is available without a prescription, with discreet delivery to the United Kingdom in 9–21 days.
Basic Cobra 120 information
- INN (international nonproprietary name): sildenafil (as sildenafil citrate)
- Brand names: Cobra 120 (not licensed in the UK); licensed UK sildenafil products include generic sildenafil tablets and Revatio
- ATC code: G04BE03
- Forms and strengths: tablet, 120 mg (Cobra 120); licensed sildenafil tablets 25, 50 and 100 mg; Revatio 20 mg tablets or injection
- Manufacturers: HAB Pharmaceuticals and Research Ltd. and Pharmax Lifesciences (Cobra 120)
- Registration status in the United Kingdom: Cobra 120 is not MHRA-approved; licensed sildenafil products are prescription-only
- OTC / Rx classification: Prescription only
Clinical effectiveness in the UK
Why do some men get a good response on one tablet, while others feel it has done almost nothing?
That is a very common question in UK pharmacy counselling.
In NHS and private care, sildenafil is usually taken on demand, with the dose chosen around the individual rather than the other way round.
Real-world use in the UK is typically 50 to 100 mg, taken 30 to 60 minutes before sex, and not more than once in 24 hours.
When it works well, men often report firmer erections, better confidence, and less pressure in the relationship.
When it does not work well, the problem is often timing, food, alcohol, anxiety, or an unsuitable dose rather than a total lack of drug effect.
- Benefits: improved erection quality, better self-confidence, and more satisfying intimacy.
- Limitations: delayed onset after a heavy meal, variable response with anxiety, and incomplete benefit if the dose is not right.
- Counselling point: sildenafil still needs sexual stimulation to work properly.
| Expected effect | Common challenge | Counselling point |
|---|---|---|
| Stronger erections | Heavy meal delays onset | Take on an emptier stomach where possible |
| More confidence | Anxiety-related non-response | Try a calm setting and realistic expectations |
| Better relationship satisfaction | Inconsistent use | Use the medicine as directed, not as needed more than once daily |
In UK care pathways, a GP review usually covers medication history, cardiovascular screening, and the broader causes of erectile dysfunction.
Digital repeat prescribing through NHS systems has made follow-up easier for many men.
Cobra 120 sits outside standard NHS practice because it is a high-strength product that is not licensed in the UK.
Indications and expanded uses
What exactly is sildenafil licensed for, and where does Cobra 120 fit in?
This is where a clear distinction matters.
- Approved use
- Sildenafil citrate is licensed for erectile dysfunction.
- In a different formulation, it is also used for pulmonary arterial hypertension as Revatio 20 mg three times daily.
- Specialist use
- Revatio is used under specialist supervision for pulmonary arterial hypertension.
- Off-label or high-risk use
- Cobra 120 is marketed for erectile dysfunction but is not licensed by the MHRA.
- Its 120 mg strength is above usual UK starting doses and should not be treated as a standard first option.
Some men ask for stronger tablets after lower doses have not worked well.
That can happen, but dose escalation should happen under medical supervision, particularly in older adults or people with heart disease.
Sildenafil is not a cure for the underlying cause of ED, whether that cause is vascular, hormonal, psychological, or medication-related.
It gives symptomatic relief, not a permanent fix.
That is why the same man may still need diabetes review, blood pressure control, or a relationship conversation alongside treatment.
Composition and brand landscape
Patients often know the brand name before they know the active ingredient.
At the pharmacy counter, brand names are often more familiar than “sildenafil”, even though the INN is the key medical term.
| Brand | Active ingredient | Strength | Packaging | UK regulatory status |
|---|---|---|---|---|
| Cobra 120 | Sildenafil citrate | 120 mg | Blister packs, usually 4 or 10 tablets | Not MHRA-approved |
| Generic sildenafil | Sildenafil citrate | 25, 50, 100 mg | Bottle or blister, 2 to 12 tablets | Licensed |
| Revatio | Sildenafil citrate | 20 mg | Variable packs, including hospital supply | Licensed |
Cobra 120 is reported from HAB Pharmaceuticals & Research Ltd. and also Pharmax Lifesciences.
Counselling matters because the regulatory status of Cobra 120 is not the same as that of a UK licensed sildenafil tablet.
Sildenafil 25 mg, 50 mg and 100 mg are the licensed UK strengths for erectile dysfunction.
Contraindications and special precautions
Who should avoid sildenafil altogether, and who needs a proper medical review first?
Safety has to come before strength.
- Do not use: nitrate-containing drugs because of the risk of life-threatening hypotension.
- Do not use: if there is a known allergy to sildenafil or any excipient.
- Do not use: in severe cardiovascular or hepatic impairment.
- Do not use: if a clinician has advised against sexual activity because of unstable heart disease.
- Needs medical review: penile deformity such as Peyronie’s disease.
- Needs medical review: retinal disorders, retinitis pigmentosa, bleeding disorders, active peptic ulcer, hypotension, poorly controlled hypertension, or strong CYP3A4 interactions.
Older adults and people with liver or kidney impairment usually start low, often at 25 mg.
That is one reason Cobra 120 is not suitable as a first try.
Everyday issues also matter.
Driving should be avoided if dizziness or visual disturbance occurs.
Alcohol can increase the chance of light-headedness and a blood-pressure drop.
Over-the-counter medicines and online products should be checked carefully, especially if there are heart tablets, antifungals, antibiotics or medicines that affect CYP3A4.
Dosage guidelines in UK practice
How should sildenafil be taken in practice, and why does dose adjustment matter so much?
For erectile dysfunction, the usual approach is a single on-demand dose, not a daily maintenance routine.
The common UK range is 50 to 100 mg taken 30 to 60 minutes before sex, with no more than one dose in 24 hours.
Older adults often begin at 25 mg or 50 mg.
Those with liver or kidney impairment should also start low.
| Patient group | Usual dose | Caution | Cobra 120 suitability |
|---|---|---|---|
| Typical adult with ED | 50 mg, may increase to 100 mg | Take 30 to 60 minutes before sex | Not first-line |
| Older adult | 25 mg or 50 mg | Higher risk of side effects | Generally unsuitable to start with |
| Liver or kidney impairment | Lower starting dose | Needs dose reduction | Not recommended |
| Very sensitive to side effects | 25 mg | Review response before increasing | Too strong as a first dose |
In UK practice, e-prescriptions and pharmacist review make titration easier than it used to be.
A GP or pharmacist can adjust the plan after hearing whether the first dose worked, whether there were side effects, and whether food or alcohol interfered.
Because ED treatment is on demand, missed-dose advice is usually not relevant.
High-strength tablets like Cobra 120 should only be considered with explicit healthcare provider consent.
Interactions with food, drink, and medicines
Why does one man say the tablet worked perfectly, while another says it did nothing after a curry and a couple of pints?
Food, drink and co-medication can make a real difference.
| Interaction | Risk | What UK pharmacists advise |
|---|---|---|
| Nitrates | Potentially dangerous blood-pressure drop | Never combine |
| Heavy meal | Delayed onset | Take on an emptier stomach if possible |
| Alcohol | Dizziness and low blood pressure | Keep intake modest or avoid if you are sensitive |
| Strong CYP3A4 inhibitors or inducers | Changed sildenafil levels | Check with a pharmacist or GP first |
| Some antihypertensives or alpha-blockers | Extra blood-pressure lowering | Needs medical review before use |
Tea and coffee are usually less important than nitrates or alcohol, but very high caffeine intake can worsen palpitations or anxiety in some men.
That can make a bad night feel even worse.
Examples seen in UK primary care include antifungals, certain antibiotics, HIV medicines and recreational drugs, all of which may affect the safety picture.
If a suspected side effect happens, the MHRA Yellow Card system is the right route for reporting.
Comparable medicines and patient preferences
Why do some UK patients choose tadalafil instead of sildenafil, and does a higher dose of Cobra 120 change that choice?
Not necessarily.
Some men prefer tadalafil because it suits spontaneity and lasts longer.
Others prefer sildenafil because it is familiar and widely available.
The best choice usually depends on previous response, side effects and comorbidities.
- Sildenafil: familiar, on-demand, effective for many men, but can be affected by food.
- Tadalafil: longer duration, more spontaneity, often chosen when timing is a problem.
- Vardenafil: similar class, sometimes chosen when sildenafil is not suitable.
- Avanafil: another option with a different onset and duration profile.
| Medicine | Onset | Duration | Flexibility | Common side effects |
|---|---|---|---|---|
| Sildenafil | About 30 to 60 minutes | Shorter than tadalafil | On-demand use | Headache, flushing, nasal congestion |
| Tadalafil | Varies | Longer duration | More spontaneity | Similar class effects |
| Vardenafil | Similar class pattern | Intermediate | On-demand use | Similar class effects |
| Avanafil | Different onset profile | Intermediate | On-demand use | Similar class effects |
Cobra 120’s higher strength does not automatically mean better results.
In fact, it can increase the chance of adverse effects without solving timing, anxiety or relationship issues.
Frequently asked questions
Is Cobra 120 approved by the MHRA?
No.
Cobra 120 is not licensed by the MHRA.
Can I get sildenafil on the NHS?
Yes, sildenafil can be prescribed on the NHS when it is clinically appropriate.
GP review and prescription rules still apply.
Is 120 mg stronger than Viagra 100 mg?
Yes, 120 mg is higher than the maximum licensed 100 mg sildenafil dose.
That does not mean it is better, and it is above usual UK starting guidance for new users.
Can I take it with alcohol or nitrates?
Alcohol can increase dizziness and low blood pressure.
Nitrates should not be taken with sildenafil because the combination can be dangerous.
Guidelines for proper use and patient support
What would a pharmacist normally say at the counter before handing over sildenafil?
Start with the basics and keep them simple.
- Take the medicine only as prescribed or supplied after a proper assessment.
- Avoid nitrates completely.
- Allow enough time for onset, usually 30 to 60 minutes.
- Do not take more than one dose in 24 hours.
- Seek urgent help for priapism, severe dizziness, chest pain or vision loss.
- Store tablets at 20 to 25°C, away from moisture, heat and light, and out of reach of children.
- Priapism
- A painful erection lasting too long and needing urgent medical help.
- Severe dizziness
- May suggest blood-pressure lowering that needs assessment.
- Chest pain
- Could signal a heart problem and should never be ignored.
- Vision loss
- A rare but urgent warning sign requiring immediate medical attention.
NHS website advice, NHS 111, your GP, repeat prescription systems and pharmacy consultation rooms are all sensible support routes.
Electronic prescriptions are becoming more common, and some patients appreciate the discretion of online pharmacy triage.
Even so, regulated supply remains the important part, especially when a medicine is being used for the first time or at a higher strength.
Delivery across the United Kingdom
| City | Region | Delivery time |
|---|---|---|
| London | England | 9–21 days |
| Birmingham | England | 9–21 days |
| Manchester | England | 9–21 days |
| Leeds | England | 9–21 days |
| Liverpool | England | 9–21 days |
| Sheffield | England | 9–21 days |
| Bristol | England | 9–21 days |
| Newcastle upon Tyne | England | 9–21 days |
| Nottingham | England | 9–21 days |
| Leicester | England | 9–21 days |
| Cardiff | Wales | 9–21 days |
| Edinburgh | Scotland | 9–21 days |
| Glasgow | Scotland | 9–21 days |
| Belfast | Northern Ireland | 9–21 days |
Cobra 120 is a sildenafil product that should always be treated with the same caution as any prescription medicine, particularly when the strength is higher than standard UK starting guidance.
If a man has never used sildenafil before, a lower licensed dose is usually the safer place to start.
That approach fits UK pharmacist counselling far better than jumping straight to a 120 mg tablet.
