Viagra Black
In brief
- In our pharmacy, you can buy Viagra Black without a prescription, with delivery in 9–21 days throughout the United Kingdom. Discreet and anonymous packaging.
- Viagra Black is used to treat erectile dysfunction (ED) and sometimes pulmonary arterial hypertension; it contains sildenafil, a phosphodiesterase type 5 (PDE5) inhibitor that increases blood flow by potentiating nitric oxide–mediated vasodilation.
- The usual dosage is 25 mg, 50 mg or 100 mg; for ED the typical starting dose is 50 mg taken about one hour before sexual activity, with a maximum recommended dose of 100 mg once daily (start at 25 mg in older adults or those with interactions).
- The form of administration is oral tablets (film-coated); tablets are commonly supplied in blister packs of 1, 2, 4 or 8.
- The effect of the medication usually begins within 30–60 minutes after dosing (some users may notice effects sooner, from around 15–20 minutes, depending on formulation and food intake).
- The duration of action is typically up to about 4 hours for erectile function; individual response varies and chronic PAH regimens differ.
- Alcohol warning: avoid excessive alcohol when taking sildenafil — alcohol can increase dizziness and fainting, reduce sexual performance, and exacerbate side effects; do not combine sildenafil with nitrates or recreational nitrites.
- The most common side effect is headache.
- Would you like to try Viagra Black without a prescription?
Legal status and availability in the UK
Viagra Black is not a UK-licensed brand. Its active substance, sildenafil, is a prescription-only medicine (POM) in the UK, apart from Viagra Connect 50 mg, which is a pharmacy (P) medicine.
In our online pharmacy, Viagra Black is available without a prescription, with discreet delivery to the United Kingdom in 9–21 days.
Basic Viagra Black information
- INN (international nonproprietary name): Sildenafil.
- Brand names available in the United Kingdom: Viagra Black (not a UK-licensed brand); licensed sildenafil medicines in the UK include Viagra, Viagra Connect and generic sildenafil
- ATC code: G04BE03
- Forms and dosages: Film-coated tablets; licensed sildenafil tablets are 25 mg, 50 mg and 100 mg
- Manufacturers in the United Kingdom: Pfizer (Viagra) and licensed generic manufacturers such as Accord and Mylan
- Registration status in the United Kingdom: Viagra Black is not licensed in the UK; licensed sildenafil medicines are regulated by the MHRA
- OTC / Rx classification: Sildenafil is a prescription-only medicine (POM); Viagra Connect 50 mg is a pharmacy (P) medicine
“Viagra Black” is often a marketing label and may not correspond to an MHRA‑licensed product. Always verify the active ingredient on the leaflet or packaging.
Product identity and composition
Active ingredient and INN
The active ingredient in Viagra Black is sildenafil, the International Nonproprietary Name (INN).
Any credible product labelled “Viagra Black” should explicitly declare sildenafil on the leaflet or packaging.
Always check the summary of product characteristics or SPC for the exact active substance and excipients.
Common formulations and strengths
Typical strengths available are 25mg, 50mg and 100mg tablets.
Film‑coated oral tablets are the standard form for erectile dysfunction use.
There are no approved topical creams or injectable forms for sildenafil for ED in the UK.
| Strength | Typical pack sizes | Form |
|---|---|---|
| 25mg | 1, 2, 4, 8 tablets | Film‑coated tablet |
| 50mg | 1, 2, 4, 8 tablets | Film‑coated tablet |
| 100mg | 1, 2, 4 tablets | Film‑coated tablet |
Branded packaging typically shows the blue diamond‑shaped tablet and blister packs of 1–8 tablets.
Pfizer is the original manufacturer and licensed generics are produced by TEVA, Sandoz, Mylan and others.
Some “Viagra Black” offerings on e‑shops are unlicensed or counterfeit and may not contain listed amounts of sildenafil.
Availability and brands in the UK
UK supply
Sildenafil and Viagra‑branded products are prescription‑only medicines (POM) in the UK.
In the UK, certain sildenafil packs are available via pharmacy supply as Viagra Connect after a pharmacist consultation.
Sildenafil can also be prescribed by a GP or a private prescriber.
Indications and uses
Erectile dysfunction (primary use)
Sildenafil is licensed primarily for erectile dysfunction in adult men.
Typical ED guidance uses sildenafil as a single dose before sexual activity rather than continuous therapy.
Standard starting dose for ED is 50mg, adjusted to 25mg for sensitivity or to 100mg if 50mg is insufficient.
Pulmonary arterial hypertension and off-label notes
Sildenafil is also indicated for pulmonary arterial hypertension under specialist supervision at different dosing regimens.
PAH regimens can include 20mg three times daily for some formulations and are managed by specialists rather than community prescribers.
ATC code G04BE03 classifies sildenafil as a PDE5 inhibitor suitable for ED and PAH when used per licence.
GP or sexual health clinic assessment is recommended before starting sildenafil for ED, with pharmacists able to supply Viagra Connect following screening.
Dosing, timing and practical use
Typical dosing schedules
Take sildenafil 30–60 minutes before sexual activity for best effect.
Onset typically occurs in 30–60 minutes and effects may last up to about four hours.
The usual starting dose is 50mg for ED, with adjustments to 25mg for elderly patients or 100mg if 50mg is ineffective.
Do not take more than one dose in 24 hours.
How to take — food, alcohol, and timing
Avoid high‑fat meals immediately before dosing as they can delay absorption and slow onset.
Alcohol increases the chance of dizziness and may blunt the erectile response, so moderate intake is advised.
Keep a simple diary of dose, timing and response to help with titration and to report side effects.
| Patient group | Recommended dose adjustment |
|---|---|
| Elderly | Start at 25mg and adjust carefully. |
| Liver or kidney impairment | Start at 25mg; specialist review for severe impairment. |
| Concomitant interacting medications | Consider dose reduction and pharmacist/prescriber review. |
If a lack of effect persists after dose adjustment, consult a pharmacist or prescriber for further assessment rather than increasing dose without advice.
Contraindications and drug interactions
Absolute contraindications
Concurrent use with nitrates or nitric oxide donors is absolutely contraindicated because of the risk of severe hypotension.
Severe cardiovascular disease such as recent myocardial infarction or stroke is a contraindication until reviewed by a clinician.
Known allergy to sildenafil is an absolute contraindication.
Important drug interactions to check
Major interactions include nitrates and riociguat, which must never be combined with sildenafil.
Certain protease inhibitors, some antifungals and macrolide antibiotics can raise sildenafil levels and require dose review.
Alpha‑blockers may cause symptomatic hypotension when combined with sildenafil and need careful monitoring.
| Drug | Interaction | Practical action |
|---|---|---|
| Nitrates | Severe hypotension risk | Contraindicated; do not prescribe or recommend. |
| Riociguat | Dangerous hypotension | Contraindicated; specialist advice required. |
| Protease inhibitors | Increased sildenafil exposure | Reduce dose and monitor; consult prescriber. |
| Alpha‑blockers | Orthostatic hypotension | Start low and monitor blood pressure closely. |
Pharmacists should review a full medication list at consultation and advise immediate medical help if severe dizziness, chest pain or fainting occur after dosing.
Side effects and management
Common mild to moderate effects
Common side effects include headache, flushing, indigestion, nasal congestion and dizziness.
Moderate effects can include visual disturbance such as blue tint or blurred vision, back pain and myalgia.
Most side effects are transient and resolve without treatment.
Self‑care measures include hydration, rest and avoiding alcohol until you know how sildenafil affects you.
When to seek urgent care
Priapism — an erection lasting more than four hours — is a medical emergency and requires immediate hospital treatment.
Seek urgent care for chest pain, sudden vision loss or sudden hearing loss after taking sildenafil.
Report adverse reactions to the MHRA via the Yellow Card scheme and retain packaging and batch details when reporting.
- If severe headache, fainting, chest pain or prolonged erection occurs, call emergency services.
- For persistent mild side effects lasting more than a few days contact a pharmacist or GP.
Comparison with other PDE5 inhibitors
Tadalafil, vardenafil, avanafil differences
Sildenafil typically works within 30–60 minutes and lasts around four hours.
Tadalafil often has a longer duration of effect of up to 36 hours and is chosen where a longer window is desired.
Vardenafil and avanafil differ in onset and tolerability profiles, with avanafil marketed for rapid onset in some cases.
When sildenafil (Viagra Black) is preferred
Sildenafil is preferred for single‑dose, as‑needed use where a short to moderate time window is suitable.
Choice depends on spontaneity needs, interaction profile, cardiovascular history and personal response during a supervised trial.
| Drug | Onset | Duration | Notes |
|---|---|---|---|
| Sildenafil | 30–60 minutes | ~4 hours | Food slows onset; single‑dose use |
| Tadalafil | 30–60 minutes | Up to 36 hours | Daily option available |
| Avanafil | 15–30 minutes | ~6 hours | Faster onset marketed |
“Viagra Black” branding does not change pharmacology; verify sildenafil content before assuming greater strength or faster effect.
Legal, regulatory and reporting considerations
MHRA and legal status
Pharmacies must supply medicines in line with MHRA guidance and licences and must not make unverified superiority claims for “Viagra Black”.
Reporting adverse events and counterfeit concerns
Report adverse reactions via the Yellow Card scheme and keep packaging and lot numbers for investigation.
Report suspected counterfeit products to MHRA and cease use of any suspect batch.
Clinical mechanism
How sildenafil (PDE5 inhibitor) works
Sildenafil inhibits phosphodiesterase type 5 (PDE5), which increases cGMP levels in the corpus cavernosum during sexual stimulation.
Increased cGMP leads to smooth muscle relaxation and improved blood flow to support an erection when sexually stimulated.
The ATC code G04BE03 places sildenafil in the PDE5 inhibitor class used for ED and PAH indications.
Efficacy and safety
Clinical trials demonstrate sildenafil improves erectile function for many men compared with placebo, with variable individual response rates.
Common safety endpoints include headache, flushing and dyspepsia, which are typically mild and transient.
Efficacy differs among individuals and can be influenced by psychological, vascular and neurological factors.
| Endpoint | Typical finding |
|---|---|
| Onset | 30–60 minutes |
| Duration | Up to 4 hours |
| Common adverse events | Headache, flushing, dyspepsia |
Consult SPCs and MHRA/NHS guidance for detailed trial data and suitability for individual patients.
Delivery across the United Kingdom
| City | Region | Delivery Time |
|---|---|---|
| London | Greater London | 9–21 days |
| Birmingham | West Midlands | 9–21 days |
| Manchester | Greater Manchester | 9–21 days |
| Glasgow | Scotland | 9–21 days |
| Leeds | West Yorkshire | 9–21 days |
| Sheffield | South Yorkshire | 9–21 days |
| Liverpool | Merseyside | 9–21 days |
| Bristol | South West England | 9–21 days |
| Edinburgh | Scotland | 9–21 days |
| Cardiff | Wales | 9–21 days |
| Belfast | Northern Ireland | 9–21 days |
| Newcastle | Tyne and Wear | 9–21 days |
| Nottingham | Nottinghamshire | 9–21 days |
| Leicester | Leicestershire | 9–21 days |
| Southampton | Hampshire | 9–21 days |
Key safety points
A pharmacist can help screen for contraindications, review interactions and advise on dose adjustment such as starting at 25mg for older people or those with liver or kidney impairment.
Do not combine sildenafil with nitrates or riociguat and seek urgent care for chest pain, fainting or erection lasting longer than four hours.
Report adverse events via the Yellow Card scheme and retain packaging information to assist any investigation.
For persistent lack of effect or ongoing sexual difficulties, consult a GP or sexual health clinic for assessment rather than increasing dose without advice.
