Silvitra (Sildenafil Citrate 100 mg + Vardenafil 20 mg) – Patient Information (UK)
Silvitra is a combination medicine containing sildenafil citrate 100 mg and vardenafil 20 mg. It is used to help treat erectile dysfunction (ED) in adult men. This page explains how Silvitra works, how it is typically taken, what to expect, safety considerations, and practical advice for use in the United Kingdom.
Important: This information is designed to help you understand your medicine. Always follow the directions provided with your product and discuss questions with a healthcare professional if anything is unclear.
1) Basic product information
| Product name | Silvitra |
|---|---|
| Active ingredients | Sildenafil citrate 100 mg + Vardenafil 20 mg |
| What it is used for | Erectile dysfunction (ED) |
| How it works | Phosphodiesterase type 5 (PDE5) inhibitor combination |
| Typical route | Oral tablet |
| Common strength rationale | Higher PDE5 inhibition for improved erectile response (individual response varies) |
2) What Silvitra is and what it’s for
Erectile dysfunction is the inability to achieve or maintain an erection sufficient for satisfactory sexual activity. Silvitra helps improve blood flow to the penis in response to sexual stimulation, supporting the erectile process.
Silvitra is intended for adult men experiencing ED. It does not cause erections automatically—sexual arousal is still required.
3) How it works (mechanism of action)
Silvitra contains two medicines that belong to the same functional group: PDE5 inhibitors.
- Sildenafil blocks the enzyme PDE5, which normally breaks down cGMP.
- Vardenafil also inhibits PDE5, increasing cGMP levels.
When sexual stimulation occurs, nitric oxide is released, which increases cGMP in erectile tissue. Higher cGMP levels help relax smooth muscle in the blood vessels of the penis, allowing more blood to flow in and helping you achieve and maintain an erection.
Key point: Silvitra enhances the body’s natural erectile response to arousal. It does not replace the need for sexual stimulation.
4) Pharmacokinetics (how the body handles it)
Pharmacokinetics describes absorption, distribution, metabolism, and elimination. While exact values may vary between individuals and product formulations, the general pattern for sildenafil and vardenafil is outlined below.
- Absorption: Both components are absorbed after oral use. Peak levels typically occur within a few hours, though times can vary based on food intake.
- Distribution: They distribute into body tissues; protein binding is high for both.
- Metabolism: Both are metabolised primarily in the liver via CYP450 enzymes (notably CYP3A4).
- Elimination: The metabolites are cleared mainly via bile/faeces, with some renal excretion.
Clinical implication: Medicines that affect liver enzymes (or strong interactions with CYP3A4) can change how strongly and how long Silvitra works.
5) Typical use and timing
Silvitra is taken as needed before sexual activity. Response time can vary, but many people find it useful when taken in advance.
Common timing guidance
- Often taken around 30 minutes to 1 hour before planned sex.
- Some effects may begin sooner or later depending on individual response, dosing, and meal timing.
- Peak effectiveness may occur within the first few hours after taking the tablet.
Sexual stimulation is required for erections to occur. If you are not aroused, the medicine is unlikely to produce an erection.
6) Food interactions
Food—especially a high-fat meal—may slow stomach emptying and delay absorption of PDE5 inhibitors. This can lead to:
- Slower onset of effect
- Less predictable timing
- In some cases, reduced or delayed effectiveness
Practical advice
- If you plan to use Silvitra, consider taking it with lighter meals where possible.
- Allow extra time after a heavy or fatty meal.
- Avoid large meals immediately beforehand if you want consistent timing.
7) Alcohol and medicine interactions
Alcohol
Alcohol can worsen erectile function by reducing arousal and affecting circulation. It may also increase the chance of side effects such as dizziness, flushing, headache, or low blood pressure.
- For best results, consider limiting alcohol.
- Avoid heavy drinking, especially when trying Silvitra for the first time.
- If you feel light-headed, stop sexual activity and sit or lie down until you feel better.
Important medicine interactions
Some combinations can be unsafe. Silvitra should be used with extra caution or avoided with certain medicines.
- Nitrates (for chest pain/angina), e.g. glyceryl trinitrate (GTN) and isosorbide—do not combine. The combination may cause a dangerous drop in blood pressure.
- Riociguat (for certain lung/blood pressure conditions)—do not combine.
- Alpha-blockers (for prostate enlargement/urinary symptoms): can increase risk of low blood pressure. Your clinician may recommend specific timing or dose adjustments.
- Strong CYP3A4 inhibitors (can raise levels): e.g. some antifungals (ketoconazole/itraconazole), some HIV medicines (ritonavir-containing regimens), clarithromycin. This may increase side effects.
- Moderate CYP3A4 inhibitors: may still increase exposure and side effects.
- Other PDE5 inhibitors: do not take with Silvitra (additive effects increase risks).
- Antihypertensives: may add to blood pressure lowering effects.
- “Poppers” (alkyl nitrites): do not combine—dangerous blood pressure drop risk.
If you are taking any medicines regularly—especially those for angina, blood pressure, prostate symptoms, or infections—check with a healthcare professional or pharmacist before using Silvitra.
8) Indications (when it may be used)
Silvitra is indicated for the treatment of erectile dysfunction in adult men who require help achieving and maintaining an erection during sexual activity.
It is not indicated for:
- Erectile dysfunction due to a reversible cause without proper evaluation (e.g., uncontrolled diabetes, medication side effects, hormone disorders)
- Women or children
- General sexual performance enhancement in individuals without ED
9) Dosing information (typical dosing patterns)
Dosing for PDE5 inhibitors should be individualised based on response and tolerability. In the UK, follow the instructions supplied with the product and any clinician guidance.
Typical dosing approach
- Adults: Silvitra is usually taken as needed before sexual activity.
- Maximum frequency: Do not exceed the dosing limits stated with your product. Taking it more frequently than recommended increases the likelihood of side effects without improving safety or effectiveness.
How to take it
- Take the tablet by mouth with water.
- Try to take it at a consistent time before sex to understand your personal response.
- If you don’t notice an effect, avoid “doubling up” or taking additional PDE5 medicines—this increases risk.
Who may need special consideration
Certain groups may require lower starting doses or extra monitoring, such as those with:
- Severe liver impairment
- Severe kidney impairment
- Significant cardiovascular disease (your ability to engage in sexual activity should be assessed)
- Concomitant medicines that affect metabolism (CYP3A4 inhibitors)
10) Safety profile and possible side effects
Like all medicines, Silvitra can cause side effects. Many are mild to moderate and improve as your body adjusts, but some symptoms require urgent attention.
Common side effects
- Headache
- Flushing (warmth/redness in the face)
- Indigestion or nausea
- Dizziness or light-headedness
- Stuffy nose (nasal congestion)
- Back pain or muscle aches (sometimes reported with PDE5 inhibitors)
- Visual disturbances (e.g., blurred vision or changes in colour perception—report if persistent)
Less common but serious side effects (seek medical help)
- Chest pain or symptoms of an allergic reaction (swelling of face/lips, rash, breathing difficulty)
- Severe dizziness or fainting
- Prolonged erection (priapism)—an erection lasting longer than recommended medical thresholds requires urgent care
- Sudden vision loss or significant eye pain (seek emergency attention)
- Sudden hearing loss or severe ringing in the ears
When not to use (contraindications and key precautions)
Do not use Silvitra if:
- You are taking nitrates (including GTN) or riociguat
- You use nitrite “poppers”
- You have been advised against sexual activity due to unstable heart conditions
Extra caution is needed if you have a history of:
- Low blood pressure or frequent fainting
- Severe cardiovascular disease
- Recent stroke or heart attack (timing varies—seek medical advice)
- Blood cell disorders affecting erections (e.g., sickle cell anaemia)
- Known genetic retinal conditions
11) Practical use tips (to improve results and reduce problems)
- Start with planning: Take it when you can allow time for onset; don’t rush.
- Mind the meal: Avoid heavy/fatty meals right before use.
- Use moderation with alcohol: Reduced alcohol supports arousal and circulation.
- Don’t combine PDE5 inhibitors: Using multiple similar medicines increases risk.
- Expect variability: Stress, sleep, relationship factors, and baseline health can affect effectiveness.
- Check your medication list: Particularly nitrates, alpha-blockers, antihypertensives, and antibiotics/antifungals/HIV medicines.
- If it fails once: It may still work at another time—attempt again as directed, but avoid extra dosing beyond recommendations.
- Report persistent issues: If ED continues or side effects occur, seek advice. Underlying causes (e.g., diabetes, cardiovascular disease, hormone issues) may need treatment.
12) Alternative options
If Silvitra isn’t suitable or doesn’t work well for you, there are other ED treatment options available in the UK. Alternatives include:
- Single-agent PDE5 inhibitors: Common options include sildenafil (Viagra-type), tadalafil (Cialis-type), and vardenafil (Levitra-type). Some people respond better to one than another.
- Tadalafil-based regimens: Tadalafil can last longer for some men and may suit different timing preferences.
- Non-PDE5 options: A clinician may consider vacuum erection devices, psychological/relationship therapy, or (in selected cases) injections or urethral therapies.
- Lifestyle approaches: Exercise, weight management, stopping smoking, reducing alcohol, and treating conditions like diabetes or high blood pressure can improve ED over time.
- Medication review: Some medicines (certain antidepressants, blood pressure drugs, etc.) can contribute to ED; adjusting treatment may help.
Discuss options with a healthcare professional if you have complex medical conditions or ongoing symptoms.
13) Market and legal context for the United Kingdom
ED medicines in the UK are regulated and are typically made available through authorised routes. In recent years, UK guidance and regulatory attention have focused on:
- Safe access and screening for contraindications and high-risk interactions
- Preventing counterfeit or unregulated products
- Clear patient information on side effects and urgent warnings
- Pharmacovigilance and reporting of adverse reactions
Many PDE5 inhibitors are prescription-only medicines in the UK. Availability may depend on local prescribing pathways and pharmacy services. When shopping online, ensure the product is supplied through a legitimate, regulated pharmacy service and that the product information (including strength and ingredients) matches what is expected.
Tip for UK customers: Choose services that provide transparent product details, professional support, and appropriate clinical checks for safety.
14) Recent guidance and safety messaging (UK-focused)
Across the UK, healthcare messaging around ED medicines generally emphasises:
- Do not use nitrates with PDE5 inhibitors
- Check drug interactions (especially for heart-related medicines and strong CYP3A4 inhibitors)
- Be cautious with underlying cardiovascular disease and ensure sexual activity is safe for you
- Seek urgent help for priapism, sudden vision changes, or severe allergic reactions
- Use only reputable sources to reduce the risk of counterfeit medicines
If you have any doubts about suitability, medical advice is recommended before use—especially if you have chest pain, take heart medicines, or have complex health conditions.
15) Delivery and availability in the UK
Availability of Silvitra and delivery options depend on the supplier and local regulatory processes. When ordering online in the UK, typical expectations include:
- Processing and dispatch: Orders are usually processed quickly during opening hours.
- Delivery timeframe: Delivery times vary by carrier and location (England, Scotland, Wales, Northern Ireland).
- Packaging: Medicines are normally delivered in discreet packaging.
- Order tracking: Many services provide tracking updates.
For the most accurate delivery estimate, check the product listing and delivery information on the pharmacy website.
16) FAQ
1. Does Silvitra give an erection automatically?
No. Silvitra works by improving blood flow in response to sexual stimulation. You will still need arousal for erections to occur.
2. How long before sex should I take Silvitra?
Many people take it 30 minutes to 1 hour beforehand. If you eat a heavy meal, onset may be slower—allow more time and consider lighter meals next time.
3. Can I take it with food?
Yes, but food—especially high-fat meals—may delay how quickly it works. For more predictable timing, avoid heavy meals right before taking it.
4. Can I drink alcohol while using Silvitra?
It’s best to limit alcohol. Too much alcohol can reduce effectiveness and increase side effects such as dizziness or low blood pressure.
5. What medicines must I avoid?
Do not use Silvitra with nitrates (e.g., GTN) or riociguat. Avoid combining with “poppers” (alkyl nitrites). Also be cautious with alpha-blockers and medicines that strongly affect CYP3A4 metabolism.
6. What if I don’t get the expected result?
ED has many causes. If one attempt doesn’t work, you may respond differently on another occasion—follow the product instructions and avoid extra dosing. If ED persists, talk to a healthcare professional to identify underlying causes or consider alternatives.
7. How often can I take Silvitra?
Follow the maximum dosing frequency stated with your product instructions. Taking more often than recommended increases risk and does not necessarily improve results.
8. What are the warning signs that need urgent help?
Seek urgent medical help if you experience chest pain, fainting, priapism (prolonged erection), sudden vision loss or severe eye pain, or symptoms of a serious allergic reaction.
9. Can Silvitra be used if I have high blood pressure?
Some men with high blood pressure may be able to use PDE5 inhibitors, but medication combinations are important. Discuss your medicines and cardiovascular status with a healthcare professional—particularly if you take multiple blood pressure medicines or nitrates.
10. Are there safer alternatives?
Some people do better on a single-agent PDE5 inhibitor (such as sildenafil or tadalafil), while others may require a non-PDE5 approach. Your best option depends on your health, timing needs, and interaction risks.
17) Summary
Silvitra (sildenafil citrate 100 mg + vardenafil 20 mg) is a PDE5 inhibitor combination used to help men with erectile dysfunction achieve and maintain an erection during sexual activity. It works by enhancing the nitric-oxide/cGMP pathway to increase blood flow to erectile tissue. Effectiveness depends on timing, arousal, and avoiding problematic interactions—especially nitrates.
If you’re unsure whether Silvitra is safe for you, or if you have cardiovascular conditions or take interacting medicines, seek tailored medical advice. For best results, use it as directed, consider meal and alcohol effects, and seek support if ED is persistent or side effects occur.
