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Sildenafil is a medication that increases blood flow to tissues by inhibiting the enzyme PDE5. When people mention "female Viagra" they are generally referring to the off-label use of sildenafil by women to try to improve physical aspects of sexual response, such as genital blood flow, lubrication and arousal.
Evidence from patient outcomes in women is mixed. Some small trials and case reports have shown improvement in genital engorgement and lubrication for certain subgroups, but benefit is not consistent for everyone. Any decision to try sildenafil should be made together with a qualified clinician who can assess likely causes and expectations.
- Sildenafil citrate serves as the active ingredient
- Principal aim when used off-label: enhance genital blood flow and physical arousal
- Commonly studied off-label doses: 25 mg, 50 mg and 100 mg
For a brief explanation of how sildenafil produces its effects see Pharmacodynamic the mechanism behind this of action. For practical administration tips go to How to bear it.
How the drug acts
Sildenafil inhibits phosphodiesterase type 5 (PDE5), which prolongs the action of nitric oxide mediated signalling in blood vessel walls. The result is smooth muscle relaxation and increased blood flow to certain tissues, including genital tissues, which may increase swelling and sensitivity.
It is important to understand that sildenafil targets physical circulation. It does not reliably increase sexual desire and will not address psychological causes of sexual difficulty. A healthcare professional can advise whether improving blood flow is likely to help in your individual situation.
How to handle it
Sildenafil intended for sexual activity is usually taken by mouth with water. Absorption can be slowed by a large or fatty meal, which may delay onset.
- Administration: swallow the tablet with water; avoid taking with a heavy meal for quicker effect.
- Onset moment and length: many people notice effects within 30 to 60 minutes; the duration of action can extend for several hours.
- Off-label dosing approaches: starting with 25 mg or 50 mg is common; some clinicians may allow up to 100 mg depending on tolerability and response.
- Frequency: do not take more than one dose in any 24 hour period unless directed by a prescriber.
Only use sildenafil following clinician advice. If you need further information about interacting medicines see Anticipated a mutual exchange of ideas possibilities.
Protective guidelines to review
Before trying sildenafil, share a full medical history and a list of all medicines, supplements and herbal products you use in dialog with your prescriber. Important considerations include:
- Maternity care for pregnancy and lactation: discuss plans for conception or breastfeeding with a clinician check before use.
- Cardiovascular status: heart disease, angina, prior stroke or heart attack, and low blood pressure require careful review.
- Eye, liver or kidney conditions: significant impairment can affect safety or dosing.
- Ethanol use: drinking large amounts around the time of dosing can increase dizziness and may reduce effectiveness.
- Variation in response: the cause of sexual problems varies; some groups studied include postmenopausal women and those with medication-related sexual dysfunction.
If you experience severe or worrying symptoms after taking sildenafil, seek medical attention promptly. For a list of common and rare unfavorable health effects see Unwanted effects with warning indicators.
Avoid using it in these situations
- Allergy to sildenafil or any excipient in the formulation.
- Concurrent treatment with organic nitrates or inhaled nitrites for angina or recreational use — this combination can cause a dangerous fall in blood pressure.
- Use with soluble guanylate cyclase stimulators such as riociguat is not recommended.
- Any medical situation where sexual activity is considered unsafe because of cardiovascular risk.
Possible drug postmarketing effects and alert signs
Many people tolerate sildenafil, but adverse symptoms can occur. Common and serious reactions include:
- Frequent but generally mild: headaches, facial flushing, indigestion, nasal congestion, nausea, light sensitivity and dizziness.
- Less widely used but potentially severe: sudden vision or hearing changes, severe hypotension, fainting, chest pain or severe allergic reactions. These require immediate medical assessment.
If you notice sudden loss of vision or hearing, chest pain, fainting or other alarming symptoms after taking sildenafil go to an emergency department without delay.
Anticipated the reciprocal contact between individuals possibilities
Sildenafil can interact with a range of medicines. Provide your clinician with a complete list of prescription, over the counter and herbal medicines before receiving treatment.
- Nitrates and nitric oxide donors: combining these with sildenafil can cause severe drops in blood pressure and must be avoided.
- Blood pressure agents such as alpha blockers: additive hypotensive effects are possible; timing and dosing should be discussed with a prescriber.
- Strong CYP3A4 inhibitors (for example ritonavir, ketoconazole, clarithromycin): these can raise sildenafil concentrations and may necessitate dose reduction or avoidance.
- CYP3A4 inducers (for example rifampicin): may reduce sildenafil exposure and limit effectiveness.
- Grapefruit juice: can increase exposure to sildenafil and is best avoided near dosing.
- Alcohol solution: may increase dizziness and impair judgment; limit consumption when planning to use sildenafil.
How to manage a the medication dose was missed
For on-demand use: if you miss a planned dose, take sildenafil when you next expect sexual activity and when it is safe to do so. Do not take extra medicine to compensate for a i failed to take my dose. For any clinician-prescribed regular regimen follow the specific instructions provided by your prescriber regarding i failed to take my doses.
Actions to take during the person overdosed and emergency events
If someone has taken more sildenafil than recommended seek urgent medical advice. Symptoms that should prompt immediate attention include severe dizziness, fainting, chest pain, an unusually fast or irregular heartbeat, or acute visual disturbances. Bring the medication container or a list of what was taken when seeking help.
Storing and handling guidelines
- Store at room temperature in a dry place, typically between 20 and 25 C (68 and 77 F). Short excursions between 15 and 30 C (59 and 86 F) are usually acceptable.
- Keep sildenafil in its original packaging away from direct heat and strong light.
- Please keep out of reach of children and animals. Do not use after the date labeled expiry on the pack.age.
Nontraditional remedies and comparisons
Treatment choice should match the underlying cause. Non-drug approaches and other medications that may be considered include:
- Flibanserin (Addyi): an oral daily medicine for premenopausal hypoactive sexual desire disorder in some countries; it is not widely licensed in the UK and requires monitoring and logging around alcohol and blood pressure.
- Bremelanotide (Vyleesi): an on-demand injectable for premenopausal HSDD available in some markets but not commonly supplied in the UK.
- Other PDE5 inhibitors: tadalafil and vardenafil act in a similar way to sildenafil. Their evidence base in women is limited compared with men, but they are sometimes discussed with prescribers.
- Hormonal treatments: topical vaginal estrogens can help local symptoms related to atrophy; systemic hormone therapy or carefully supervised testosterone therapy may be options in selected postmenopausal women.
- Non-drug measures: psychosexual therapy, couples counseling, pelvic floor physiotherapy and lifestyle changes (exercise, smoking cessation, alcohol moderation) can be effective alone or together with medication.
Discuss safety and likely benefits in partnership with your prescriber. For interpersonal dialogue and exchange related questions, see the support article. Potential mutual interaction effects.
UK market price measurement guide in GBP
Prices depend on brand, strength, pack size and whether the medicine is supplied privately or via the NHS. The figures below are approximate and intended as a guide only.
- Generic sildenafil (50 mg or 100 mg) obtained privately: roughly 0.20 to 1.00 GBP per tablet when bought in larger packs; smaller packs will cost more per tablet.
- Viagra Connect 50 mg (pharmacist supply for men): typically about 19 to 25 GBP for a 4-tablet pack, and about 35 to 45 GBP for an 8-tablet pack. Note this product is licensed only for male erectile dysfunction.
- Flibanserin (where available privately): estimated monthly private costs can range from a few hundred GBP and may exceed 300 GBP depending on supplier and consultations.
- Bremelanotide injections (private supply/imported): private per-dose costs might fall in a broad range, for example 60 to 120 GBP or more per injection, excluding clinic and import fees.
- Local hormonal treatments and topical products: prices vary widely by formulation and supplier.
Be cautious with online purchases. Only buy from UK-registered pharmacies and verify that the seller is regulated. For legal and safety details consult Access permissions besides the law's regulations in the UK.
Legal access policy and regulatory regime in the UK
- Prescription requirements: sildenafil is usually prescription-only in the UK. The 50 mg product Viagra Connect can be supplied by a pharmacist without a prescription but only for men after a pharmacist assessment.
- Off-label use: UK clinicians may prescribe medicines for signals indicating outside the licensed label when it is in the patient's best interest, provided informed consent is given and appropriate monitoring is arranged.
- Online purchases and imports: use pharmacies registered with the General Pharmaceutical Council (GPhC) and follow MHRA mentoring and guidance. Buying from unregulated websites or importing medicines without proper documentation may be illegal and unsafe.
- Assessment prior to supply: prescribers and pharmacists are responsible for check againing suitability, the give and take of interactions in a system describe exchanges between components. and safety before issuing sildenafil. Avoid driving or operating machinery if you experience dizziness after taking the medicine.
If you are uncertain about suitability or legal availability seek advice from your GP or a GPhC-registered pharmacist. For description of the mutual interaction refer to Potential hazards of interpersonal dialogue and exchange.
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