Viagra 100mg tablets help by stopping the action of an enzyme called phosphodiesterase type 5 (PDE5). By doing this, they allow more blood to flow into the penis when you’re sexually aroused, making it easier to get and keep a firm erection [1].
Viagra 100mg tablets are a prescription treatment for erectile dysfunction (ED) in men. They work by blocking the enzyme phosphodiesterase type 5 (PDE5), which increases blood flow to the penis during sexual stimulation. This enhanced circulation helps achieve and sustain a firm erection [1].
This dosage is often recommended for men who need a robust treatment solution or who haven’t responded to lower doses. One tablet is taken about 30 to 60 minutes before sexual activity, with effects lasting up to four hours [2].
As with all medications, Viagra 100mg tablets should be used under the guidance of a healthcare professional to ensure safety and efficacy [1].
After completing the quick online consultation, you can securely order Viagra 100mg tablets from courierpharmacy.co.uk for fast, discreet delivery [3].
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Viagra 100mg tablets are the gold standard for treating erectile dysfunction (ED) in men. This guide explains what Viagra 100mg tablets are, how they work, who they’re for, how to use them safely, what to expect, and how to get the best results.
Key takeaways:
Viagra 100mg tablets are a trusted prescription treatment for erectile dysfunction in men [1].
The active ingredient, sildenafil citrate, increases blood flow to help achieve and maintain an erection [2].
Effects usually start within 30–60 minutes and last up to 4–6 hours [3].
Always follow your doctor’s advice—Viagra 100mg tablets aren’t suitable for everyone and can interact with other medicines [1].
Side effects are usually mild, but it’s important to know what to expect and when to seek help [2].
Overview
Viagra 100mg tablets are a reliable, clinically tested solution for men with erectile dysfunction. Used safely for over two decades, they’ve helped millions regain sexual confidence [1].
The tablets are straightforward to use, with most men finding them effective within 30–60 minutes of taking a dose. Remember: sexual arousal is still needed for the medicine to work [2].
Viagra 100mg tablets aren’t an aphrodisiac and won’t increase your sex drive, but they can help you respond naturally to sexual stimulation. Always talk to your doctor before starting Viagra 100mg tablets to make sure it’s right for you [3].
Active Ingredient in Viagra 100mg Tablets
The active ingredient in Viagra 100mg tablets is sildenafil citrate—a phosphodiesterase type 5 (PDE5) inhibitor that relaxes blood vessels and increases blood flow to the penis [2].
What are Viagra 100mg tablets for?
Viagra 100mg tablets are prescribed to treat erectile dysfunction in adult men. ED is when you struggle to get or keep an erection that’s firm enough for sex [1].
Viagra 100mg tablets help by boosting blood flow to the penis, making it easier to achieve and maintain an erection when you’re sexually aroused. They do not cause an erection without stimulation [1].
How do Viagra 100mg tablets work?
Viagra 100mg tablets work by blocking an enzyme called PDE5, which normally breaks down a chemical (cGMP) that helps blood vessels relax. By blocking PDE5, sildenafil keeps cGMP levels higher, allowing blood to flow more easily into the penis when you’re aroused [2].
This process only happens when you’re sexually stimulated—Viagra 100mg tablets don’t work if you’re not in the mood. Effects usually begin within 30–60 minutes and can last for 4–6 hours [3].
Viagra 100mg tablets don’t cure ED or increase your sex drive, but they can help you enjoy a more satisfying sex life [4].
How to use Viagra 100mg tablets
Take one Viagra 100mg tablet around an hour before you plan to have sex. Swallow the tablet whole with a glass of water—don’t crush or chew it [2].
Viagra 100mg tablets work best on an empty stomach. If you’ve just had a heavy meal, it may take longer to kick in. Only take one tablet in 24 hours, and never increase your dose without your doctor’s advice [3].
If you miss a dose, don’t worry—just take it when you need it, but never double up. If you have any questions about how to use Viagra 100mg tablets, speak to your pharmacist or doctor [2].
Warnings and precautions with Viagra 100mg tablets
Viagra 100mg tablets are safe for most men, but not everyone can use them. Don’t take Viagra 100mg tablets if you’re using medicines called nitrates (often prescribed for chest pain), as this combination can cause dangerous drops in blood pressure [1].
Tell your doctor if you have heart problems, low blood pressure, liver or kidney disease, or a history of stroke [12], [13].
Always mention any other medicines or supplements you’re taking, as some can interact with Viagra 100mg tablets [2], [7], [15].
Never buy Viagra 100mg tablets from unregulated sources. Only use medicines prescribed by a qualified professional and dispensed from a registered pharmacy [4].
Patient suitability
Viagra 100mg tablets are prescribed for erectile dysfunction (ED) in men. Before starting treatment, healthcare providers assess your suitability through a questionnaire or consultation. Certain conditions may require further evaluation or render these tablets unsuitable.
Who should not take Viagra 100mg tablets
Men with the following conditions should not take Viagra 100mg tablets without additional evaluation from their doctor:
Taking nitrate medications (commonly used for chest pain)
Using or planning to use amyl nitrite ("poppers")
Using riociguat (used for high blood pressure in the lungs)
Having low or high blood pressure
Allergies or adverse reactions to previous ED treatments
A recent heart attack (within the past 6 weeks), angina, or other heart conditions
A history of strokes or transient ischemic attacks (mini-strokes)
Vision problems caused by circulation issues
Family history of rare degenerative eye diseases
Serious kidney or liver disease
Peyronie’s disease (curvature or deformity of the penis)
Conditions like leukemia, multiple myeloma, or sickle cell disease
Bleeding disorders (for example, hemophilia)
Active stomach ulcers (peptic or gastric ulcers)
Lactose intolerance (since these tablets contain lactose)
Additional risks with Viagra 100mg tablets
There is a rare risk of abnormal heart rhythms if Viagra 100mg tablets are taken with certain other medications. Always discuss any potential drug interactions with your healthcare provider.
Side effects associated with Viagra 100mg tablets
Most men tolerate Viagra 100mg tablets well, but some may experience side effects. The most common are headaches, flushing, indigestion, and a stuffy nose [2], [10], [11].
Less commonly, you might notice dizziness, blurred vision, or muscle aches. These side effects are usually mild and temporary, but if they bother you or don’t go away, talk to your doctor or pharmacist [2].
Rare but serious side effects include chest pain, a prolonged or painful erection (priapism), or sudden changes in vision or hearing. If you experience any of these, seek medical help immediately [2].
Common side effects of Viagra 100mg tablets
Headache
Flushing
Indigestion
Visual disturbances
Nasal congestion
Dizziness
These effects can usually be managed with simple remedies or over-the-counter medications.
Rare but serious side effects of Viagra 100mg tablets
In rare cases, more serious side effects may occur, such as:
Chest pain (which might signal a heart attack)
Sudden loss of vision
A prolonged and painful erection (priapism) that requires immediate medical attention, as it can cause permanent damage.
Drug Interactions with Viagra 100mg tablets
Viagra 100mg tablets can interact with certain medicines, especially nitrates, alpha-blockers, and some treatments for high blood pressure or HIV. These interactions can be dangerous and may require dose adjustments or extra monitoring [1].
Always tell your doctor or pharmacist about all the medicines and supplements you’re taking before starting Viagra 100mg tablets. Never mix Viagra with recreational drugs like “poppers” (amyl nitrate), as this can cause severe health risks [7].
If you’re unsure about any potential interactions, check with your healthcare provider before using Viagra 100mg tablets [2].
Effect: Can cause a severe drop in blood pressure that may be life-threatening
Note: Do not use sildenafil with any nitrate medication.
Alpha-Blockers
Examples: Doxazosin, tamsulosin
Effect: May cause a significant decrease in blood pressure, leading to dizziness or fainting
Note: Use only under strict medical supervision.
Antihypertensives
Examples: Amlodipine, enalapril
Effect: Can enhance blood pressure-lowering effects, increasing the risk of hypotension
Note: Regular blood pressure monitoring is advised.
Protease Inhibitors (for HIV)
Examples: Ritonavir, saquinavir
Effect: May raise sildenafil levels in the blood, heightening the risk of side effects
Note: A dose adjustment may be necessary.
Antifungal Medications
Examples: Ketoconazole, itraconazole
Effect: Can increase sildenafil levels in the bloodstream
Note: Dosage adjustments might be required.
Antibiotics
Examples: Erythromycin, clarithromycin
Effect: May elevate plasma levels of sildenafil, intensifying side effects
Note: Consult your healthcare provider for possible dose modifications.
Rifampin (for Tuberculosis)
Effect: Increases the metabolism of sildenafil, reducing its effectiveness
Note: A higher dose of sildenafil may be needed.
Other ED medications
Examples: Tadalafil, vardenafil
Effect: Combining these can raise the risk of severe side effects such as prolonged erection (priapism)
Note: Do not mix sildenafil with other ED treatments without medical advice.
Grapefruit juice
Effect: Can boost blood levels of sildenafil, enhancing its effects and side effects
Note: Avoid grapefruit juice while taking sildenafil.
Alcohol
Effect: May increase side effects like dizziness and further lower blood pressure [15]
Note: Limit alcohol consumption when using sildenafil.
Special considerations
Age and Health: Older adults and those with certain medical conditions may be more sensitive to drug interactions. Always share your complete medical history with your healthcare provider.
Monitoring: Regular monitoring by your doctor is recommended when using sildenafil with other medications.
Emergencies: Seek immediate medical attention if you experience severe side effects, such as chest pain, extreme dizziness, or a prolonged erection.
FAQs about Viagra 100mg tablets
Why do men experience erectile dysfunction?
Erectile dysfunction (ED), also known as impotence, is a common condition in men. It can be caused by several factors that generally fall into three categories:
Physical Causes
Cardiovascular Issues: Conditions like atherosclerosis, high blood pressure, and heart disease can reduce blood flow to the penis, making it hard to get an erection.
Diabetes: Elevated blood sugar levels can damage the blood vessels and nerves needed for an erection.
Obesity: Excess weight often leads to heart problems and diabetes, which are closely linked to ED.
Hormonal Imbalances: Low testosterone or other hormone issues can impact sexual desire and performance.
Neurological Disorders: Diseases such as Parkinson's, multiple sclerosis, or spinal cord injuries can disrupt nerve signals required for an erection.
Medications: Certain drugs, including those for high blood pressure and depression, may cause ED as a side effect.
Psychological Causes
Stress and Anxiety: High levels of stress or anxiety can hinder sexual performance.
Depression: Depression may lower sexual desire and contribute to ED.
Relationship Issues: Poor communication, unresolved conflicts, or a lack of intimacy can also be factors.
Lifestyle Factors
Smoking: Damages blood vessels and limits blood flow.
Excessive Alcohol: Heavy drinking can interfere with achieving an erection.
Drug Use: Recreational drugs can negatively affect sexual function.
Lack of Exercise: A sedentary lifestyle may lead to obesity and heart issues, increasing the risk of ED.
Seeking Help: If you experience ED, it's important to talk with your primary care doctor. They can evaluate your condition, run tests, and recommend the best treatment. For more information, consider consulting reliable medical resources or a healthcare professional.
Do Viagra 100mg tablets work every time?
It is suggested to try Viagra 100mg tablets at least four times to gauge their effectiveness before adjusting the dose or switching treatments. Keep in mind:
ED medications may not work every time or for everyone.
Adequate blood flow, proper arousal, and a healthy nervous system are key.
In cases of nerve damage from surgery or injury, these tablets may offer only partial relief, and other treatments (like injections or implants) might be needed.
For psychological causes of ED, counseling may be an effective addition or alternative to medication.
Work with your healthcare provider to identify the underlying cause and choose the most suitable treatment.
What are Viagra 100mg tablets used for?
Viagra 100mg tablets are used to treat erectile dysfunction in men [1]. They work by increasing blood flow to the penis during sexual stimulation, helping you achieve and maintain a firm erection. This higher-strength option is ideal for men needing a more robust treatment solution.
How should I take Viagra 100mg tablets?
Timing: Take one tablet about one hour before planned sexual activity.
Administration: Swallow the tablet whole with water.
Food Consideration: It can be taken with or without food, although a high-fat meal may delay its effect.
How often can I take Viagra 100mg tablets?
Use Viagra 100mg only once per day.
Allow at least 24 hours between doses.
How long does it take for Viagra 100mg tablets to work?
Sildenafil usually begins to work within 30 to 60 minutes [3].
Its effects can last up to four hours, though this does not mean an erection will persist for the entire period.
What are the possible side effects of Viagra 100mg tablets?
A prolonged, painful erection (priapism) that requires immediate medical attention to avoid permanent damage
Always review the patient information leaflet and consult your healthcare provider if you have concerns.
Can I take Viagra 100mg tablets with alcohol?
It is advisable to avoid excessive alcohol consumption while taking Viagra, as it can increase the likelihood of side effects and reduce the medication’s effectiveness [15].
Are there any medications that interact with Viagra 100mg tablets?
Yes, Viagra 100mg tablets can interact with various medications, which might affect how well sildenafil works or increase side effects. Be sure to inform your healthcare provider about all medications and supplements you take, including:
Nitrate Medications: (e.g., nitroglycerin, isosorbide dinitrate, isosorbide mononitrate) – can cause a dangerous drop in blood pressure.
Alpha-Blockers: (e.g., doxazosin, tamsulosin) – may lead to significant blood pressure drops.
Antihypertensives: (e.g., amlodipine, enalapril) – can enhance blood pressure-lowering effects.
Protease Inhibitors: (e.g., ritonavir, saquinavir) – may raise sildenafil levels.
Antifungal Medications: (e.g., ketoconazole, itraconazole) – can increase blood levels of sildenafil.
Rifampin: (for tuberculosis) – can reduce sildenafil’s effectiveness by increasing its metabolism.
Other ED Medications: (e.g., tadalafil, vardenafil) – combining these can heighten the risk of severe side effects like priapism.
Grapefruit Juice: – can raise sildenafil levels in the blood.
Alcohol: – may further lower blood pressure and increase side effects.
Can I take Viagra 100mg if I have a heart condition?
If you have a heart condition, consult your doctor before using Viagra, as it may not be safe for people with certain heart problems.
What should I do if I miss a dose of Viagra 100mg?
Since Viagra is taken as needed, missing a dose is unlikely. Do not take a double dose to make up for a missed one.
Can women take Viagra 100mg tablets?
Viagra is not approved for use in women. There are alternative treatments for female sexual dysfunction.
What should I do if I experience a prolonged erection after taking Viagra 100mg?
If you have an erection that lasts longer than four hours, seek immediate medical attention. This condition, known as priapism, can cause permanent damage if not treated promptly.
Can I take Viagra 100mg tablets with other ED medications?
Do not combine Viagra with other ED treatments without consulting your doctor, as doing so can increase the risk of severe side effects.
How should I store Viagra 100mg tablets?
Store the tablets at room temperature, away from moisture and heat, and keep them in their original packaging until you are ready to use them.
What should I do if I voerdose on Viagra 100mg tablets?
If you suspect an overdose, seek emergency medical attention immediately. Overdose symptoms may include severe dizziness, fainting, or a prolonged erection.
What are PDE5 inhibitors?
PDE5 inhibitors are a class of medications that block the enzyme phosphodiesterase-5 (PDE-5), which regulates blood flow in the penis. By preventing the breakdown of cGMP, these drugs increase blood flow during sexual arousal, helping to achieve and maintain an erection. Besides treating ED, they are also used for conditions like pulmonary arterial hypertension (PAH). Common examples include sildenafil (Viagra), tadalafil (Cialis), vardenafil (Levitra), and avanafil (Stendra). Although generally well tolerated, these medications can cause side effects and work best when combined with lifestyle changes and counseling.
Recreational misuse of Viagra 100mg tablets
While Viagra is effective for treating ED when used as prescribed, some individuals misuse it for recreational purposes without proper medical guidance. Misusing Viagra in this way can increase the risk of serious side effects. Always use Viagra as directed by your healthcare provider and follow the prescribed dosage and frequency.
What is Viagra Connect?
Viagra Connect is the over-the-counter version of Viagra, enabling men to purchase sildenafil without a prescription. Developed by Pfizer, it is recognized by its distinctive blue tablets and works similarly to standard Viagra by increasing blood flow to the penis during sexual stimulation. Viagra Connect is taken orally and usually starts working within 30 to 60 minutes, with effects lasting up to four hours [6]. Always follow the label instructions and consult a healthcare provider if you have any concerns.
What are alternative treatments for Erectile Dysfunction?
Several treatment options are available for ED, including:
Oral medications like sildenafil (Viagra), tadalafil (Cialis), vardenafil (Levitra), and avanafil (Stendra)
Topical treatments
Penile injections
Vacuum erection devices (penis pumps)
Surgical procedures such as penile implants
Counseling and lifestyle modifications
Compounded erectile dysfunction oral patches
Discuss these options with your healthcare provider to determine the best treatment plan for your needs.
