Viagra (Sildenafil) Tablet: Uses, Side Effects, Dosage, Precautions and More

Viagra, the brand name for sildenafil, is one of the most well-known treatments for erectile dysfunction (ED). Since its approval by the FDA in 1998, Viagra has helped millions of men around the world regain their sexual function and confidence. This guide will explore everything you need to know about Viagra, including its uses, dosage recommendations, potential side effects, and other important considerations.

What is Viagra (Sildenafil)?

Viagra (sildenafil) is a medication primarily used to treat erectile dysfunction (ED). ED is the inability to achieve or maintain an erection sufficient for satisfactory sexual performance. Viagra works by increasing blood flow to the penis, which helps men achieve and maintain an erection when sexually stimulated.

How Does Viagra Work?

Viagra belongs to a class of drugs called phosphodiesterase type 5 (PDE5) inhibitors. It works by blocking the enzyme PDE5, which can restrict blood flow to the penis. By inhibiting this enzyme, Viagra enhances the effects of nitric oxide, a natural chemical the body produces to relax muscles in the penis. This increased blood flow to the penis helps to achieve and maintain an erection in response to sexual stimulation.

Uses of Viagra

Viagra is primarily used to treat erectile dysfunction. However, it is also prescribed for other conditions, such as:

1. Pulmonary Arterial Hypertension (PAH)

Sildenafil, the active ingredient in Viagra, is also marketed under the brand name Revatio to treat pulmonary arterial hypertension, a type of high blood pressure that affects the arteries in the lungs and the heart. It helps to relax and widen the blood vessels in the lungs, reducing the workload on the heart.

2. Raynaud’s Phenomenon

Some studies have shown that sildenafil can be effective in treating Raynaud’s phenomenon, a condition that causes some areas of the body—such as fingers and toes—to feel numb and cold in response to cold temperatures or stress.

Dosage Recommendations

Viagra is available in three dosages: 25 mg, 50 mg, and 100 mg. The appropriate dosage depends on various factors, including the patient’s age, health status, and severity of ED. Here are general guidelines:

Initial Dose

• The typical starting dose for most men is 50 mg taken approximately one hour before sexual activity.

Adjusting the Dose

• Based on effectiveness and toleration, the dose can be increased to a maximum recommended dose of 100 mg or decreased to 25 mg.

Frequency of Use

• Viagra should not be taken more than once per day. It is effective within 30 to 60 minutes of ingestion and its effects can last for up to four hours.

Administration

• Viagra should be taken orally with water. It can be taken with or without food, but a high-fat meal might delay its onset of action.

Potential Side Effects

While Viagra is generally safe and effective, it can cause side effects in some people. These side effects can range from mild to severe.

Common Side Effects

• Headache
• Flushing
• Upset stomach
• Nasal congestion
• Dizziness
• Visual changes (such as blue-tinted vision or blurred vision)

Less Common Side Effects

• Rash
• Back pain
• Muscle pain
• Nausea

Serious Side Effects

If you experience any of the following serious side effects, seek medical attention immediately:

• Priapism (a prolonged and painful erection lasting more than four hours)
• Sudden vision loss in one or both eyes
• Sudden hearing loss or ringing in the ears
• Chest pain, shortness of breath, irregular heartbeat

Allergic Reactions

In rare cases, an allergic reaction to Viagra can occur. Symptoms of an allergic reaction include difficulty breathing, swelling of the face, lips, tongue, or throat, and severe dizziness.

Who Should Not Take Viagra?

Certain individuals should avoid taking Viagra due to potential health risks. These include:

People Taking Nitrates

Viagra should not be used by individuals who are taking nitrate medications for chest pain or heart problems. The combination can cause a dangerous drop in blood pressure.

Patients with Severe Heart or Liver Problems

People with severe heart or liver conditions should consult their doctor before using Viagra, as it can exacerbate these conditions.

Recent Stroke or Heart Attack Survivors

Men who have recently had a stroke, heart attack, or have severe hypotension should avoid Viagra.

People with Certain Eye Conditions

Those with retinitis pigmentosa or non-arteritic anterior ischemic optic neuropathy (NAION) should be cautious, as Viagra can potentially worsen these conditions.

Interactions with Other Medications

Viagra can interact with certain medications, which may affect its efficacy or increase the risk of adverse effects. Inform your healthcare provider about all the medications you are taking, especially:

• Nitrates (for chest pain)
• Alpha-blockers (for high blood pressure or prostate problems)
• HIV protease inhibitors
• Certain antibiotics (such as erythromycin)
• Antifungal medications (like ketoconazole)
• Other ED medications

How to Take Viagra Safely

To maximize the benefits and minimize the risks associated with Viagra, follow these guidelines:

Consult a Healthcare Provider

Always consult with a healthcare provider before starting Viagra to ensure it is appropriate for your condition and to determine the correct dosage.

Follow Dosage Instructions

Take Viagra exactly as prescribed by your doctor. Do not take more or less than the recommended dose.

Avoid Alcohol and Recreational Drugs

Alcohol and recreational drugs can impair the effectiveness of Viagra and increase the risk of side effects.

Do Not Mix with Other ED Treatments

Avoid taking Viagra in conjunction with other ED medications unless advised by your healthcare provider.

Report Side Effects

If you experience any side effects, especially severe ones, contact your healthcare provider immediately.

Conclusion

Viagra (sildenafil) is a highly effective treatment for erectile dysfunction, offering relief to millions of men worldwide. By understanding its uses, proper dosage, potential side effects, and contraindications, you can use Viagra safely and effectively to enhance your sexual health and overall well-being. Always consult a healthcare professional before starting any new medication, including Viagra, to ensure it is appropriate for your individual health needs.

Also read: Methylprednisolone Tablet: Uses, Side Effects, Dosage, Precautions and More