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Viagra (Sildenafil) Buyer and Patient Handbook in South Africa

What is Viagra?

Viagra is a phosphodiesterase-5 (PDE-5) inhibitor tablet used to treat Erectile Dysfunction in adult men. It belongs to the class of oral agents that improve blood flow to the penis. The medication is approved by the South African Health Products Regulatory Authority (SAHPRA) and is available as a standard oral pill.

Who Should Use Viagra?

• Adult men experiencing difficulty achieving or maintaining an erection.
• Those with a medically diagnosed condition of erectile dysfunction.
• Men whose cardiovascular status has been evaluated and cleared for sexual activity.
• Individuals seeking a rapid-onset option (usually within 30-60 minutes).

How Does It Work?

Viagra blocks the enzyme PDE-5, which normally breaks down cyclic guanosine monophosphate (cGMP). By preserving cGMP, blood vessels in the penis relax, allowing more blood to fill the erectile tissue during sexual stimulation. This physiological response is similar to opening a floodgate that lets traffic (blood) flow freely when the signal (sexual arousal) is present. Viagra does not cause an erection without sexual excitement and does not affect libido.

Why Choose Viagra?

• Proven efficacy: Clinical trials consistently show successful erections in ≥ 80 % of users.
• Convenient dosing: Multiple strength options let you tailor the dose to your response.
• Established safety profile: Decades of worldwide use provide robust data on tolerability.

While off-label uses such as pulmonary arterial hypertension exist, they should only be considered under professional guidance.

Dosage, Administration, Lifestyle and Dietary Recommendations

Recommended Dosage

Begin with the lowest dose that provides satisfactory results. Adjust after at least one week of use.

How to Take

• Swallow the tablet whole with a full glass of water.
• Take it 30 minutes to 2 hours before sexual activity.
• The effect can last up to 4 hours; timing can be adjusted based on personal experience.
• Food does not markedly affect absorption, but a heavy, high-fat meal may delay onset.

Missed Dose

If you forget a dose and sexual activity is still anticipated within the next 4 hours, take it immediately. If more than 4 hours have passed, skip the missed tablet and resume the regular schedule. Do not double-dose.

Overdose

• Seek emergency medical care if you experience chest Pain, severe dizziness, or prolonged erection (> 4 hours).
• Contact the local emergency number (e.g., 10177 in South Africa) and inform them of a possible sildenafil overdose.

Special Populations

• Elderly (≥ 65 years): Start with 25 mg; monitor blood pressure and renal function.
• Renal or hepatic impairment: Lower initial dose (25 mg) and avoid doses > 50 mg unless advised.
• Women and children: Not indicated; safety not established.

Lifestyle & Diet

• Alcohol: Moderate consumption (≤ 2 standard drinks) is generally safe; excess may reduce effectiveness.
• Grapefruit juice: May increase sildenafil levels; avoid large amounts.
• Smoking: Quitting improves overall vascular health and may enhance medication response.

Precautions and Warnings

• Do not use Viagra if you have taken nitrates (e.g., nitroglycerin) within the past 24 hours.
• Caution in patients with uncontrolled hypertension, recent Heart Attack, or severe Heart Failure.
• Visual disturbances (blurred vision, blue-tinted perception) may occur; discontinue if persistent.
• Use the lowest effective dose to minimize side-effects.

Drug Interactions

Potential Side Effects

Common Side Effects

• Headache
• Flushing
• Nasal congestion
• Dyspepsia (indigestion)

Less Common Side Effects

• Back pain
• Muscle aches
• Dizziness

Serious Side Effects

• Prolonged erection (> 4 hours) - seek immediate medical help.
• Sudden loss of vision or hearing - stop using and contact a health professional promptly.

Who Should Avoid This Medication?

• Individuals using any form of nitrate medication.
• Men with a known allergy to sildenafil or any tablet component.
• Patients with severe cardiovascular disease (e.g., recent myocardial infarction).
• Those with retinal disorders such as retinitis pigmentosa.

Storage Instructions

• Keep at room temperature (15 °C-30 °C), away from moisture and direct sunlight.
• Store out of reach of children and pets.
• Do not use if the blister is damaged or the tablet is discolored.

Viagra Alternatives

Frequently Asked Questions

How long does Viagra stay in my system?

Viagra’s half-life is about 4 hours, so most of the drug is eliminated within 24 hours after a single dose.

Can I take Viagra with alcohol?

Moderate alcohol (up to two drinks) is usually safe, but large amounts can impair the response and increase the risk of side-effects.

What should I do if I experience a painful erection lasting more than 4 hours?

Treat this as an emergency: seek immediate medical attention to prevent permanent tissue damage.

Is it safe to use Viagra every day?

Daily use is approved for certain doses (e.g., 5 mg) for specific conditions; standard PRN dosing (as needed) is generally safe for most men.

Does food affect how well Viagra works?

A heavy, high-fat meal may delay the onset, but ordinary meals have minimal impact.

Can women use Viagra for sexual dysfunction?

Viagra is not approved for use in women; its safety and efficacy in females have not been established.

Will Viagra affect my blood pressure?

It may cause a modest, temporary reduction in blood pressure, especially when combined with other vasodilators.

Is there a risk of developing dependence on Viagra?

Physical dependence has not been demonstrated, but psychological reliance can occur; discuss concerns with a health professional.

Can I travel with Viagra on a flight?

Yes, but keep the medication in its original packaging with a copy of the prescription (if required) and store it in your carry-on to avoid temperature extremes.

How do I know which dose is right for me?

Start with the lowest effective dose (25 mg or 50 mg) and adjust based on efficacy and tolerability after a few attempts.

Glossary

• Phosphodiesterase-5 (PDE-5) inhibitor: A drug that blocks the PDE-5 enzyme, enhancing blood flow to the penis.
• cGMP (Cyclic guanosine monophosphate): A molecule that relaxes smooth muscle tissue, facilitating erection.
• Half-life: The time required for the concentration of a drug in the body to reduce by half.

Disclaimer

The information provided here is for general educational purposes only and does not replace professional medical advice. Off-label uses should be discussed with a qualified health professional. Our online pharmacy platform offers convenient access to approved medications, but it is the user’s responsibility to verify suitability, follow local regulations, and consult a doctor before initiating any treatment.