Nizagara 100 Mg Tablet

Description

What Is Nizagara 100 Mg Tablet?

Nizagara 100 Mg is a prescription oral medication used to treat erectile dysfunction (ED) in adult men. Each tablet contains 100 mg of Sildenafil Citrate — the same active ingredient as Viagra® (Pfizer) — formulated as a cost-effective generic alternative manufactured in India.

Erectile dysfunction is defined as the consistent inability to achieve or maintain a penile erection of sufficient rigidity and duration for satisfactory sexual intercourse. It is one of the most prevalent men’s health conditions globally, affecting an estimated 40% of men by age 40 and rising with advancing age. Nizagara 100 Mg addresses this condition by selectively inhibiting the enzyme phosphodiesterase type-5 (PDE5), enhancing the body’s natural erectile response during sexual stimulation.

Composition and Product Overview

How Nizagara 100 Mg Works (Mechanism of Action)

Penile erection is a haemodynamic event initiated by sexual stimulation. The nervous system triggers the release of nitric oxide (NO) from penile nerve endings and endothelial cells, activating guanylate cyclase to produce cyclic guanosine monophosphate (cGMP). Elevated cGMP relaxes smooth muscle in the cavernous arteries and sinusoids, permitting a large influx of blood that produces and sustains an erection.

The enzyme PDE5 naturally breaks down cGMP, limiting this erection response. Sildenafil citrate in Nizagara 100 selectively inhibits PDE5, protecting cGMP from degradation and prolonging smooth muscle relaxation during sexual arousal. Critically, sildenafil does not produce spontaneous erections — sexual stimulation must be present for the drug to work.

Sildenafil’s selectivity for PDE5 (approximately 10-fold over PDE6 and 80-fold over PDE1) underpins its tissue-targeted effect with a manageable safety profile at the standard 100 mg dose.

Uses and Clinical Evidence

Nizagara 100 Mg is indicated for erectile dysfunction across all recognised aetiologies:

• Vasculogenic ED — associated with hypertension, atherosclerosis, hyperlipidaemia, or diabetes (the most common organic cause)
• Neurogenic ED — following radical prostatectomy, pelvic surgery, spinal cord injury, or neurological disease
• Diabetic ED — affecting up to 75% of men with longstanding diabetes
• Psychogenic ED — from performance anxiety, depression, or relationship difficulties
• Mixed-aetiology ED — the most common pattern in men over 50

Clinical Effectiveness of Sildenafil 100 Mg

• Approximately 70–80% of men report improved erections with sildenafil 100 mg versus 22–25% on placebo in pivotal phase III trials
• Diabetic ED patients: 57–66% response rate — significantly higher than placebo
• Post-prostatectomy patients: 43–44% response rate after nerve-sparing surgery
• Psychogenic ED patients: up to 84% response rate
• Efficacy is sustained over 2–4 years of regular use without tolerance development

Dosage and How to Take Nizagara 100 Mg

Recommended Dosing

• Starting dose: 50 mg, approximately 60 minutes before sexual activity
• If 50 mg is insufficient: Increase to 100 mg (one Nizagara 100 tablet) — the approved maximum single dose
• If side effects are troublesome at 50 mg: Reduce to 25 mg
• Maximum frequency: One dose per 24-hour period
• With food: Can be taken with or without food; a high-fat meal delays peak absorption by up to 60 minutes
• Alcohol: Modest amounts are acceptable; heavy drinking can impair erectile function and increase hypotension risk

Dose Adjustments in Special Populations

• Elderly (≥65 years): Start at 25 mg; sildenafil clearance is reduced with age
• Severe renal impairment (CrCl <30 mL/min): Start at 25 mg
• Mild–moderate hepatic impairment: Start at 25 mg; not recommended in severe liver failure
• Concurrent strong CYP3A4 inhibitors (ritonavir, ketoconazole): Maximum 25 mg per 48 hours

Precautions Before Taking Nizagara 100 Mg

Erectile dysfunction can be an early warning sign of cardiovascular disease. Always inform your prescriber of:

• Any heart condition, previous heart attack, stroke, or arrhythmia
• High or low blood pressure
• Diabetes mellitus
• Liver or kidney disease
• Eye conditions, especially retinitis pigmentosa or a history of NAION
• Penile anatomical abnormalities (e.g. Peyronie’s disease)
• Conditions predisposing to priapism: sickle-cell anaemia, multiple myeloma, leukaemia
• All current medications — particularly blood pressure drugs, antifungals, and antiretrovirals

Contraindications

• Concurrent use of organic nitrate medicines in any form (GTN spray, isosorbide mononitrate, isosorbide dinitrate, amyl nitrite “poppers”) — co-administration causes severe, potentially fatal hypotension
• Concurrent use of riociguat (Adempas) or other sGC stimulators
• Known hypersensitivity to sildenafil citrate
• Severe hepatic impairment
• Recent myocardial infarction or stroke
• History of NAION
• Women, children, or anyone under 18 years of age

Side Effects of Nizagara 100 Mg

Common (≥1 in 100 patients)

• Headache — the most common effect (16–28% in clinical trials)
• Facial flushing — warmth and redness (10–18%)
• Nasal congestion
• Dyspepsia (indigestion)
• Dizziness

Less Common

• Visual disturbances — blurred vision, blue-green colour tint, increased light sensitivity (PDE6-related; transient)
• Back pain and myalgia

Rare but Serious (seek immediate emergency care)

• Priapism — erection lasting more than 4 hours; a urological emergency
• Sudden vision loss (NAION — stop the drug immediately)
• Sudden sensorineural hearing loss
• Severe allergic reaction — rash, facial swelling, difficulty breathing

Drug Interactions

• Nitrates: Absolutely contraindicated — severe hypotension
• Alpha-blockers (tamsulosin, doxazosin): Additive hypotension; use the lowest sildenafil starting dose with medical supervision
• CYP3A4 inhibitors (ritonavir, ketoconazole, erythromycin, cobicistat): Significantly increase sildenafil levels — dose reduction mandatory
• Antihypertensive agents: Additive blood-pressure lowering; monitor for symptoms
• Other PDE5 inhibitors: Never combine
• Grapefruit juice: Inhibits CYP3A4 in the gut wall, modestly increasing sildenafil absorption — avoid in large quantities

Nizagara 100 Mg vs Other Sildenafil and ED Treatments on IndoGenMed

Nizagara 100 Mg contains the same active ingredient and dose as branded Viagra 100 mg. Equivalent sildenafil 100 mg alternatives available on IndoGenMed include Cenforce 100 Mg Tablets (Sildenafil by Centurion), Fildena 100 Mg Tablets (Sildenafil by Fortune), Suhagra 100 Mg Tablets (Sildenafil by Cipla), and Silagra 100 Mg Tablets (Sildenafil by Cipla). For men preferring a tadalafil-based ED treatment with a longer 36-hour duration window, consider Vidalista 20 Mg Tablets (Tadalafil by Centurion) or Tadacip 20 Mg Tablets (Tadalafil by Cipla). For the fastest PDE5 inhibitor onset (as little as 15 minutes), Avana 100 Mg Tablets (Avanafil) is available.

Storage

Store Nizagara 100 Mg below 30°C in the original blister pack, away from moisture, direct sunlight, and heat. Keep out of reach of children. Do not use after the expiry date.

Frequently Asked Questions About Nizagara 100 Mg

Is Nizagara 100 the same as Viagra?

Yes, in terms of active ingredient and dose. Both contain sildenafil citrate 100 mg and work via identical pharmacological mechanisms. Viagra is Pfizer’s originator brand; Nizagara is a generic bioequivalent manufactured in India, typically at a lower price point.

How quickly does Nizagara 100 Mg take effect?

Most men experience effects within 30–60 minutes. Taking the tablet on an empty stomach, or with only a light meal, helps it work faster. The effect can last 4–6 hours, though individual variation exists.

Can I take Nizagara 100 Mg daily?

Nizagara 100 mg is an on-demand medication — taken only when needed, not as a daily treatment. No more than one dose should be taken in any 24-hour period. Men who require daily ED medication should discuss low-dose daily tadalafil (5 mg) options such as Vidalista 5 Mg or Cialis 5 Mg with their doctor.

What if Nizagara 100 Mg does not work?

Ensure you are taking it 60 minutes before sexual activity on an empty stomach, with adequate sexual stimulation. If repeated attempts fail, consult a doctor to investigate underlying vascular, hormonal, or psychological causes, or to discuss alternative treatments.

Is it safe with blood pressure medicine?

Sildenafil can be used with many antihypertensives, but there is a risk of additive blood pressure lowering — particularly with alpha-blockers and nitrates (the latter is absolutely contraindicated). Always disclose all blood pressure medications to your doctor before starting Nizagara 100.

References

• NHS UK. Sildenafil. Available at: nhs.uk/medicines/sildenafil-viagra/
• MedlinePlus. Sildenafil. Available at: medlineplus.gov
• Goldstein I, et al. (1998). Oral sildenafil in the treatment of erectile dysfunction. N Engl J Med. 338(20):1397–1404.
• U.S. FDA. Sildenafil (Viagra) Prescribing Information. Available at: fda.gov