Description
General Instructions
Side Effects
Uses
Safety advice
Concerns
Warnings
Dosage
Interactions
FAQs
Other Details
References
Disclaimer

Kamagra: Uses, Dosage & Safety Information

Safety warning: Kamagra is not approved by the FDA

Kamagra has not been approved by the US Food and Drug Administration. No US regulator has checked its quality, safety or effectiveness.

Medicines from unlicensed online sellers can contain too much or too little active ingredient, the wrong ingredient or none at all.
Such products may not work or may cause harm: the condition can go untreated, and unexpected side effects or dangerous interactions with your other medicines are possible.
Sildenafil can interact with nitrates found in some prescription drugs, such as nitroglycerin, and lower blood pressure to dangerous levels.
Talk to a doctor or pharmacist about approved treatment options. If you buy medicine online, check the pharmacy with the FDA’s BeSafeRx resource.
If you feel seriously unwell after taking it, call 911 and tell the doctors what you took.

Status checked: October 10, 2026. Sources: FDA BeSafeRx; FDA public notification.

Kamagra

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Kamagra

Sildenafil citrate

Kamagra is an unapproved sildenafil tablet from Ajanta Pharma. In the United States, sildenafil for erectile dysfunction is available only on prescription, as Viagra or an approved generic, through licensed pharmacies. Sildenafil must never be combined with nitrates in any form.

ActiveIngredient: Sildenafil citrate
DosageForm: Oral tablet
Dosage: 100 mg
Indications: Erectile dysfunction
Manufacturer: Ajanta Pharma Ltd
Storage: Store below 30°C
Drug Status: Not Approved

Drug Status: Not Approved

iMedix Editorial Team | Updated: 29.09.26

Description

What is Kamagra?

Kamagra is an unapproved sildenafil tablet from Ajanta Pharma; in the United States, sildenafil for erectile dysfunction is available only on prescription, as Viagra or an approved generic.

In the US the lawful route is a prescription

Approved sildenafil tablets carry prescription-only labelling, and approved generics are widely stocked. A product without an FDA application, such as this one, has no lawful US route.¹

Kamagra is sold as sildenafil citrate tablets by Ajanta Pharma and is the parent name of several Kamagra formats.² None of them has FDA labelling, an application or an NDC listing.³

The prescription step exists so that nitrate use, heart status and interacting medicines are checked before the first dose; FDA’s BeSafeRx programme explains how to recognise a licensed pharmacy website.

General Instructions

How to Take Kamagra

The product has no US directions

Nothing sold under this name comes with FDA-reviewed instructions, which is the gap the prescription route fills.³

How approved sildenafil is taken

Approved sildenafil is dispensed on prescription and usually taken at 50 mg about an hour before sex, from 25 to 100 mg, no more than once a day.¹

Getting sildenafil lawfully

In the US, ask a doctor or a licensed telehealth service for a prescription, and fill it at a state-licensed pharmacy. A licensed pharmacy website requires a prescription and shows a US address and phone number; the FDA BeSafeRx page explains how to check that a pharmacy is licensed. Keep the pharmacy label and product leaflet.¹

What not to do

Do not take sildenafil with nitrates, and do not use a product that arrives without a US prescription label. Do not combine it with another erectile dysfunction medicine.

Side Effects

What Are the Side Effects of Kamagra?

Approved sildenafil has well-documented common effects; for products outside the US supply chain, nothing confirms what a tablet contains.¹

Most Common Reactions in Trials
Frequency	Effect	Notes
Very common	Headache	16% vs 4% placebo
Common	Flushing	10% vs 1%
Common	Indigestion (dyspepsia)	7% vs 2%
Common	Nasal congestion	4% vs 2%

Source: ¹

Seek immediate medical attention if:

Chest pain or fainting after a dose
A painful erection lasting more than 4 hours
Sudden loss of sight or hearing

Uses

What is Kamagra Used For?

Claimed Use and Approved Status
Claim	Approved status
Lawful US supply of sildenafil	Prescription, filled at a state-licensed pharmacy
Sildenafil obtained without a prescription	Outside the US supply chain; no FDA review of the product

Source: ¹⁴

The indication itself is the same as approved sildenafil; what differs is that no one reviews the product, the dose or the patient before it is taken.¹

Safety Advice

Interactions Alcohol:

Unsafe

Alcohol adds to the blood-pressure-lowering effect of sildenafil, and this product supplies a fixed high strength whose content has not been verified.

Interactions Other Medications:

Unsafe

Nitrates and guanylate cyclase stimulators are absolute contraindications and are the first items on a pharmacist checklist. Ritonavir, strong CYP3A4 inhibitors and alpha-blockers each require a reduced dose or referral to a doctor, and none of those checks happens here.

Special Groups Pregnancy:

Unsafe

Not applicable — sildenafil has no approved use in women for this indication.

Special Groups Breastfeeding:

Unsafe

Not applicable to the stated indication.

Special Groups Elderly:

Unsafe

The labelled starting dose over 65 is 25 mg, and pharmacy supply caps any unsupervised sale at 50 mg. A fixed 100 mg tablet exceeds both.

Special Groups Children:

Unsafe

Not indicated at any age under 18; pharmacy supply is restricted to men over 18 for the same reason.

Effects on Activities Driving:

Unsafe

Dizziness and visual disturbance are documented and track the dose, which here is the maximum. Do not drive until the effect of a dose is known.

Effects on Activities Operating Machinery:

Unsafe

The same applies, for the same reason.

Regulatory status and dispensing

Kamagra has no FDA approval and no NDC listing, and is supplied through online sellers rather than US pharmacies.³

Approved sildenafil and its generics are prescription-only in the US and available through licensed pharmacies.⁵

Warnings

Critical Warnings for Kamagra Use

Nitrates

Sildenafil is contraindicated with nitric oxide donors such as organic nitrates or nitrites in any form.¹

Guanylate cyclase stimulators

Sildenafil is contraindicated with guanylate cyclase stimulators such as riociguat.¹

Sildenafil hypersensitivity

Contraindicated in known hypersensitivity to sildenafil or any tablet component.¹

Unverified content

Approved sildenafil is manufactured and labelled under FDA oversight; the strength and content of this product have not been reviewed.¹

See Interactions.

Dosage

Sildenafil Products
Formulation	Active Ingredients	Clinical Note
Kamagra tablets (as sold)	Sildenafil citrate	No FDA application; content unverified
Viagra and approved generics	Sildenafil citrate	Prescription-only; 25, 50 and 100 mg
Approved oral suspension	Sildenafil citrate	Revatio, for pulmonary arterial hypertension
Severe renal impairment	Sildenafil	Consider 25 mg to start
Hepatic impairment	Sildenafil	Consider 25 mg to start

Source: ¹²

Exceeding the dose

An accidental extra dose of approved sildenafil mainly intensifies its usual effects; single doses up to 800 mg were studied, and care is supportive.¹

Interactions

What Does Kamagra Interact With?

These interactions are what the prescription step is designed to catch.

Interactions by Severity
Interacting Substance	Effect and Risk	Severity	Documentation
Organic nitrates or nitrites in any form	Dangerous fall in blood pressure	Contraindicated	Excellent — labelled contraindication
Guanylate cyclase stimulators such as riociguat	Low blood pressure	Contraindicated	Excellent — labelled contraindication
Ritonavir	Much higher sildenafil exposure; no more than 25 mg in 48 hours	Major	Excellent — labelled interaction
Strong CYP3A4 inhibitors such as ketoconazole, itraconazole, erythromycin	Higher exposure; a 25 mg starting dose considered	Major	Good — labelled interaction
Alpha-blockers and other blood pressure medicines	Additive fall in blood pressure; start at 25 mg with alpha-blockers	Moderate	Good — labelled interaction

Source: ¹

FAQs

It has no FDA approval. Sildenafil for erectile dysfunction is available lawfully in the US only on prescription, as Viagra or an approved generic.

Through a doctor or licensed telehealth service and a state-licensed pharmacy; approved generics are widely available.

It requires a prescription, is licensed in your state and gives a US address and phone number; the FDA BeSafeRx page lists warning signs.

Both are sold as sildenafil, but only Viagra and approved generics have FDA-reviewed quality, strength and labelling.

No. Sildenafil is contraindicated with nitrates in any form.

Evidence and Reported Data

Evidence Scope

Established: sildenafil for erectile dysfunction is prescription-only in the US and available as approved generics. Unknown: the content and quality of tablets sold under this name.¹

FDA adverse event reports

No reports are filed under the name Kamagra at the 2026-07-30 data cut; cases involving sildenafil are recorded under the molecule or an approved brand, and a count of reports is not a rate.³

Who was this medicine studied in?

No one, under this name; all clinical data come from approved sildenafil.⁵

Where to report and verify

Routing to Official Registries
What you need	Where to go
Report a side effect	FDA MedWatch
Pregnancy-specific data	MotherToBaby
Full prescribing information	DailyMed
Verify a pharmacy website	FDA BeSafeRx · LegitScript

References

FDA Prescribing Information, Viagra (sildenafil citrate) tablets (Pfizer, NDA 020895) — Indications and Usage, Dosage and Administration, Contraindications, Warnings and Precautions, Adverse Reactions, Drug Interactions, Overdosage, Clinical Pharmacology
Label effective 2017-12-15 · Accessed 2026-09-28
Used for: prescription status, dosing, contraindications, reactions.
dailymed.nlm.nih.gov — DailyMed
Vendor and manufacturer product listings for Kamagra
Accessed 2026-09-29 · Accessed 2026-09-28
Used for: product identity and stated strengths only; not a clinical source.
accessdata.fda.gov — NDC Directory (no listing under this name)
openFDA — labelling, Drugs@FDA, NDC Directory and FAERS queries for Kamagra
Data cut 2026-07-30 · Accessed 2026-09-28
Used for: absence of any FDA record under this name.
open.fda.gov — openFDA
FDA National Drug Code Directory — approved sildenafil products
Directory current · Accessed 2026-09-28
Used for: current US marketing.
accessdata.fda.gov — NDC Directory
Drugs@FDA — approved sildenafil applications (Viagra NDA 020895 and generics)
Records · Accessed 2026-09-28
Used for: approved sildenafil products and their status.
accessdata.fda.gov — Drugs@FDA

Review cycle. Clinical review completed 28 September 2026. Next review due by 28 September 2027, or earlier if the labelling is revised.

Disclaimer

Disclaimer: The information on this site is provided for informational purposes only and is not medical advice. It does not replace professional medical consultation, diagnosis, or treatment. Do not self-medicate based on the information presented on this site. Always consult with a doctor or other qualified healthcare professional before making any decisions about your health.