Eriacta 100 Mg

Last Updated on 09/11/2026 ✔ Medically Reviewed by Dr. Arjun Srivastav

If you’ve been dealing with erectile dysfunction (ED), you already know how frustrating it can be not just physically, but emotionally too. It affects confidence, relationships, and even how you feel about yourself. That’s where Eriacta 100 mg comes in. It’s a generic oral medication that helps men get and keep an erection firm enough for sex. Made by Ranbaxy (now part of Sun Pharmaceutical Industries), it contains sildenafil citrate the exact same active ingredient found in Viagra.

What makes Eriacta appealing is that it gives you the same clinically proven results as the big-name brand, but at a fraction of the price. In this guide, we’ll walk you through everything you need to know about Eriacta 100 mg what it does, how it works, how to use it safely, the side effects to watch for, and how to make sure you’re buying the real thing.

What Is Eriacta 100 mg?

Eriacta 100 mg is a tablet used by men to treat erectile dysfunction. Each tablet contains 100 mg of sildenafil citrate, which belongs to a class of drugs called PDE5 inhibitors the same family that includes Viagra, Cialis, and Levitra. If you’ve heard of any of those, you already have a sense of what Eriacta does.

The tablets are blue and diamond-shaped, and they look a lot like Viagra that’s no coincidence. Eriacta is what’s called a therapeutically equivalent generic. In plain terms, that means it contains the same active ingredient, works the same way, and carries the same safety profile as branded Viagra. The main difference? You’re not paying for the brand name, so it costs significantly less.

It’s manufactured by Ranbaxy Laboratories, which merged into Sun Pharmaceutical Industries back in 2015. Sun Pharma is one of the largest and most respected pharmaceutical companies in the world, so you’re getting a product made under strict quality standards.

What Is Eriacta 100 mg Used For?

The Main Use: Erectile Dysfunction

Eriacta 100 mg is prescribed for adult men who have trouble getting or keeping an erection. ED can happen for all sorts of reasons stress, health conditions, age, medication side effects and Eriacta helps by improving blood flow to the penis so that, with sexual stimulation, an erection can happen naturally.

A Note on Off-Label Uses

Because Eriacta contains sildenafil, people sometimes wonder if it treats other conditions. Sildenafil is also used for pulmonary arterial hypertension (PAH) under the brand name Revatio but Eriacta is not formulated or dosed for that. Don’t use Eriacta for anything other than ED unless a doctor specifically tells you to.

What Eriacta Does NOT Do

It’s worth clearing up a few common misconceptions:

• It won’t treat ED permanently it treats the symptom each time you take it.
• It won’t boost your libido or sex drive you still need to feel aroused.
• It doesn’t protect against sexually transmitted infections.
• It’s not an aphrodisiac, and it’s not for women or anyone under 18.

How Does Eriacta 100 mg Work?

Eriacta 100 mg works by inhibiting the PDE5 enzyme.

Normally, sexual stimulation triggers the release of nitric oxide in the erectile tissue. This promotes the formation of cGMP, which relaxes smooth muscle and allows more blood to enter the penis. PDE5 naturally breaks down cGMP.

Sildenafil slows this breakdown by PDE5 inhibitors in. This helps maintain the blood-flow response needed for an erection during sexual stimulation.

How to Take Eriacta 100 mg

Taking Eriacta is straightforward, but a few simple habits will help you get the most out of it.

The basics:

1. Swallow one tablet whole with a glass of water. Don’t crush, chew, or break it.
2. Take it about 30 to 60 minutes before you plan to have sex.
3. Remember you still need sexual stimulation for it to work.
4. Never take more than one tablet in a 24-hour period.

Timing matters. Most men find it kicks in within 30 to 60 minutes, though it can vary. Giving yourself an hour is a safe bet, especially the first few times you use it. For a more detailed guide on timing and best practices, check out when and how you should take sildenafil.

Food can slow things down. You can take Eriacta with or without food, but if you’ve just eaten a heavy, greasy meal, expect it to take longer to work. On an empty stomach, it absorbs faster and gets to work sooner.

What to skip: Don’t split the tablet to make smaller doses unless your doctor tells you to. Don’t mix it with other ED pills. And don’t take it more than once a day.

Storage: Keep it at room temperature somewhere between 15°C and 30°C (59°F–86°F) away from moisture and heat, and well out of reach of kids and pets.

Eriacta 100 mg Dosage

Getting the dose right matters for both safety and results. Always go by what your doctor prescribes.

The usual starting point for sildenafil is 50 mg, taken as needed. But Eriacta 100 mg tablets contain the full 100 mg strength, which may be your starting dose if you’ve used sildenafil before at a lower strength without getting the results you needed, or if your doctor thinks you need the stronger dose.

When adjustments make sense:

• If 100 mg feels too strong or causes bothersome side effects, your doctor may lower your dose.
• If it’s not working well enough, don’t take more talk to your doctor instead.
• If you’re 65 or older, or you have kidney or liver issues, your doctor may suggest starting lower, since your body clears the drug more slowly.
• If you take certain medications (like ritonavir, ketoconazole, or erythromycin), you may also need a reduced dose.

Missed a dose? No worries Eriacta is taken as needed, so there’s no schedule to keep up with. Just take it before you plan to be sexually active.

Overdose: Taking more than 100 mg in a day raises your risk of serious problems dangerously low blood pressure, fainting, or a prolonged, painful erection. If that happens, get emergency help right away.

How Long Does Eriacta 100 mg Take to Work?

Sildenafil commonly starts working within about 30 to 60 minutes, although the timing can vary from person to person.

Taking Eriacta after a heavy or high-fat meal may delay how quickly the medicine takes effect. Individual factors, including metabolism, other medicines and general health, can also affect the response.

Remember that taking the tablet does not automatically produce an erection. Sexual stimulation is required for sildenafil to support the erectile response.

If the expected effect does not occur, do not take another tablet during the same 24-hour period without medical advice.

How Long Does Eriacta 100 mg Last?

Eriacta 100 mg generally stays effective for about 4 to 6 hours. But let’s be clear about what that means it doesn’t give you a nonstop erection for six hours. Instead, it makes it easier to get an erection during that window whenever you’re aroused. For a deeper look at how long the effects last, how long sildenafil lasts.

Here’s how it plays out in real life:

• You can try more than once during that 4–6 hour period.
• After you ejaculate, the erection goes down normally.
• With more stimulation, you may be able to get another erection within that same window.
• After 4–6 hours, the sildenafil levels in your blood drop below the effective point.

What affects how long it lasts:

• Higher doses tend to last a little longer, but 100 mg is the daily cap.
• Slower metabolism (common with age) can extend the window.
• Liver or kidney problems can slow elimination, prolonging the effect.
• A heavy meal can reduce how strong the peak effect feels.

If you’re looking for something that lasts longer up to 36 hours tadalafil-based options might suit you better. That’s a conversation worth having with your doctor.

Eriacta 100 mg Side Effects

Most men take Eriacta without any major problems, but like any medication, it can cause side effects. The good news is that most of them are mild and go away on their own as the drug wears off. A few, though, are serious and need immediate attention. For a complete overview of possible reactions, check out this detailed guide on the side effects of sildenafil.

Eriacta 100 mg Drug Interactions

Eriacta can interact with other medications, and some of those interactions are dangerous. That’s why it’s so important to tell your doctor about everything you take prescriptions, over-the-counter drugs, supplements, and even recreational substances.

Nitrates

This is the big one. Nitrates are used to treat chest pain (angina) and certain heart conditions. Common examples are nitroglycerin, isosorbide mononitrate, and isosorbide dinitrate. Amyl nitrite known recreationally as poppers is also in this category.

Mixing Eriacta with nitrates can cause a dangerous, even life-threatening drop in blood pressure. This combination is absolutely off-limits. If you take nitrates in any form, you cannot use Eriacta.

Riociguat

Riociguat is used for pulmonary arterial hypertension. Pairing it with Eriacta can also cause dangerously low blood pressure, so this combination is strictly contraindicated.

Alpha-Blockers

These are prescribed for high blood pressure and enlarged prostate (BPH). Examples include doxazosin, tamsulosin, terazosin, and prazosin. Taking them with Eriacta can cause a noticeable drop in blood pressure especially when you stand up, leading to dizziness or fainting. If you need both, your doctor may lower your Eriacta dose and suggest spacing them out during the day.

Other ED Medicines

Don’t mix Eriacta with other ED treatments not Viagra, Cialis, Levitra, Spedra, or alprostadil injections and suppositories. Combining them raises the risk of priapism and serious blood pressure changes.

Blood Pressure Medicines

Eriacta lowers blood pressure a little on its own. When you add other blood pressure medications, that effect can add up. Your doctor may need to adjust doses or keep a closer eye on you.

Medicines That Affect Sildenafil Levels

Some drugs change how your body breaks down sildenafil, which can either raise or lower its levels in your blood:

• Drugs that increase sildenafil levels (raising side-effect risk): ritonavir and other HIV protease inhibitors, ketoconazole and itraconazole (antifungals), erythromycin and clarithromycin (antibiotics), and grapefruit or grapefruit juice.
• Drugs that decrease sildenafil levels (making it less effective): rifampin, carbamazepine, and phenobarbital.

If any of these are part of your routine, your doctor can help adjust your dose or find an alternative.

Eriacta 100 mg Warnings and Precautions

Before taking Eriacta 100 mg, tell your healthcare professional about your medical history and current medicines.

Extra caution may be required if you have:

• Heart or cardiovascular disease
• Low blood pressure
• Uncontrolled high blood pressure
• Liver problems
• Kidney problems
• A history of stroke or heart attack
• Certain eye or vision disorders
• A condition that may increase the risk of prolonged erections
• A penile deformity or condition affecting the shape of the penis
• Blood disorders that may affect erections

Sildenafil may also cause dizziness or visual disturbances in some people. Avoid driving or operating machinery if you experience symptoms that affect your ability to do so safely.

Sexual activity itself can place additional strain on the heart. If you have been advised to avoid sexual activity because of a cardiovascular condition, discuss sildenafil with your doctor before using it.

Who Should Not Take Eriacta 100 mg?

Eriacta isn’t right for everyone. Here’s who should avoid it:

Do not take Eriacta if you:

• Take nitrates in any form the risk of a fatal blood pressure drop is real.
• Take riociguat or similar medications for pulmonary hypertension.
• Have had a recent heart attack or stroke (within the past six months), severe heart failure, or severe liver problems.
• Have had an allergic reaction to sildenafil or any ingredient in Eriacta.

Use caution and talk to your doctor first if you:

• Have uncontrolled high or low blood pressure.
• Have a history of priapism, or conditions like sickle cell anemia, leukemia, or multiple myeloma.
• Have a penile deformity such as Peyronie’s disease.
• Have a bleeding disorder or active peptic ulcer.
• Have retinitis pigmentosa or another hereditary eye disorder.
• Have severe kidney problems you may need a lower dose.
• Take alpha-blockers or blood pressure medications.

Not for:

• Women Eriacta is not approved for women.
• Anyone under 18.
• Anyone using “poppers” (amyl or butyl nitrite).

If you’re not sure where you fall, the safest move is to talk to a doctor before trying it.

Eriacta 100 mg vs Sildenafil

People often ask how Eriacta compares to sildenafil. The honest answer is that they’re essentially the same thing but let’s break down the nuances.

The core similarity: Both contain sildenafil citrate as the active ingredient. They work the same way, produce the same effects, and carry the same side-effect profile. Eriacta is simply a generic version of sildenafil.

Here’s a quick comparison:

Why people choose Eriacta: It’s much more affordable, contains the same proven active ingredient, comes from a trusted manufacturer, and is widely available.

Why some stick with branded Viagra: Familiarity, brand trust, or simply personal preference. But medically speaking, the results are the same.

The bottom line: If you want an effective, affordable ED treatment, Eriacta 100 mg gives you the same benefits as branded sildenafil without the premium price tag.

Where to Buy Eriacta 100 mg

Eriacta 100 mg is available to purchase online through AustraliaRxMeds. You can check the Eriacta 100 mg product page for its available pack information and ordering details. Before purchasing, make sure sildenafil is suitable for you, particularly if you take medicines for heart conditions, blood pressure, or other health problems.