Sildalis (Sildenafil Citrate 100 mg + Tadalafil 20 mg) – Patient Information (Australia)

Sildalis is a combination medicine containing two active ingredients: sildenafil citrate 100 mg and tadalafil 20 mg. It is used to help men with erectile dysfunction (ED) achieve and maintain an erection during sexual activity.

This page explains how Sildalis works, how it’s typically taken, safety considerations, interactions, and practical tips. Always follow the directions provided by your healthcare professional and read the product packaging carefully.

Key product information

How Sildalis works (mechanism of action)

Sildalis contains two medicines that both belong to the phosphodiesterase type 5 (PDE5) inhibitor group: sildenafil and tadalafil.

During sexual arousal, the body releases nitric oxide, which increases levels of cyclic GMP (cGMP). cGMP relaxes smooth muscle in blood vessels, improving blood flow to the penis—supporting erection.

PDE5 inhibitors block the enzyme PDE5 that breaks down cGMP. By inhibiting PDE5, both sildenafil and tadalafil help maintain higher cGMP levels, supporting improved erectile response to sexual stimulation.

• Sildenafil: a PDE5 inhibitor that typically has a faster onset for many men.
• Tadalafil: a PDE5 inhibitor with a longer duration of action compared with sildenafil.

Important: PDE5 inhibitors do not cause erections automatically. Sexual stimulation is still required.

Pharmacokinetics (how the body processes the medicine)

“Pharmacokinetics” describes absorption, distribution, metabolism, and elimination. While individual responses vary, the following outlines typical characteristics of each ingredient:

Sildenafil (citrate)

• Absorption: absorbed after oral dosing; peak levels generally occur within about 1–2 hours in many users.
• Metabolism: mainly metabolised in the liver (notably via CYP enzymes).
• Elimination: excreted primarily via urine and faeces after metabolism.

Tadalafil

• Absorption: absorbed after oral dosing; peak levels often occur within a few hours for many users.
• Duration: tends to last longer than sildenafil, meaning effects may be present for a longer window.
• Metabolism: metabolised primarily in the liver (also involving CYP pathways).
• Elimination: excreted mainly through faeces and urine after metabolism.

Because Sildalis combines both medicines, onset and duration may reflect the combined action of sildenafil and tadalafil. Factors such as age, liver and kidney function, other medicines, and food can affect how you experience the dose.

Typical use and indications

Sildalis is used to treat erectile dysfunction (ED).

ED is the persistent inability to achieve or maintain an erection sufficient for satisfactory sexual performance. Sildalis helps improve erectile function during sexual activity.

It’s intended for men who have ED and who can safely use PDE5 inhibitors based on their health profile and medications.

Before you take Sildalis: safety highlights

PDE5 inhibitors may be inappropriate or unsafe for some people. Do not take Sildalis if you have any contraindications. Seek medical advice if you are unsure.

• Nitrates (for chest pain/angina): combining nitrates with PDE5 inhibitors can cause a dangerous drop in blood pressure.
• Riociguat: can also interact with PDE5 inhibitors and cause significant hypotension.
• Severe cardiovascular conditions: you may need assessment before sexual activity and ED treatment.
• Some eye conditions: if you have a history of non-arteritic anterior ischaemic optic neuropathy (NAION), discuss with a healthcare professional.
• Use caution with other blood-pressure-lowering medicines, and if you have low blood pressure.

If you experience chest pain, fainting, severe dizziness, or an erection lasting longer than 4 hours, seek urgent medical care.

Dosing (general guidance)

Sildalis is a fixed-dose combination tablet (sildenafil citrate 100 mg + tadalafil 20 mg). Because the dose is high compared with many single-ingredient products, it’s important to use it only as directed by a healthcare professional.

Do not exceed the recommended frequency. Taking more than advised increases the risk of side effects and complications.

• Typical frequency: follow your prescriber’s directions and the instructions on your product packaging.
• Timing: see the “When to take it” section below for practical guidance.
• Missed dose: if you miss a planned dose, wait until the next appropriate time—do not take extra to “catch up.”

People vary in how strongly and quickly these medicines work. If your erections are not improved or you experience intolerable side effects, it may be safer to discuss an alternative approach rather than adjusting independently.

When to take Sildalis (timing for sexual activity)

PDE5 inhibitors are most helpful when taken with enough time before planned sexual activity, while allowing for individual differences.

• General timing for sildenafil: often taken prior to sex, with onset commonly within about 30–60 minutes for many men.
• General timing for tadalafil: often provides a longer window of responsiveness, meaning it may work over an extended period.
• Combined product: the practical result is that you may have a broader time range compared with sildenafil alone.

A common practical approach is to plan dosing earlier in the evening and allow time for the medicine to take effect. If you notice no benefit, timing or underlying factors may need review.

If you are unsure, ask a healthcare professional about the safest timing for your situation and health conditions.

Food interactions (including fatty meals)

Food—especially fatty meals—may affect the absorption and how quickly you feel the effect. For many PDE5 inhibitors, a heavy or high-fat meal can delay onset.

• If you ate a large, fatty meal, you may need to allow more time before sex.
• If you notice slower onset, consider taking the dose after a lighter meal next time (if appropriate for you).

Alcohol and certain medicines can also affect performance and blood pressure—see below for important interaction information.

Alcohol and other medicine interactions

Alcohol

Alcohol can worsen ED by affecting blood flow, nerve signals, and erection quality. It can also increase the likelihood of side effects such as dizziness and headache.

• Limit alcohol where possible, especially when first trying Sildalis.
• Be cautious with higher alcohol intake, as it can increase the risk of low blood pressure symptoms.

Common medicine interactions

PDE5 inhibitors can interact with several medicines, particularly those affecting blood pressure or the enzymes that metabolise PDE5 inhibitors. Interaction risk can be increased with strong liver enzyme inhibitors or certain antibiotics/antifungals.

• Nitrates (e.g., glyceryl trinitrate/GTN) and nitrite medicines: combination can cause dangerous hypotension.
• Riociguat: not recommended with PDE5 inhibitors due to BP lowering effects.
• Alpha-blockers (for prostate symptoms or blood pressure): may cause dizziness or low blood pressure, especially at start or dose changes.
• Strong CYP3A4 inhibitors (some HIV medicines, antifungals, macrolide antibiotics): can increase PDE5 inhibitor levels and side effects.
• Blood pressure-lowering medicines: additive BP effects may occur.

This is not a complete list. Tell your healthcare professional or pharmacist about all medicines you take, including prescription medicines, over-the-counter products, vitamins, herbal supplements, and recreational substances.

Safety profile: side effects and what to watch for

Like all medicines, Sildalis can cause side effects. Many are mild and improve as your body adapts, but some require urgent care.

Common side effects

• Headache
• Flushing (warmth, redness)
• Indigestion / nausea
• Nasal congestion or blocked nose
• Dizziness or light-headedness
• Back pain or muscle aches (more typical of tadalafil)

Less common but important side effects

• Visual disturbances (e.g., blurring)
• Changes in hearing (rare)
• Prolonged erection (priapism) or painful erection lasting too long

Seek urgent help immediately if

• An erection lasts for more than 4 hours
• You develop chest pain, fainting, or severe dizziness
• There is sudden vision loss or sudden hearing changes

Your risk of side effects can be influenced by age, other medical conditions, and medicines you take. If side effects are severe or persistent, consult a healthcare professional.

Practical use tips for better results

• Allow time for effect: don’t rush—PDE5 inhibitors may take some time to work.
• Use with sexual stimulation: arousal is necessary for erections to occur.
• Start responsibly: when first trying Sildalis, consider a lower-stress setting and avoid driving if you feel dizzy.
• Manage stress and performance anxiety: psychological factors commonly contribute to ED.
• Consider lifestyle factors: regular exercise, smoking cessation, and healthy weight can improve ED over time.
• Stay hydrated: dehydration and alcohol can increase dizziness.

If you find Sildalis is not helping, it may be due to timing, interacting medicines, or underlying causes (such as diabetes, high blood pressure, cardiovascular disease, or hormonal factors). Discussing the cause can improve the chance of success with the right option.

Alternative options (other ways to treat ED)

There are several ED treatments available. Alternatives may offer different dosing schedules, onset times, or side effect profiles. Depending on your health history, another option may be safer or more suitable.

Other PDE5 inhibitors

• Sildenafil (single ingredient products)
• Tadalafil (single ingredient products)
• Vardenafil and Avanafil (where available)

Other approaches

• Vacuum erection devices
• Penile injections (used under medical guidance)
• Intraurethral therapy (where appropriate)
• Counselling/sex therapy for performance anxiety-related ED
• Address contributing health issues (diabetes, cardiovascular risk, low testosterone if indicated)

If the fixed combination strength of Sildalis is too strong for you, or if interactions make it unsuitable, healthcare professionals may recommend a different PDE5 inhibitor or non-drug options.

Market and legal context for Australia

In Australia, ED medicines are regulated under the national medicines framework. Availability depends on product approval status, scheduling, and whether the medicine is supplied in a lawful way through authorised channels.

When buying any ED medicine online, it’s important to ensure the supplier is legitimate and provides:

• Clear product identification and active ingredient content
• Authorised distribution and appropriate packaging
• Transparent shipping and return policies
• Compliance with Australian regulatory requirements

If you are unsure about a product’s status or your eligibility to use it, consider speaking with a pharmacist or healthcare professional.

Recent guidance and updates (general points)

While specific recommendations can change, common ongoing guidance for ED medicines in Australia typically includes:

• Awareness of nitrate interactions and BP risks
• Careful review of cardiovascular health before using ED medicines
• Attention to drug–drug interactions with strong enzyme inhibitors
• Reporting rare but serious events such as priapism or sudden vision/hearing changes promptly

Guidance is often reinforced through pharmacy counselling and updated product information. Always check the most current information on the packaging and through trusted Australian healthcare sources.

Delivery and availability (Australia)

Availability varies by supplier and product jurisdiction. When an online pharmacy offers Sildalis, typical customer considerations include:

• Order processing time (often 1–2 business days, depending on stock)
• Delivery timeframes which vary by state and courier service
• Packaging: discreet, secure packaging is commonly used for privacy
• Tracking: many suppliers provide tracking updates
• Customer support: assistance with delivery questions and product information

If you have specific delivery requirements (e.g., rural delivery, timing constraints), contact the pharmacy support team before ordering. Ensure your address details are correct to avoid delays.

FAQ about Sildalis

1) How quickly will Sildalis work?

Many men notice effects within about 30–60 minutes for sildenafil, but individual response varies. Tadalafil can provide a longer window. Food (especially heavy, fatty meals) and other medicines may delay or change the onset.

2) Do I need to be sexually aroused for Sildalis to work?

Yes. PDE5 inhibitors help the body respond to sexual stimulation; they do not automatically cause an erection.

3) Can I take Sildalis every day?

The product directions (and safety considerations) depend on your situation. Because Sildalis is a fixed-dose combination, do not assume daily use is appropriate. Follow the recommended frequency on the product information or provided by a healthcare professional.

4) What should I do if it doesn’t work for me?

If you don’t get the expected result, avoid repeating doses too soon. Consider timing (including meals), alcohol intake, and whether you may be taking interacting medicines. Seek advice to review underlying causes of ED and the safest treatment option for you.

5) Is it safe with blood pressure medicines?

Some blood pressure medications may interact by increasing the risk of low blood pressure symptoms. Discuss your medication list with a healthcare professional, especially if you take multiple BP-lowering medicines.

6) Can I drink alcohol when using Sildalis?

It’s best to limit alcohol. Alcohol can worsen ED and may increase side effects such as dizziness or low blood pressure. If you choose to drink, keep it moderate and monitor how you feel.

7) Are there situations when I should not use PDE5 inhibitors?

Yes. In particular, PDE5 inhibitors should not be used with nitrates and some other medicines such as riociguat. If you have serious heart conditions or other specific health risks, you may need medical assessment first.

8) What side effects are most common?

Common side effects include headache, flushing, indigestion, nasal congestion, and dizziness. Back pain and muscle aches can also occur.

9) What emergency symptoms require immediate attention?

Seek urgent help for priapism (erection lasting more than 4 hours), chest pain, fainting, severe dizziness, or sudden vision/hearing loss.

10) Can I take Sildalis with recreational drugs?

Mixing with recreational substances can increase cardiovascular and blood pressure risks and may worsen side effects. If you use recreational drugs, discuss this with a healthcare professional to understand your risk.

Summary

Sildalis (sildenafil citrate 100 mg + tadalafil 20 mg) is a combination PDE5 inhibitor used for erectile dysfunction. It improves erectile response to sexual stimulation by helping maintain blood-flow mechanisms in the penis. Because it contains substantial doses of both sildenafil and tadalafil, and because interactions with nitrates and certain other medicines can be dangerous, it’s essential to use it carefully and safely.

If you have questions about suitability, interactions, or timing for your specific needs, consult a pharmacist or healthcare professional.