How to Prepare for a CT Scan

This guide outlines how to prepare for your CT scan, including what to wear, eating and drinking instructions, and information about contrast dye. Following these steps helps ensure accurate images and a smooth appointment.

New to CT? Read What Is a CT Scan and How Does It Work? for a simple overview before your appointment.

Check your referral

Your referral form or booking confirmation will specify whether your scan requires contrast. Preparation can differ depending on the type of CT ordered by your doctor.

Unsure why CT was requested? See Why Your Doctor Might Refer You for a CT Scan.

General preparation

  • Bring your referral, Medicare card, and any previous imaging if available.
  • Arrive 10–15 minutes before your appointment to complete forms.
  • Wear loose, comfortable clothing without metal zips, belts, or buttons.
  • Leave jewellery, watches, and piercings at home when possible.
  • Continue taking your usual medications unless instructed otherwise.

Fasting and hydration

  • If your scan uses contrast, avoid eating for 2–4 hours before your appointment.
  • Drink water to stay hydrated; clear fluids are usually fine.
  • If your scan does not use contrast, you can generally eat and drink normally.

Learn how contrast affects preparation in CT Scan with Contrast vs Without Contrast.

Patients with diabetes or kidney conditions

  • Tell us if you have diabetes or kidney problems. These conditions can affect how your body handles contrast dye.
  • If you take metformin, you may need to pause it temporarily after your scan. We will give specific instructions.
  • Bring a list of current medications with you.

Contrast injection preparation

  • For contrast scans, a small IV cannula will be placed in your arm.
  • Let staff know if you have had any reaction to iodine contrast before.
  • Inform us of asthma, allergies, thyroid disease, or if you are pregnant or breastfeeding.

For more on safety, read Are CT Scans Safe?

Pregnancy and children

  • If you are or might be pregnant, inform us before your scan. We will assess whether CT is necessary or suggest an alternative such as ultrasound or MRI.
  • For children, we tailor scanning protocols to keep radiation dose as low as possible.

On the day of your scan

  1. Arrive a few minutes early to complete your questionnaire.
  2. Remove metal items and change into a gown if required.
  3. If contrast is used, you will have a brief consultation before the injection.
  4. Relax and follow the radiographer’s instructions during the scan.

Curious what happens during the scan? Read What to Expect During a CT Scan.

After your scan

  • If you had contrast, drink extra water through the day to help flush it from your body.
  • You can eat, drink, and resume normal activities immediately unless told otherwise.
  • If you notice redness, swelling, or pain at the injection site, contact us or your GP.

Quick checklist

  • Referral and Medicare card ready
  • Loose, metal-free clothing
  • Follow fasting instructions if contrast is used
  • Drink water before and after
  • Arrive early to allow time for paperwork

In summary

Most CT scans require little preparation. Following these simple steps helps ensure clear images and a safe, efficient experience. If you are unsure about fasting, medications, or contrast, contact our team before your appointment.

Buy Viagra In Australia: What You Need To Know Before You Order. Visit Our Pharmacy ↓


Rediscover Your Confidence: An Australian Doctor’s Candid Review of Viagra (Sildenafil)

For men over 30 · Written from the perspective of a practising Australian GP

Attention: The Silent Struggle No One Talks About

Let me be blunt. If you’re over 30 and you’ve ever felt the panic of your body not cooperating in the bedroom, you know it’s not just about sex. It’s about the way you feel as a man. It’s the apologies you make, the excuses you invent, the way you start avoiding intimacy because the fear of failure is worse than the lack of sex itself.

You are not alone. In Australia, erectile dysfunction affects roughly one in five men over 40, and many younger men in their 30s struggle with performance anxiety, stress, fatigue, excess weight, high blood pressure, diabetes, or the after-effects of prostate surgery. What’s worse, ED can be an early warning sign of cardiovascular disease. Ignoring it doesn’t make it go away.

But here’s the good news: this is one of the most treatable conditions in men’s health. And one of the most effective, well-studied tools is a medicine you’ve heard about for decades—Viagra, also known by its active ingredient, sildenafil.

Interest: What Is Viagra and How Does It Work?

Viagra is not a magic blue pill that causes automatic erections. It is a PDE5 inhibitor that works with your body’s natural arousal system. When you are sexually stimulated, nerve signals release nitric oxide, which increases a chemical called cyclic GMP. This relaxes blood vessels in the penis and allows blood to flow in faster than it flows out. Viagra simply blocks the enzyme that breaks down cyclic GMP, so the erection is firmer, fuller, and easier to maintain.

This matters for men over 30 because many of the common causes of ED—poor blood flow, stress hormones, obesity, diabetes, and some blood pressure medications—reduce the strength of that natural signal. Viagra helps compensate by keeping the erection signal alive longer. It does not alter libido, but by removing the fear of failure, it often restores desire and emotional connection.

Studies show sildenafil helps about 70–80% of men with erectile dysfunction achieve erections sufficient for intercourse. It has been used by millions of men worldwide for more than 25 years, with a strong safety record when prescribed properly. Like any medicine, it can cause mild side effects such as headache, flushing, nasal congestion or indigestion, but serious side effects are rare when used correctly.

Desire: What Viagra Can Do for You

Imagine planning a romantic evening without the background hum of anxiety. You take a small tablet, you relax, and when the moment comes, your body responds. You feel like yourself again—confident, present, and connected to your partner. That is what effective ED treatment offers.

Your Questions, Answered by an Australian Doctor

1. How long before sex should I take Viagra?

For most men, the ideal time is 30 to 60 minutes before intercourse. The effect lasts around 4 to 6 hours, so you have a comfortable window. If you miss that timing, don’t panic—many men find it still works after 60–90 minutes, especially if taken on an empty stomach. Plan ahead but do not clock-watch; the goal is to reduce anxiety, not add to it.

2. Can I take Viagra after a heavy meal?

Yes, you can, but a heavy, high-fat meal—think steak and chips, creamy pasta, or a rich curry—slows stomach emptying and delays absorption. That means Viagra may take longer to kick in and may feel less effective. If you know intimacy is on the cards, take Viagra before a big meal, or keep the meal light. If you have already eaten heavily, wait at least 90–120 minutes and avoid additional alcohol.

3. Can Viagra cause high blood pressure?

No, it does not cause high blood pressure. In fact, sildenafil can cause a small, temporary drop in blood pressure. This is usually harmless, but it becomes dangerous if you combine Viagra with nitrate medications—such as glyceryl trinitrate (GTN) or isosorbide mononitrate—or recreational drugs called “poppers.” That combination can cause a life-threatening fall in blood pressure. If you have high blood pressure, Viagra is often safe alongside your regular antihypertensive tablets, but your GP must review your full medication list first.

4. Does Viagra help with premature ejaculation?

Not directly. Viagra is not approved to treat premature ejaculation. However, many men in my clinic notice that firmer erections and reduced performance anxiety give them a greater sense of control, and they last longer as a result. If premature ejaculation is your primary concern, there are other effective treatments—behavioural techniques, creams, or specific medications—but Viagra can still improve overall sexual confidence and satisfaction.

5. Can Viagra be used during assisted reproduction?

Viagra is not a fertility drug. It does not improve sperm count, motility, or morphology. But if erectile dysfunction is preventing you and your partner from having intercourse during the fertile window, sildenafil can be a practical aid to help you achieve timed intercourse. Many fertility specialists are comfortable with this use, but always coordinate with your treating team.

6. How to get a prescription for Viagra in Australia

Getting a prescription in Australia is straightforward. Book a consultation with a registered GP—either face-to-face or via telehealth. Be honest about your symptoms, how long they have lasted, and any other health conditions. Your doctor will usually check blood pressure, review your medications, and may order blood tests for diabetes, cholesterol, or testosterone. If it is safe, you will receive a prescription. You can then purchase the medicine at any licensed Australian pharmacy.

7. How to dispose of expired Viagra in Australia

Never flush expired or unwanted medicines down the toilet, and do not throw them in the household rubbish. In Australia, the correct method is to return them to any community pharmacy under the Return Unwanted Medicines (RUM) project. This service is free, anonymous, and environmentally safe. The pharmacist will place the medicine in a secure disposal bin.

8. What brands of sildenafil are listed on the PBS?

In Australia, the Pharmaceutical Benefits Scheme (PBS) lists several generic brands of sildenafil for men who meet specific clinical criteria, such as erectile dysfunction associated with diabetes, spinal cord injury, or radical prostate surgery. Common PBS-listed brands include:

Common Sildenafil Brands and PBS Status in Australia
Brand Active Ingredient Typical PBS Status
APO-SildenafilSildenafil citratePBS listed (Authority Required)
Sandoz SildenafilSildenafil citratePBS listed (Authority Required)
Alphapharm SildenafilSildenafil citratePBS listed (Authority Required)
Generic Health SildenafilSildenafil citratePBS listed (Authority Required)
Viagra (Pfizer)Sildenafil citrateUsually private prescription; not PBS listed for most ED

PBS listings change. Ask your pharmacist or GP to check the current schedule and whether you meet the criteria.

Practical Cheat Sheet: Viagra at a Glance

Key Facts for Daily Use
Question Doctor’s Summary
When to take it30–60 minutes before sex; effects last 4–6 hours
After a heavy mealAllowed, but high-fat food delays absorption; wait 90–120 minutes
Blood pressure effectDoes not cause high BP; may mildly lower it; never mix with nitrates
Premature ejaculationNot a direct treatment; may improve confidence and control
Assisted reproductionUseful only if ED blocks timed intercourse; not a fertility booster
Prescription routeGP or telehealth; possible PBS authority if criteria met
DisposalReturn to pharmacy under RUM project—never flush
PBS brandsAPO, Sandoz, Alphapharm, Generic Health sildenafil

Action: Take the First Step Today

You have spent long enough worrying in silence. Erectile dysfunction is not a character flaw, and it is not something you have to accept as the price of getting older. With the right assessment and treatment, most men can restore satisfying intimacy and rebuild their self-esteem.

Book an appointment with an Australian-registered doctor today. Talk openly about your symptoms. Ask whether sildenafil is suitable for you. If it is, you can leave the consultation with a prescription, fill it at a trusted local pharmacy, and begin the next chapter with confidence. When you buy Viagra or its PBS-listed generic equivalent from a licensed Australian pharmacy, you are not just purchasing a tablet—you are buying back confidence, intimacy, and peace of mind.

Do not wait another year. Your partner, your health, and your future self deserve action today.

Disclaimer: This article is general educational information and does not replace individual medical advice. Always consult a qualified Australian doctor before starting, stopping, or changing any medication.



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