With Instant Consult, you can talk to a doctor online and get a radiology request sent to you digitally. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Slowly pull back the plunger until the required dose. Simply download our app from the Android or Apple stores and you can sign up in just a few minutes. We can prescribe erectile dysfunction medication in Australia if you are a suitable candidate.Cialis lasts up to 36 hours in the body, while Viagra lasts 4–6 hours in the body. Both are taken 30 minutes before sex. Cialis can cause limb pain, while Viagra can cause vision change, rash. If you have these symptoms, stop taking VIAGRA and contact a doctor right away. have or have had heart problems such as a heart attack, irregular heartbeat, angina, chest pain, narrowing of the aortic valve, or heart failure. have low blood pressure, or high blood pressure that is not controlled. Viagra mg Tablets 12 – Sildenafil. Drug Name: Sildenafil Product ID: SELECT A PRESCRIPTION. IMPORTANT NOTE: A VALID AUSTRALIAN PRESCRIPTION IS .