Do not use more of it and do not use it more often than your doctor ordered. You can take it up to 4 hours before you want to have sex. Cialis vs. Males between the ages of 30 and 65 would be eligible to buy four tablets after a consultation with a pharmacist. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.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. The Savings Offer and Program expire on 12/31/ For further information, call , visit , or write: Viatris Inc., P.O. Box , Mission, KS See risks & benefits. Learn more about what VIAGRA® (sildenafil citrate), a prescription treatment for ED. AdSave Time & Money with Online Prescription for Viagra, Cialis, Sildenafil and Tadafil. Free & Private Online Consultant with Real Doctors. Reliable E.D. Meds Shipped has been visited by 10K+ users in the past monthFree Shipping · Personalized Plan · Discreet Packaging · Real DoctorsTypes: Hair Loss · Premature Ejaculation · Sexual Health · Privacy Policy.