Ask your pharmacist for a list of the ingredients. For further information contact your pharmacist or Eli Lilly and Company directly. Shipping: Discreet, fast shipping is a must. One of the first Cialis ads aired at the Super Bowl. Tadalafil may cause side effects. It’s available in 10 mg and 20 mg tablets. If you are taking tadalafil for erectile dysfunction, your doctor will probably start you on an average dose of tadalafil and increase or decrease your dose depending on your response to the medication.Tadalafil (Cialis) is a medicine used to treat erectile dysfunction (ED, also called impotence) and problems with urination caused by an enlarged prostate (benign prostatic hypertrophy or BPH). Tadalafil works by helping to relax the blood vessels in the penis, allowing blood to flow into the penis, and causing an erection. AdUse Code WAG10 To Save 10% Instantly At Walgreens. Shop Online & Get Free Delivery! Walgreens Offers 1 Hour Delivery. Use Code WAG10 & Save 10% Instantly!Walgreens 1 Hour Delivery · Order On es: Personal Care · Insurance · Gift Cards. 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.