Tadalafil is available on prescription only. Dosage and strength Tadalafil comes as 2. Occasionally tadalafil can make you feel dizzy. Cialis Together will be available through pharmacies without a prescription with a maximum dose of one tablet each day, and a maximum pack size of 8 tablets. However, it’s best to take sildenafil and avanafil on an empty stomach for fastest effects. Do not drink grapefruit juice if you’re taking tadalafil. · Buy Cialis online at UK Meds: subscribe & save. Tadalafil – mg, 5mg, 10mg, 20mg. Treats erectile dysfunction. Free prescription. Discreet delivery. No GP visit. About tadalafil Who can and cannot take it How and when to take it Side effects Pregnancy, breastfeeding and fertility Taking it with other medicines and herbal supplements Page . Cialis (branded Tadalafil) Cialis is a reliable, branded ED treatment that lasts up to 36hrs. Can be taken with food. Works in 30mins, lasts up to 36hrs. Works for 80% of men. .