Taking tadalafil alone is not enough to cause an erection. A small number of patients taking Cialis also reported abnormal vision. However, all medications come with risks. You can buy it from a store-based pharmacy or reputable online pharmacy with a prescription. It’s available in 25 mg, 50 mg, and mg tablets and lasts up to 18 hours. If approved, the provider will issue a prescription. Cialis vs.Cialis comes in several different strengths, including: milligrams (mg) 5 mg. 10 mg. 20 mg. The cost for these different strengths depends on whether you have insurance, your individual plan. AdComplete the Online Consultation with our Doctor. Personalize Your Needs. If Appropriate, Get a Prescription for ED from RexMD®. Free Shipping test1.ru has been visited by 10K+ users in the past month. The drug comes in low-dose versions that can be taken daily. This means you can have sex at any time, rather than needing to take a pill from time to time as needed like other ED brands. The starting dose for daily-use Cialis is milligrams (mg). If that doesn’t work, you can increase your daily dose up to 5 mg.