Some studies show that Cialis reaches its maximum effect around two hours after taking an as-needed dose. Tadalafil is sometimes taken as needed, usually at least 30 minutes before sexual activity and not more often than once every 24 hours. If you are taking tadalafil to treat erectile dysfunction, you should know that it does not cure erectile dysfunction or increase sexual desire. Who should not take Cialis? Tadalafil works for these conditions by promoting muscle relaxation, which improves blood flow in PAH and urinary flow in BPH. Do not take more or less of it or take it more often than prescribed by your doctor. It might be a while before MED is available at your local pharmacy.Cialis (tadalafil) is a popular medication used to treat erectile dysfunction. It’s available in tablets ranging from mg to 20mg. It can cost more than $ for a month’s supply, depending on the dosage you need and the pharmacy you visit. You can save more than 90% on the average retail price at certain pharmacies by using a GoodRx . For the as-needed dose, plan to take Cialis at least 30 minutes before sexual activity, but bear in mind it may take as long as 2 hours to take effect. Also, Cialis requires sexual stimulation to. Here are five things to know about the new topical gel and how it can help if you’re struggling to get an erection: 1. It Targets the Problem and Works Quickly. Being a topical means MED