Is Cialis for men only? Individuals with “crowded” optic disc are also considered at greater risk for NAION compared to the general population; however, evidence is insufficient to support screening of prospective users of PDE5 inhibitors, including CIALIS, for this uncommon condition. Blood is sent into shaft-like columns in the penis, and you get hard. Others may find that it takes Cialis closer to eight hours to work and take the medication well before sexual activity. It does not have to be taken around the time of sexual activity. In some patients, concomitant use of these two drug classes can lower blood pressure significantly [see Drug Interactions 7. Viagra is always taken as needed, usually an hour before having sex.CIALIS is indicated for the treatment of ED and the signs and symptoms of BPH (ED/BPH). Limitation of Use If CIALIS is used with finasteride to initiate BPH treatment, such use is recommended for up to 26 weeks because the incremental benefit of CIALIS decreases from 4 weeks until 26 weeks, and the incremental benefit of CIALIS beyond. Tadalafil (Cialis) Switch to brand medication info_outlined Used for Benign Prostatic Hyperplasia and Erectile Dysfunction MORE expand_more Check your prescription Prescription 5mg tadalafil (Cialis) (30 tablets) edit Choose your pharmacy moses lake, WA Safeway Walgreens Rite Aid info How to use this coupon phone Need help? What is Cialis? Cialis (tadalafil) is a prescription drug used to treat erectile dysfunction (ED) and benign prostatic hyperplasia (BPH). It belongs to a class of drugs called phosphodiesterase.