We also looked at additional services, such as access to digital pharmacies and home delivery options. Other warning signs of an unsafe online pharmacy include outdated medication, no customer service, or suspiciously low prices. This information is reviewed by a licensed practitioner who will assess your eligibility for the medication. Here are some key factors to consider when deciding: Pricing: Know how much your monthly supply will cost with shipping and tax. Psychological factors like stress, depression, or anxiety can also contribute.How do ED medications work? Viagra, Cialis, Levitra, and Stendra are all in a class of medications called phosphodiesterase type 5 (PDE5) inhibitors. These drugs . Cialis (tadalafil) is an expensive drug used to treat erection problems in men. It may also be used to treat the enlargement of the prostate gland. This drug is slightly more popular .