Common side effects include headache, facial flushing, indigestion, and dizziness. In some cases, ED can cause a strain on relationships and impact self-esteem. And not all online pharmacies have the capability to safely ship medications that need to be temperature-controlled, such as insulin. More serious side effects may include a drop in blood pressure or an erection that lasts longer than four hours. Here are some key factors to consider when deciding: Pricing: Know how much your monthly supply will cost with shipping and tax. Those with a history of blood pressure or heart issues, hormonal imbalances, mental health issues, and diabetes should consult their doctor before trying PDE5 inhibitors. According to the FDA, generic medications contain the same active ingredients as brand names, meaning there’s no difference in effectiveness or safety.Key takeaways: 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. Compare prices and print coupons for Cialis (Tadalafil (Cialis)) and other drugs at CVS, Walgreens, and other pharmacies. Prices start at $ Note: Some pharmacies do not allow the savings card to be used for opioid drugs. How much does tadalafil or cialis cost near you? Find the best tadalafil or cialis prices near you now with our cost comparison tool and start saving today.