Taking generic ED medications is an effective way to save money without sacrificing quality. Use only the brand of this medicine that your doctor prescribed. Keep out of the reach of children. Sexual activity may be a strain on your heart, especially if you have heart disease. It may be difficult to remain firm despite wanting to have sex. Tadalafil may cause side effects. May increase risk of unwanted side effects eg, prolonged erection of the penis.Yes, Cialis is available as a generic medication called tadalafil. Generic medications are just as effective as the brand. Tadalafil 10 mg is available for about $10 for 10 tablets . Medications Prescribed: Viagra, Cialis, Cialis Daily, Levitra, tadalafil, sildenafil, vardenafil. Generic offered: Yes. Why We Chose It. The simple combination of Rex MD’s online platform, its helpful customer service, and the abundance of ED treatment options make it a one-stop shop for all your sexual health needs. The most commonly reported side effects in patients treated with Cialis during the testing of the product were: headache. indigestion. back pain. muscle pain. flushing. stuffy nose. Patients who.