Viagra generally only stays in your system for four to six hours. Common side effects may include: headache; flushing warmth, redness, or tingly feeling ; nausea, upset stomach; runny or stuffy nose; or muscle pain, back pain, pain in your arms, legs, or back. How do I do this? The most important difference between the two is that Cialis Daily offers the option for sex daily whilst Cialis is intended for occasional use. Can Cialis be used with other treatments for impotence? What it means is that for a hour window after you pop that pill you should find it easier to get a strong, hard erection which can be used during sex.Cialis Together 10mg Tablets – Tadalafil – 4 Tablets. Write a review. £ 4 UNI | £ per 1UNI. Free next day delivery on selected medicines when you use code HEALTHFNDD, order by 8pm – online only. Helps you get and maintain an erection when you need it. Effective up to 36 hours. Easily shop & compare Rx plans for Medicare with Walgreens Find Rx Coverage. Learn more about Medicare Annual Enrollment. Medicare Annual Enrollment: 10/15–12/7 Learn more about Medicare Annual Enrollment. Find low-cost copays on select plans. Free A1C or blood glucose testing. Find lower Rx prices at Walgreens. FREE shipping on all. Daily tadalafil: or 5 mg daily pill. Tadalafil: 5 mg, 10 mg, or 20 mg, taken as needed. Cialis: mg, 5 mg, 10 mg, and 20 mg, taken as needed. The cost of the medication is from $ per.