This medicine is available only with your doctor’s prescription. In trials of the drug, individuals taking Cialis saw a significant reduction in the frequency and urgency of urination and improved urine flow. Key facts It usually takes 30 to 60 minutes for tadalafil to work for erectile dysfunction. Counterfeit medicines can be very dangerous. ED occurs more frequently in older men. The results showed the combination to be even more effective than either medication alone.Dosage range: mg to 5 mg. Frequency: once daily, regardless of the timing of sexual activity. Cialis’s recommended dosage when it’s taken as needed for ED is as follows. Dosage range: 5 mg to 20 mg. Frequency: one dose at least 30 minutes before sexual activity, with a maximum of one dose per day*. day supply of generic Rx’s starting at $4. Medication therapy management Get answers to your medication questions. Digital vaccine record View your digital COVID vaccine . Price and dosage: Brand-name Cialis: $20 – $80 per dose (5mg, 10mg, 20mg) Generic Cialis (tadalafil): $11 – $44 per dose (5mg, 10mg, 20mg) Daily generic Cialis (tadalafil): $8 per dose (mg.