Taking more than 1 dose every 24 hours can cause heart issues and other problems. The safety and effectiveness of Cialis when used with other treatments for impotence has not been studied. How should this medicine be used? Lilly, the manufacturer of Cialis — an erectile dysfunction ED drug — offers a free trial for its oral products. Nitrates come as tablets, sublingual under the tongue tablets, sprays, patches, pastes, and ointments. Do not stop taking tadalafil without talking to your doctor.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*. heart attack symptoms – chest pain or pressure, pain spreading to your jaw or shoulder, nausea, sweating. Common Cialis side effects may include: headache; flushing (warmth, redness, or tingly feeling); nausea, upset stomach; stuffy nose; or. muscle pain, back pain, pain in your arms, legs, or back. This is not a complete list of side effects. Roman is a telehealth prescription service and online pharmacy that provides prescription Cialis for ED and a host of other conditions, like hair loss, cold sores, and premature ejaculation. When.