Pearlman says the availability of an easy-to-access treatment for men dealing with ED is welcome news. It works best when taken one hour before sex. Clinical trials for MED found minimal side effects. The safety and effectiveness of Cialis when used with other treatments for impotence has not been studied. That means eating healthy foods, exercising, getting good sleep, limiting stress, and treating other health conditions that might cause ED, like high blood pressure, heart disease, diabetes, obesity, and low testosterone, Dr. There are two different ways to take tadalafil, either daily or on an as needed basis.Side Effects. Headache, stomach upset, back pain, muscle pain, stuffy nose, flushing, or dizziness may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly. To. Cialis can help achieve an erection when sexual stimulation occurs. An erection will not occur just by taking a pill. Follow your doctor’s instructions. provides accurate and independent information on more than 24, prescription drugs, over-the-counter medicines and natural products. This material is provided for .  · from. Cialis Together is a long-lasting treatment for erectile dysfunction (ED) that is available over the counter and does not require a prescription. It contains 10mg of the active ingredient tadalafil and is effective for % of men. The effects of Cialis Together take minutes to fully take effect and can last for up to 36 hours.