This leads to more blood flow to the penis, leading to stronger erections. Who should not take Cialis? Emling S. Cialis will be available as oral tablets in 5mg, 10mg and 20mg strengths. Combined use could lead to additional lowering of blood pressure, possibly to unsafe levels. Talk with your healthcare provider about your sex life and desired use.Tadalafil is a medicine used to treat erectile dysfunction (ED, also called impotence) and problems with urination caused by an enlarged prostate (benign prostatic hypertrophy or BPH). It is sometimes known by its generic name tadalafil, and sometimes known by its trade name, Cialis. There are also other brands of this medicine available. 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.  · The most promising supplement for boosting testosterone, according to Dr. Desai, is ashwagandha. A study in the American Journal of Men’s Health examined overweight men, ages 40 to 70, with.