Vidalista 10 mg (tadalafil) does affect blood circulation, but in a specific way. It relaxes certain blood vessels by increasing blood flow, particularly to the ***** during ***** stimulation. It can also cause a small drop in overall blood pressure because of its blood-vessel–relaxing effect. This is usually not a problem for healthy adults, but dizziness or light-headedness can occur. The effect can be stronger when combined with blood-pressure medicines, alpha-blockers, or alcohol. Never combine tadalafil with nitrate medicines such as nitroglycerin/GTN or isosorbide, because blood pressure can fall dangerously. So, tadalafil doesn't generally “improve circulation throughout the body” as a treatment for poor circulation; its principal therapeutic effect is increasing penile blood flow.