Viagra (sildenafil) and Cialis (tadalafil) both treat erectile dysfunction, but they differ significantly in their mechanisms and duration of action. Viagra works by increasing blood flow to the penis, primarily through inhibition of PDE5. This effect typically lasts for 4-5 hours. Expect noticeable results within 30-60 minutes of ingestion, with the optimal effect achieved within 2 hours. Remember to take Viagra on an empty stomach for best results.
Cialis, conversely, inhibits PDE5 for a considerably longer period, resulting in a significantly extended duration of action–up to 36 hours. This allows for spontaneity and less precise timing compared to Viagra. Cialis generally takes effect within 30 minutes to 2 hours, and its effects can be felt for much longer. Consider your individual lifestyle and preferences when choosing between these medications.
Important Note: Both medications have potential side effects. Common side effects for both include headaches, flushing, nasal congestion, and indigestion. More serious side effects, although rare, include vision changes and hearing loss. Consult your doctor immediately if you experience any concerning side effects.
Dosage and individual response vary. Your physician will determine the appropriate dose based on your medical history and needs. They will discuss potential interactions with other medications you might be taking.
Always consult a healthcare professional before starting any new medication, including Viagra or Cialis, to ensure its safety and efficacy for you.
