Across 68 first-hand reports, people mentioned a side effect 10 times (about 15 per 100 reports). The most common: headache, nasal congestion, low estrogen. User reports show what people notice — they can't tell you whether Sildenafil is safe for you.
“The Viagra didn't help my legs, but after a shit night of sleep I felt better than normal the next day.”
“Tried viagria and it doesn't work well for me. Only works for a short time and gives me a bad headache and nasal congestion.”
“i don't touch viagra... felt like my skull was gonna crack open”
“BluChew (sildenafil): works every time. I get rock hard in 30 min”
“I took Viagra low dose at night before bed every third day for almost a year. I ended up decreasing my aromatase enzyme and now have low estrogen.”
“Swiss chems sold me sugar capsules labeled sildenafil.”
Conclusion: Tadalafil shares a similar efficacy and safety with sildenafil and significantly improves patients' sexual confidence. Furthermore, patients and their partners prefer tadalafil to sildenafil. Hence, tadalafil may be a better choice for ED treatment.