Detailed Comparison: Viagra 100mg vs Spedra
How These Medications Work
Both Viagra 100mg (sildenafil) and Spedra (avanafil) belong to the PDE5 inhibitor class. They work by blocking the phosphodiesterase type 5 enzyme, which increases blood flow to the penis during sexual arousal. Neither medication causes automatic erections - sexual stimulation is still required for effectiveness.
Onset Time and Duration
Spedra generally works faster than Viagra 100mg, with effects potentially noticeable within 15-30 minutes compared to Viagra's typical 30-60 minute onset. However, Viagra 100mg may last longer, with effects persisting for 4-6 hours versus Spedra's 3-4 hours. Individual response varies, and some men may find one medication suits their lifestyle better than the other.
Food and Alcohol Interactions
Spedra has less interaction with food compared to Viagra 100mg. Fatty meals can significantly delay Viagra's effectiveness, whilst Spedra is less affected by food intake. Both medications can have enhanced side effects when combined with alcohol, though moderate alcohol consumption is generally acceptable.
Side Effect Profiles
Common side effects for both medications include headaches, facial flushing, and nasal congestion. Viagra 100mg may cause more visual disturbances (blue-tinted vision), whilst Spedra might cause back pain in some users. Most side effects are mild and temporary, resolving as the medication leaves your system.
Cost Considerations
Viagra is available as both branded tablets and generic sildenafil. The generic sildenafil option provides identical effectiveness at a lower cost, containing the same active ingredient as branded Viagra. Spedra is typically more expensive as it's a newer medication with no generic equivalent currently available. EverydayMeds offers both branded Viagra and generic sildenafil options, allowing patients to choose based on their budget and preferences.
Dosage Flexibility
Viagra is available in 25mg, 50mg, and 100mg strengths, providing flexibility for dose adjustment. Most men start with 50mg, which can be increased to 100mg or reduced to 25mg based on effectiveness and tolerability. Spedra comes in 50mg, 100mg, and 200mg tablets, with 100mg being the typical starting dose.
Clinical Effectiveness
Clinical studies suggest both medications are highly effective for treating erectile dysfunction, with success rates typically exceeding 70% in clinical trials. Individual response varies, and some men may respond better to one medication than another. Factors such as underlying health conditions, other medications, and individual physiology can influence effectiveness.












