Characteristic | Details |
---|---|
Active Ingredients | Sildenafil 100 mg, Vardenafil 20 mg |
Mechanism of Action | PDE-5 Inhibition |
Common Side Effects | Headache, Flushing, Dizziness |
Contraindications | Heart Disease, Nitrate Therapy |
Prescription Requirement | Yes |
Learn More about Silvitra |
Silvitra is a hybrid pharmaceutical. It combines two potent agents: sildenafil and vardenafil. These belong to the phosphodiesterase type 5 (PDE-5) inhibitors. Each molecule features a distinctive arrangement. Sildenafil and vardenafil both have a heterocyclic structure. Their complex rings include nitrogen atoms. This configuration grants them selectivity and potency.
Sildenafil 100 mg, with its pyrazolopyrimidinone core, binds effectively to PDE-5. The benzene and piperazine groups in sildenafil enhance its lipophilicity. Vardenafil 20 mg, similar but unique, contains a methoxy group at its piperazine. The ethyl group in vardenafil affects pharmacokinetics. Together, these two create a dynamic pharmacological profile.
Silvitra’s efficacy stems from dual PDE-5 inhibition. Inhibition leads to increased cyclic guanosine monophosphate (cGMP). Elevated cGMP causes smooth muscle relaxation. This occurs in the corpus cavernosum of the penis. Blood flow enhances, promoting erection upon sexual arousal.
Sildenafil 100 mg, as the primary agent, acts rapidly. Vardenafil 20 mg provides sustained activity. This combination extends therapeutic duration. Potency remains high due to selective PDE-5 inhibition. It ensures minimal off-target effects.
For more detailed pharmacological insights, reference PubChem Database.
Silvitra is contraindicated in several conditions. Patients on nitrate therapy must avoid it. Nitrates can lead to dangerous hypotension when combined. Those with severe cardiovascular disorders should exercise caution. Heart attack or stroke history necessitates avoidance.
Retinitis pigmentosa presents another contraindication. PDE-5 inhibitors may exacerbate retinal conditions. Severe hepatic or renal impairment also warrants caution. Metabolism and excretion of Silvitra could be affected.
Proper disposal of Silvitra ensures safety and environmental protection. Do not flush tablets down the toilet. Instead, utilize take-back programs when available. Pharmacies often provide such services.
If no take-back options exist, follow household disposal guidelines. Mix tablets with undesirable substances. Kitty litter or coffee grounds are ideal. Seal in a plastic bag before discarding in trash.
Silvitra may cause certain adverse effects. Common ones include headache and facial flushing. Dizziness and nasal congestion can occur. Rarely, changes in vision might manifest. Prolonged erection, known as priapism, requires immediate attention.
Gastrointestinal discomfort is possible. Indigestion or nausea could arise. Monitoring is essential for any persistent symptoms. Contact healthcare professionals if serious effects appear.
Silvitra requires a prescription. Non-prescription access is not authorized. Consultation with healthcare providers is vital. Prescription ensures appropriate dosage and usage.
Online sources may offer non-prescription variants. Such options often lack quality assurance. Risks include incorrect dosages or adulterants. Always verify sources before acquisition.