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Dragon Pharma Viagra (Sildenafil Citrate) – PDE5 Inhibitor Compound

Overview

Dragon Pharma Sildenafil Citrate is a compound classified as a phosphodiesterase type-5 (PDE5) inhibitor. It acts by increasing nitric-oxide–mediated vasodilation, relaxing smooth muscle tissue and supporting improved blood flow. Originally developed for cardiovascular research, it has also been studied for its effects on endothelial and pulmonary function.

Mechanism of Action

By blocking PDE5 activity, Sildenafil helps maintain higher intracellular levels of cyclic guanosine monophosphate (cGMP). This mechanism promotes vessel relaxation and oxygen delivery to tissues, which can be of interest in cardiovascular and metabolic physiology research.

Storage & Usage

Store in a cool, dry place away from direct sunlight. Keep the container tightly closed when not in use.

For Erectile disfunctions: Start with 50 mg; adjust to 100 mg or reduce to 25 mg as needed. Take 30–60 minutes before sexual activity do not take than once daily. For bodybuilding Use: 25–50 mg pre-workout to enhance blood flow (off-label).

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Lab-Tested for Quality and Purity

Research Applications

• Cardiovascular and pulmonary function studies
• Endothelial health and nitric-oxide signaling research
• Investigations of oxygen delivery and recovery processes during exercise

General Physiology Insights

In controlled research settings, improved blood flow and oxygen transport can influence how the body manages exertion, nutrient delivery, and recovery. These physiological principles are of interest to exercise-science researchers studying circulation, energy metabolism, and muscle recovery.

Side Effects 

Common side effects include headache, flushing, dizziness, and vision changes. Rare but serious effects include sudden hearing or vision loss and prolonged erections lasting over 4 hours; avoid use with nitrates, blood pressure medications, or grapefruit products.

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