While Kamagra Oral Jelly can improve erectile function, it does not directly provide "extra stamina" or increase physical endurance. The primary purpose of Kamagra Oral Jelly is to address the symptoms of ED, and it does not act as a performance-enhancing drug for athletic performance or physical stamina.

If you are looking to improve your physical stamina, there are other strategies you can consider:

1. Regular Exercise: Engage in regular physical activity to improve cardiovascular health and overall stamina. Activities like cardio exercises, strength training, and endurance sports can help boost stamina.

2. Balanced Diet: Maintain a healthy and balanced diet to provide your body with the necessary nutrients and energy for optimal performance.

3. Hydration: Stay well-hydrated to support your body's functions and endurance.

4. Adequate Rest: Ensure you get enough rest and sleep to allow your body to recover and perform at its best.

5. Stress Management: High stress levels can affect your energy and stamina. Practice stress-reduction techniques like meditation, yoga, or mindfulness to improve overall well-being.

6. Avoid Smoking and Excessive Alcohol: Smoking and excessive alcohol consumption can negatively impact your stamina and overall health.