Remove the syringe from the bottle. If you are a Mayo Clinic patient, this could include protected health information. Beyond this, Kamagra can be ordered from numerous sources online, making the decision to purchase it that much easier. If you are a Mayo Clinic patient, this could include protected health information. Often, these are prescribed for chest pain called angina. To use the oral liquid: Shake the bottle well for at least 10 seconds before each use. · Description and Brand Names. Before Using. Proper Use. Precautions. Side Effects. Products and services. Proper Use. Drug information provided by: Merative, . Manufacture and sale of sildenafil citrate drugs known as “generic Viagra” is common in India, where Pfizer’s patent claim does not apply. Trade names include Kamagra (Ajanta . Learn about uses, how it works, and more for Viagra (sildenafil). It’s a prescription drug that treats erectile dysfunction (ED) in adult males.