No, Viagra is a prescription medication and cannot be obtained over the counter at a chemist or pharmacy without a valid prescription from a healthcare provider.
To get a prescription for Viagra, you will need to consult with a healthcare provider, who will evaluate your medical history and assess your suitability for the medication. If they determine that Viagra is appropriate for you, they will provide you with a prescription that you can take to a pharmacy to have the medication dispensed.
It's important to note that purchasing Viagra without a prescription or from an unlicensed source can be unsafe and may put your health at risk. Always consult with a healthcare provider and obtain a valid prescription before using Viagra or any other prescription medication.