Cenforce 100, which contains sildenafil citrate (the same active ingredient as Viagra), is not officially approved by regulatory bodies like the FDA (USA), MHRA (UK), or Health Canada. While sildenafil itself is legal and available by prescription in all three countries, Cenforce is considered an unlicensed or generic product not authorized for sale by these health agencies. Buying it online or without a prescription can be risky due to concerns about quality, authenticity, and safety. If you're in the USA, UK, or Canada, it's best to obtain sildenafil through a licensed pharmacy with a valid prescription to ensure you're using a regulated and safe product.