Yes, you can buy Ritalin online with a secure payment method, but you must ensure that the pharmacy is legitimate. Many licensed online pharmacies offer safe transactions through encrypted payment gateways. Always verify that the website has proper security measures like SSL encryption to protect your personal and financial details. Avoid websites that only accept cryptocurrencies or wire transfers, as these could be signs of fraud. Reading customer reviews and checking for certifications can help you determine the reliability of the seller.