tovaf - The short answer is yes; you can take Viagra or its generic form, sildenafil, every day. Whether you need to or should, depends.
But it is best to consult a doctor. Since each person is different, about what's best for you.

xodor - You can get doctor's advice and Viagra prescription online using telemedicine https://www.edrugstore.com/viagra/how-can-i-get-a-viagra-prescription-online-using-telemedicine/ . With a doctor, you can discuss dosage and frequency. The doctor consider your overall health and any other medical conditions you are being treated for.