Sildenafil is known as generic Viagra because it is not sold under the Viagra brand name. People take it in a dosage of 25, 50, or 100 milligrams (mg) per day. Sildenafil is a phosphodiesterase type 5 (PDE5) inhibitor - the standard treatment for erectile dysfunction.

The government ordered Pfizer Inc. to yank cheeky television ads that promised better sex for men taking Viagra because they failed to disclose known risks associated with the drug, according to a letter released on Monday.

Once generic competition occurs for a brand name drug, companies generally will stop direct-to-consumer advertising (DTC) for its medication. Why promote a brand name drug in the face of generics? You would just help drive sales of the cheaper generic forms.

The reason is apparently less about the NFL's ratings decline last season than about pharmaceutical patents: Both Viagra and Cialis will soon be available as generic drugs, and therefore their makers no longer feel the need to advertise the name brands.

In truth, there's only one Viagra. That's Pfizer's drug powered by the active ingredient Sildenafil. It comes in 25mg, 50mg, and 100mg doses. Some men might find that the best treatment for erectile dysfunction (ED) is generic Sildenafil, the generic unbranded form of Viagra.

The biggest difference between brand and generic Viagra is their colors. Viagra is known as “little blue pill,” but sildenafil generally comes as a small white pill. They also can have slightly different inactive ingredients, but this doesn't affect their safety or effectiveness.

In 1994, Pfizer filed a patent covering the use of sildenafil to treat erectile dysfunction. This would be marketed as Viagra.

Viagra: Still the ED Leader After All These Years Nearly a quarter-century later, sildenafil has spawned a handful of competitors, notably tadalafil (Cialis) and vardenafil (Levitra), but it remains the undisputed king of ED care in the U.S., according to 2018 to 2019 numbersopens in a new tab or window.

The discovery that active ingredient in Viagra known as sildenafil could lead to an erection wasn't exactly a planned event. The sildenafil compound was originally developed by Pfizer for the treatment high blood pressure (hypertension) and angina pectoris (chest pain due to heart disease).

Global Erectile Dysfunction Drugs Market size was valued at USD 2130 million in 2021 and is projected to reach USD 3250 million by 2028, growing at a CAGR of 5.4% from 2021 to 2028 according to a new report by Intellectual Market Insights Research.

Cialis® is a registered trademark of Lilly ICOS LLC. All other trademarks are the property of their respective owners. 2. Viagra® is a registered trademark of Pfizer, Inc.

Cialis lasts for around 36 hours compared with only 4 to 5 hours for Viagra. Food does not affect the activity of Cialis, whereas food may decrease the effectiveness of Viagra. Cialis can be used once daily, at a smaller dosage, and is also effective at treating benign prostatic hyperplasia (BPH).