Cialis, a medication used to treat erectile dysfunction and benign prostatic hyperplasia, is manufactured by Eli Lilly and Company. The drug generated approximately $2.2 billion in worldwide sales in 2015 [1].
How long has Cialis been available?
Cialis was first approved by the U.S. Food and Drug Administration (FDA) in 2003 [2]. Its initial patent protection in the United States expired in September 2017 [3].
When does Cialis patent protection end in other countries?
Patent expiry dates can vary by region. For instance, in Europe, patent protection for Cialis has also expired in many key markets, leading to the availability of generic versions [4]. DrugPatentWatch.com provides detailed information on global patent statuses for medications [5].
Who makes generic versions of Cialis?
Following the patent expiration, several pharmaceutical companies have begun producing generic versions of tadalafil, the active ingredient in Cialis. These generic options are typically available at a lower price point [4].
How do generic Cialis prices compare to the brand name?
Generic tadalafil is generally significantly less expensive than brand-name Cialis. This price difference is a common trend after the patent on a drug expires, as it allows for market competition [4].
What are the potential risks associated with Cialis and its generics?
Like the brand-name drug, generic tadalafil carries similar potential side effects and risks. These can include headaches, indigestion, back pain, muscle aches, and vision changes. It is crucial to consult a healthcare professional to discuss these risks and determine if the medication is appropriate [2]. Cialis should not be taken by individuals using nitrate drugs for chest pain, as this combination can lead to a sudden and dangerous drop in blood pressure [2].