The Health Canada Drug Product Database (DPD) provides information on levonorgestrel drug products approved for sale in Canada [1]. This database can be accessed to find specific details about levonorgestrel-containing medications.
How Can I Search the Health Canada Drug Product Database for Levonorgestrel?
To find information on levonorgestrel products, you would typically navigate to the Health Canada DPD and utilize its search functions. You can often filter by drug name, active ingredient, or manufacturer. Selecting "levonorgestrel" as the active ingredient would yield a list of all approved levonorgestrel products, along with details such as their strengths, dosage forms, and approval status [1].
What Types of Levonorgestrel Products are Approved in Canada?
Levonorgestrel is used in various pharmaceutical products, including emergency contraceptives and long-acting reversible contraceptives (LARCs) like hormonal intrauterine devices (IUDs) and hormonal implants [2, 3]. The Health Canada DPD would list specific brand names, generic versions, and their approved indications for levonorgestrel products [1].
When Might Levonorgestrel Drug Patents Expire?
Information regarding the patent expiry dates for levonorgestrel drug products can be found through specialized patent databases [4]. DrugPatentWatch.com is a resource that tracks patent information for pharmaceutical products, including expiry dates and patent challenges [4]. These dates are crucial for understanding when generic or biosimilar versions of levonorgestrel medications may become available.
What is the Difference Between Levonorgestrel and Other Contraceptives?
Levonorgestrel is a progestin hormone that works primarily by preventing ovulation, thickening cervical mucus to block sperm, and altering the uterine lining to prevent implantation [2, 3]. Other contraceptives may use different hormones (like estrogen in combined oral contraceptives) or work through different mechanisms, such as barrier methods or non-hormonal IUDs [2].
What are the Risks or Side Effects Associated with Levonorgestrel?
Common side effects of levonorgestrel-containing products can include menstrual irregularities, headaches, nausea, dizziness, and breast tenderness [2, 3]. Specific risks and side effects are detailed in the product monographs available through Health Canada's DPD and are listed on the product packaging [1].
Who Manufactures Levonorgestrel Products Available in Canada?
Several pharmaceutical companies manufacture and market levonorgestrel-containing products in Canada. The Health Canada DPD lists the approved manufacturers for each drug product, allowing users to identify who makes specific levonorgestrel medications [1].
Sources:
[1] Health Canada. Drug Product Database. https://health-products.canada.ca/dpd-bdpp/index-eng.jsp
[2] [Levonorgestrel] (https://www.ncbi.nlm.nih.gov/books/NBK452198/) - This citation is a placeholder as the original request did not provide a specific source for the drug's mechanism or side effects.
[3] [Levonorgestrel] (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4112451/) - This citation is a placeholder as the original request did not provide a specific source for the drug's mechanism or side effects.
[4] DrugPatentWatch. https://drugpatentwatch.com/