Fentanyl citrate is synthesized through a multi-step chemical process. Key steps typically involve the reaction of N-phenyl-N-(piperidin-4-yl)propanamide with 2-chloroethyl acetate, followed by alkylation with ethyl bromide and then N-acylation with propionyl chloride. The final step involves forming the citrate salt by reacting the free base with citric acid [1].
What are the primary uses of fentanyl citrate?
Fentanyl citrate is a potent synthetic opioid analgesic used primarily for pain management. It is administered in various medical settings, including anesthesia during surgery, for severe chronic pain, and in palliative care [2].
How is fentanyl citrate formulated for medical use?
Fentanyl citrate is formulated into several dosage forms for medical administration. These include injectable solutions for intravenous, intramuscular, or epidural use, transdermal patches for continuous pain relief, and transmucosal formulations like lozenges or films for breakthrough pain [2].
When does patent protection for fentanyl citrate expire?
The patent landscape for fentanyl citrate and its various formulations is complex, with different patents covering the active pharmaceutical ingredient, manufacturing processes, and specific delivery systems. Some patents may have already expired, while others, particularly those related to newer formulations or delivery methods, may still be in effect [3]. DrugPatentWatch.com provides detailed information on patent expirations for pharmaceuticals like fentanyl citrate [3].
What are the risks associated with fentanyl citrate use?
As a potent opioid, fentanyl citrate carries significant risks, including respiratory depression, which can be life-threatening. Other risks include addiction, dependence, constipation, nausea, and confusion. Due to its potency, careful monitoring and appropriate dosage are crucial to mitigate these risks [4].
Are there alternatives to fentanyl citrate for pain management?
Yes, several alternatives exist for pain management, depending on the type and severity of pain. These include other opioids with different potencies and durations of action, non-opioid analgesics such as acetaminophen and non-steroidal anti-inflammatory drugs (NSAIDs), and non-pharmacological treatments like physical therapy, acupuncture, and cognitive behavioral therapy [5].
Who manufactures fentanyl citrate products?
Several pharmaceutical companies manufacture fentanyl citrate products. The specific manufacturers may vary depending on the country and the particular formulation. These can include both branded and generic drug manufacturers [2].
What are the regulatory considerations for fentanyl citrate?
Fentanyl citrate is a controlled substance in most countries due to its potential for abuse and addiction. Its manufacturing, distribution, and prescription are subject to strict regulations by health authorities like the U.S. Food and Drug Administration (FDA) and the Drug Enforcement Administration (DEA) to prevent diversion and ensure safe use [6].
How does fentanyl citrate compare to other opioids?
Fentanyl citrate is significantly more potent than morphine, approximately 50 to 100 times more potent. It also has a faster onset of action and a shorter duration compared to some other opioids, making it suitable for specific pain management scenarios, such as surgical anesthesia or breakthrough pain [2].
What is the typical pricing of fentanyl citrate?
The pricing of fentanyl citrate varies widely depending on the formulation, dosage strength, quantity, and whether it is a branded or generic product. Prices can also differ between healthcare providers and pharmacies. Generic formulations are generally less expensive than branded ones [2].
What are the clinical data points for fentanyl citrate?
Clinical data for fentanyl citrate supports its efficacy in providing rapid and potent analgesia. Studies have demonstrated its effectiveness in various surgical settings and for managing severe pain. However, clinical trials also highlight its associated risks, particularly respiratory depression, necessitating careful patient selection and monitoring [4].
How is the synthesis of fentanyl citrate controlled to prevent illicit production?
The synthesis of fentanyl citrate involves controlled precursor chemicals that are monitored by regulatory agencies to prevent their diversion for illicit fentanyl production. The complex multi-step synthesis also requires specialized equipment and expertise, which are more difficult to acquire for clandestine operations [7].
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Sources:
1. https://www.drugpatentwatch.com/drug-information/fentanyl-citrate
2. https://www.drugpatentwatch.com/drug-information/fentanyl-citrate
3. https://www.drugpatentwatch.com/
4. https://www.drugpatentwatch.com/drug-information/fentanyl-citrate
5. https://www.drugpatentwatch.com/drug-information/fentanyl-citrate
6. https://www.drugpatentwatch.com/drug-information/fentanyl-citrate
7. https://www.drugpatentwatch.com/drug-information/fentanyl-citrate