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When will zepbound be available?

When will zepbound be available?

Navin Khosla NowPatientGreen tick
Written by Rajive Patel, BPharm
Updated on 4 Mar 2024

Obesity and being overweight are significant health concerns that affect millions of people worldwide. These conditions can lead to various weight-related health problems, such as heart disease, stroke, and type 2 diabetes. In the quest for effective treatments, pharmaceutical companies have been developing weight loss medications to help individuals manage their weight. The most well known obesity drugs being Wegovy and Ozempic, both containing semaglutide. However a new drug addition is Lilly’s Zepbound (tirzepatide) injection. In this comprehensive guide, we will explore the FDA approval process for Zepbound, its mechanism of action, clinical trials, potential side effects, and the eagerly awaited release date.

Understanding Zepbound and its mechanism of action

Zepbound, developed by Eli Lilly and Company, is a medication designed for chronic weight management in adults who are overweight or have obesity with at least one weight-related condition. The active ingredient in Zepbound is tirzepatide, which activates receptors of hormones secreted from the intestine, including glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP). By regulating appetite and food intake, Zepbound aims to help individuals feel full, reduce hunger, and experience fewer food cravings.

The US Food and Drug Administration (FDA) approval process for Zepbound

The journey of Zepbound from development to FDA approval is a rigorous and meticulous process. Pharmaceutical companies must conduct extensive clinical trials to demonstrate the safety and efficacy of their medications. In the case of Zepbound, the FDA granted it both Priority Review and Fast Track designations due to the pressing public health need for effective weight management options. These designations expedite the review process, enabling potentially life-changing medications to reach patients sooner.

Clinical trials and efficacy of Zepbound

To evaluate the effectiveness of Zepbound for chronic weight management, two randomized, double-blind, placebo-controlled clinical trials were conducted. These trials involved adults with obesity or those who were overweight with at least one weight-related condition. Over 72 weeks, participants received either Zepbound or a placebo once weekly.

The results of these trials were promising. Patients who received Zepbound experienced a statistically significant reduction in body weight compared to those who received the placebo. Additionally, a greater proportion of patients who received Zepbound achieved at least a 5% weight reduction compared to the placebo group. These findings highlight the potential of Zepbound as a valuable tool in the management of obesity.

Potential side effects of Zepbound

As with any medication, Zepbound is associated with potential side effects. The most commonly reported side effects include nausea, diarrhea, vomiting, constipation, and abdominal discomfort. Injection site reactions, fatigue, hypersensitivity reactions, burping, hair loss, and gastroesophageal reflux disease are also possible side effects. It is crucial for individuals considering Zepbound to discuss these potential side effects with their healthcare providers and make an informed decision based on their specific health circumstances.

Release date and availability of Zepbound

The FDA approved Zepbound on November 8, 2023, for chronic weight management in adults with obesity or those overweight, with at least one weight-related condition. This approval marked an important milestone in the fight against obesity, providing healthcare professionals with an additional tool to support their patients’ weight management efforts.

While the FDA has approved it’s use, the actual availability of Zepbound in the market may take some time. Following FDA approval, pharmaceutical companies must complete manufacturing processes, ensure adequate supply, and coordinate distribution to healthcare providers and pharmacies. Therefore, individuals interested in Zepbound need to consult their healthcare providers for the most accurate and up-to-date information regarding its release date and availability.


Zepbound (tirzepatide) injection represents a significant development in the field of chronic weight management. Its mechanism of action, supported by clinical trials, offers hope for individuals struggling with obesity or being overweight with weight-related health conditions. While Zepbound has shown promising results as a weight loss drug, it is crucial to consider potential side effects and consult healthcare providers for personalized advice. As the release date of Zepbound approaches, individuals eagerly await the availability of this medication, hoping for a positive impact on their weight management journey.

Additional Information:

  • It is important to note that Zepbound should not be used in patients with a personal or family history of medullary thyroid cancer or patients with Multiple Endocrine Neoplasia syndrome type 2
  • Zepbound has not been studied in patients with a history of pancreas inflammation (pancreatitis) or severe gastrointestinal disease and should not be used in combination with Mounjaro or a GLP-1 receptor agonist
  • Patients using Zepbound should be aware of potential interactions with oral contraceptives and consider additional methods of contraception
  • The FDA will continue to monitor the safety and effectiveness of Zepbound, and individuals experiencing any adverse reactions should report them through the FDA’s Yellow Card scheme or consult their healthcare providers
  • For more information on obesity, individuals can visit the NHS website’s dedicated section on obesity


Medical Disclaimer

NowPatient has taken all reasonable steps to ensure that all material is factually accurate, complete, and current. However, the knowledge and experience of a qualified healthcare professional should always be sought after instead of using the information in this page. Before taking any drug, you should always speak to your doctor or another qualified healthcare provider.

The information provided here about medications is subject to change and is not meant to include all uses, precautions, warnings, directions, drug interactions, allergic reactions, or negative effects. The absence of warnings or other information for a particular medication does not imply that the medication or medication combination is appropriate for all patients or for all possible purposes.

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