Understanding the Timeline: How Long It Takes to Lose Weight on Vyvanse

Vyvanse, a prescription medication primarily used to treat attention deficit hyperactivity disorder (ADHD) and binge eating disorder (BED), has also been noted for its side effect of weight loss in some individuals. Understanding the timeline and factors influencing weight loss on Vyvanse is crucial for those considering or currently using the medication for this purpose. This article delves into the expected timeline for weight loss, factors affecting it, and important considerations.

What is Vyvanse?

Vyvanse (lisdexamfetamine) is a central nervous system stimulant. It works by affecting chemicals in the brain and nerves that contribute to hyperactivity and impulse control. While it’s primarily prescribed for ADHD and BED, the weight loss observed in some patients has garnered attention.

Expected Timeline for Weight Loss on Vyvanse

The timeline for weight loss on Vyvanse can vary significantly among individuals due to various factors, including metabolism, dosage, and lifestyle. However, a general timeline can be outlined.

Initial Weeks

  • 1-4 Weeks: Most users may start noticing a decrease in appetite as one of the immediate side effects of Vyvanse, which can lead to initial weight loss. This period is often when the body is adjusting to the medication.

Following Months

  • 1-3 Months: With continued use, weight loss tends to be more noticeable during this period. The amount of weight lost can vary, but it’s often attributed to the sustained decrease in appetite and possibly increased energy levels leading to more physical activity.

Long-term Use

  • 6 Months and Beyond: Weight loss may plateau after several months of use as the body adjusts to Vyvanse. Some individuals might continue to lose weight, but at a slower rate.

Factors Affecting Weight Loss on Vyvanse

Several factors can influence how much weight you lose on Vyvanse and how quickly it happens.


The dosage of Vyvanse can significantly impact the extent of weight loss. Higher doses may lead to more pronounced appetite suppression, but they also come with increased risk of side effects.

Individual Metabolism

Metabolic rates vary from person to person. Those with faster metabolisms may notice quicker weight loss, while others with slower metabolisms might see slower results.

Lifestyle Choices

Diet and exercise play crucial roles in the weight loss process, even when on Vyvanse. Healthier food choices and regular physical activity can enhance the medication’s weight loss effects.

Important Considerations and Safety

While the potential for weight loss on Vyvanse can be appealing, there are important safety considerations to keep in mind.

Not a Weight Loss Drug

Vyvanse is not approved for weight loss and should not be used solely for this purpose. Its primary indications are for treating ADHD and BED. Weight loss is a side effect and varies among individuals.

Potential Side Effects

Aside from weight loss, Vyvanse can cause other side effects, including insomnia, dry mouth, anxiety, and increased heart rate. It’s important to discuss these potential side effects with a healthcare provider.

Consultation with a Healthcare Provider

Before starting Vyvanse, especially with the intention of losing weight, consulting with a healthcare provider is crucial. They can provide guidance based on your health history and current condition.


The timeline for weight loss on Vyvanse varies among individuals, with factors such as dosage, metabolism, and lifestyle playing significant roles. While some may experience noticeable weight loss, especially in the initial months of use, it’s important to remember that Vyvanse is not a weight loss medication. Its primary use is for treating ADHD and BED. Anyone considering Vyvanse for weight loss should consult with a healthcare provider to discuss potential benefits, risks, and appropriate expectations.