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What happens after 3 months of phentermine?

Published in Weight Loss Medication 2 mins read

After 3 months of phentermine treatment, individuals typically experience significant initial weight loss, with an average reduction of approximately 3% of their initial body weight. This initial period is often a crucial phase where many patients see noticeable progress in their weight management journey.

Expected Weight Loss Milestones

Phentermine is commonly prescribed for short-term use to aid in weight reduction, and its effects on weight loss are usually most evident within the first few months of treatment.

Timeframe Average Weight Loss (Percentage of Initial Body Weight) Example for a 200-pound (90.7 kg) Person
After 3 Months Approximately 3% About 6 pounds (2.7 kg)
After 6 Months 5–7% 10–14 pounds (4.5–6.4 kg)

It's important to note that while 3% is an average at 3 months, some individuals may achieve even greater weight loss. The progression typically continues for those who remain on treatment, with many seeing a total weight loss of 5-7% after 6 months.

Beyond the Initial 3 Months

Following the initial 3-month period, the course of treatment with phentermine often involves a re-evaluation by a healthcare provider to assess progress and determine the next steps.

  • Continued Progress: For many, the weight loss journey continues beyond the initial 3 months. Those who continue phentermine treatment, often in conjunction with lifestyle modifications, can expect to reach the 5-7% range of initial body weight by the six-month mark. For someone starting at 200 pounds, this translates to a substantial reduction of 10 to 14 pounds.
  • Individual Variation: While these percentages represent averages, individual results can vary significantly. Factors such as adherence to a healthy diet and regular exercise, an individual's metabolic rate, and overall health status all play a role. Some individuals may experience more substantial weight loss than the typical percentages, demonstrating a strong response to the medication.
  • Healthcare Provider Consultation: Decisions regarding the continuation of phentermine, adjustments to dosage, or the exploration of alternative weight management strategies are always made in consultation with a doctor. This ensures that the treatment plan remains aligned with individual progress, any potential side effects, and overall health goals. It is crucial to maintain open communication with your healthcare provider throughout your treatment.