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How To Not Gain Weight After Stopping Phentermine

Phentermine has been hailed as a miracle weight loss drug, helping thousands achieve their ideal figure. According to research, those on the medication lose more than 16 pounds in only fourteen weeks. 

However, there are concerns. Phentermine may cause weight gain after people stop taking it. Studies show that 80 percent of patients regain some or all of their lost weight after two years. 

Therefore, people nearing the end of their prescriptions must think carefully about their next steps. They should put strategies in place now to avoid putting on weight once they stop taking their tablets.

Healthy Diet

Keep To A Healthy Diet

Phentermine is not a long-term weight loss solution. The only strategy that works is eating a consistently healthy diet at or around your total daily expenditure of calories or TDEE. Click here to learn how to calculate your TDEE.

The official recommendations are to: 

  • Eat all types of vegetables
  • Eat whole fruits
  • Make at least half of all grain consumption wholegrains
  • Include seafood and nuts
  • Limit foods and beverages high in sugar, sodium, or saturated fat
  • Customize fruit and beverage consumption to personal preferences and cultural traditions

People looking to maintain their weight should keep their calories below their TDEE, avoid low-quality processed foods, and exercise regularly.

cook at home

Cook More Food At Home

Americans consume 32 percent of calories from food sources from outside the home. Unfortunately, these meals are high in fat, sodium, and sugar. 

Therefore, try to cook more food at home. Research shows it is healthier and contains fewer calories, salt, and sugar. 

Anyone who has lost significant weight knows this to be true. Those who maintain a steady weight only eat out once or twice per week, instead of daily.


Make Physical Activity A Part Of Your Routine

Try to burn at least 1,500 to 2,000 calories per week during exercise. That equates to around 40 minutes of moderate exercise, such as cycling or brisk walking, three to four times a week. 

Try to get as much physical activity as you can. There is no limit to the amount of light-to-moderate exercise you can do. 

If possible, make it a part of your routine. For instance, cycle to work instead of taking the car or find a new job that includes walking or being on your feet. 

Weigh ins

Get Regular Weigh-Ins

It is also essential to get regular weigh-ins if you’re coming off phentermine. Tracking weight loss or gain shows you if you are following the right strategy. 

Most people weigh themselves daily and then use apps to track their progress over time. You also can measure your weight weekly, but it will take longer to see a trend emerging because the likelihood of fluctuations is higher. 

Don’t get too stressed out or obsessive over your weight. Depending on your food and water intake, your body weight can fluctuate 5-6 pounds per day. Oftentimes, people will track their weight daily and become discouraged by the lack of progress. 

As a rule of thumb, it’s best to weigh yourself 2-3 times per week, always in the morning and preferably after your bowel movements.


Keep Your Appetite Under Control

Another way to prevent weight gain after coming off phentermine is to maintain restraint. Don’t gorge yourself on high-fat, high-sugar processed foods.

Unfortunately, willpower alone won’t keep you disciplined for long. Therefore, you should include other strategies in your routine. For instance: 

    • Only go grocery shopping when you feel full
    • Avoid buying unhealthy snacks and keeping them in your home
    • Continue to view yourself as someone who recently lost weight, even months or years after the initial weight loss
    • Eat plenty of high-fiber foods that will keep you full, particularly nuts and beans
    • Don’t allow the weekend to become an excuse for letting your discipline slip
intermitten fasting

Try Intermittent Fasting

Intermittent fasting is a dietary strategy that involves restricting the hours during which you consume food. While there are different variations of intermittent fasting, the common theme is that you limit when you can eat.

Many people have successfully used intermittent fasting as a tool for weight loss. One popular method is to eat a small, healthy breakfast and then wait until later in the day to have lunch. By saving most of their calories for the end of the day, they are able to enjoy a satisfying dinner and still stay within their calorie goals.

While some people may view intermittent fasting as a miracle fix for weight loss, it is important to understand that the benefits come from limiting the amount of time you are able to eat in a day, which in turn limits your calorie intake. By consuming fewer calories than your body needs, you create a calorie deficit, which can lead to weight loss over time.

Intermittent fasting may also have other health benefits, such as improved insulin sensitivity and reduced inflammation, but more research is needed to fully understand these effects.

Overall, intermittent fasting can be an effective tool for weight loss when used in conjunction with a healthy diet and lifestyle. It is important to consult with a healthcare professional before starting an intermittent fasting regimen to ensure that it is safe and appropriate for you. Additionally, it is important to focus on making healthy food choices during eating periods and to stay hydrated throughout the day.

How to not gain weight after stopping phentermine

Will I Gain Weight When I Stop Taking Phentermine?

Phentermine is a medication that modulates certain neurotransmitters in the brain, which can result in a decreased appetite and increased metabolism. 

While this can be helpful for patients looking to lose weight, it is important to note that once they stop taking phentermine, their body’s natural regulatory mechanisms may return to their previous state, resulting in increased hunger and a slowed metabolism.

For this reason, many patients who stop taking phentermine find themselves reverting to old habits and gaining weight again. And as stated above, studies show that 80 percent of patients regain some or all of their lost weight after two years. To prevent this from happening, it is important to create and maintain healthy habits such as proper meal timing, portion sizing, and making good food choices, while still using phentermine.

By establishing and maintaining these habits, patients can help ensure that they do not gain weight once they stop taking phentermine.

It is important to note that phentermine should only be used as part of a comprehensive weight loss plan that includes healthy lifestyle choices, such as diet and exercise, and should always be used under the guidance of a healthcare professional.


How Do I Transition Off Phentermine?

If you have been taking phentermine for an extended period of time and decide to stop taking it all at once, you may experience unpleasant withdrawal symptoms such as depression and severe tiredness. This is because your body has become accustomed to the medication and stopping suddenly can cause a shock to your system.

To help ease the transition off of phentermine, healthcare professionals will guide you through a tapering process. This process involves gradually reducing your dosage over a period of weeks until you are no longer taking the medication. The tapering process typically lasts for about three weeks and will vary depending on your individual needs and circumstances.

During the first week of tapering, you may be instructed to take half of your regular dose per day. In the second week, you may take half of your regular dose every other day. By the third week, you should be able to stop taking phentermine altogether.

In addition to the tapering process, some healthcare professionals recommend slightly increasing caffeine intake in order to help with increased levels of hunger and fatigue that may occur during the transition period off of phentermine. However, it is important to remember that caffeine can have its own set of side effects and should be used in moderation.

Overall, it is important to work closely with your healthcare provider when discontinuing the use of phentermine to ensure a safe and comfortable transition. Following a proper tapering process can help minimize withdrawal symptoms and increase the chances of maintaining weight loss achieved while using the medication.


It is normal to experience some weight gain after stopping phentermine, as your body’s natural regulatory mechanisms for appetite and metabolism may return to their previous state. However, this does not mean that weight gain is inevitable or that all the progress made while taking phentermine will be lost.

By maintaining a disciplined, healthy diet and exercising regularly, you can help minimize the negative effects of stopping phentermine. Eating a well-balanced diet with plenty of fruits, vegetables, whole grains, and lean protein can help keep you feeling full and satisfied, while also providing the nutrients your body needs to function properly.

Regular exercise can also help support weight loss and weight maintenance by burning calories and boosting metabolism. Even just 30 minutes of moderate exercise, such as brisk walking or cycling, can be beneficial for overall health and weight management.

It is important to remember that weight loss is a journey that requires dedication and commitment to healthy habits, even after the use of phentermine has ended. By continuing to prioritize healthy eating and exercise, you can continue to achieve and maintain a healthy weight, even without the aid of medication.

If you are struggling to achieve your weight loss goals, it may be time to consider seeking professional help. Weight Wise Weight Loss Center offers comprehensive weight loss programs, including prescription medications like phentermine, that can help jumpstart your weight loss journey and provide the support and guidance you need to succeed.

Don’t let excess weight continue to hold you back from living your best life. Contact Weight Wise Weight Loss Center today to schedule a consultation and learn more about how our personalized weight loss programs can help you achieve your goals. Take the first step towards a healthier, happier you and start your journey to weight loss success today!

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