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How Long Does It Take For Phentermine To Work? - Safe Health Reviews Online

How Long Does It Take For Phentermine To Work?

Nowadays, the rate of obesity is increasing significantly. Many people choose diet pills as supporters for their weight loss goals, and Phentermine is a common option. Knowing about “how long does it take for Phentermine to work” is important because we all know that there are some supplements that shouldn’t be used for a long period. Let’s keep on reading this post, and you will soon find the answer!

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What Is Phentermine?

Phentermine is a psychostimulant drug which is similar to an amphetamine. It was approved as a prescription appetite suppressant in 1959 by the Food and Drug Administration and has been used as an effective treatment of obesity for many years. There are plenty of brands selling Phentermine on the market, in forms of capsules or tablets.

How Does Phentermine Benefit Your Weight Loss Goal?

By affecting the central nervous system, Phentermine decreases your appetite. As a result, you are no longer crave for foods. However, it needs to be used together with a healthy diet and regular exercise routine to promote its ability.

In addition, the right Phentermine dosage can support your weight loss goal by improving metabolism rate, controlling your appetite, boosting your energy without causing any unwanted side effect.

Most obese people using Phentermine can reduce 5-15% of their body weight.

How To Use Phentermine?

There is a variety of Phentermine dosages to choose. In the US, the dosages range from 15mg to 37.5mg, and the Phentermine 37.5 is the most well-known one. You should take it once a day before breakfast or 1-2 hours after breakfast. If you decide to split the pill in halfto take it twice a day, the second dose needs to be taken at least 10 to 14 hours before night time.

To avoid side effects of phentermine or any drug interactions, ask your doctor to check your medical conditions so that he or she can give you the best advice.

How Long Does It Take For Phentermine To Work?

Many of you may be curious about how long does Phentermine last. Each body is unique, so there is no exact answer to this question. Some will see the results soon while others may see them in a longer period. Normally, you can lose your excess weight after 1-3 weeks. It’s not about how much Phentermine you take that decide the rate of your weight loss progress, but it depends on other factors:

Your Drugs Metabolization

Each one is unique, so does the way our bodies metabolize drugs. If your body metabolizes Phentermine effectively, you can lose weight faster. Otherwise, you will need more time to see the results.

Your Lifestyle

Because Phentermine is not a magical weight loss supplement, you cannot rely on it and wait for a perfect body. In order to be fit, you need to have a positive lifestyle.

  • Healthy diets: “You are what you eat!” Losing weight does not mean not eating anything but eating healthily. There is a wide range of healthy foods for weight loss. Vegetables, fruits, beans, chicken breast, tuna are some In addition, you need to avoid taking fast foods, smoking and drinking alcohol.
  • Regular workouts: Going to the gym, doing yoga or just jogging around your house can help you keep fit. Just remember to exercise regularly. If you don’t have plenty of time for training, try to spend about 20-30 minutes every day.
  • Your sleep habit: Sleep has great impact on your health. Staying up late can slow down your metabolism rate. As a result, you will need more time to burn excess fat. So, sleep early and avoid staying up too late.

Does Phentermine Have Any Side Effect?

Phentermine may cause some unwanted side effects that range from mild to moderate or even serious extent. You can experience headache, dizziness, itching, insomnia, and diarrhea. As a result, if you are going to drive or take part in a class or somewhere that required a full attention, do not take Phentermine.

Besides, there are some more dangerous side effects such as chest pain, high blood pressure and shortness of breath.

  • Do not drink alcohol because it can enhance the side effects.
  • Do not take it while being pregnant of breastfeeding.

In addition, serious drug interaction may occur if you use Phentermine while having MAO inhibitor within last two weeks.

Therefore, ask your doctor to have him prescribed you a suitable dosage. If any of those side effects above occur, stop taking it and check with your doctor or medical consultant.

Should I Continue Phentermine After Losing Weight?

Normally, Phentermine is considered as a short-term supplement. It should be used no more than 3 months. So, when you achieve your weight loss goal, it’s time to stop taking this supplement.

However, you should decrease the amount of Phentermine gradually to avoid withdrawal symptoms. Abruptly discontinuing after a long time taking it can lead to exhaustion and depression.

After ending up with Phentermine, make sure that you keep on your balanced diet and regular training workout. That’s because it’s not hard to gain weight back. Don’t forget to calculate your body BMI regularly to know if your weight is on track.


Phentermine is a considerable choice for those who are obese or overweight. Nevertheless, you cannot expect that the positive results will show up right after you take this supplement. Abusing or using it improperly may cause several dangerous side effects. It is necessary to combine using it with a healthy diet and a suitable workout routine. Check your body composition regularly and give it all to achieve your weight loss goal.

Thank you for spending your time reading this post. We hope that it helps you know more about “how long does it take for Phentermine to work?