When Phentermine Stops Working

Phentermine works by reducing the appetite. When you maintain a caloric deficit, you lose weight. Phentermine is most commonly used in combination with diet, exercise, and behavior modification programs.

Table of Contents
  • What is GLP-1 and How Does it Affect Weight Loss?
  • What Side Effects Can You Expect?


The drug phentermine is used with a doctor-approved exercise, behavior change, and reduced-calorie diet program to help you lose weight. It is used by certain overweight people, such as those who are obese or have weight-related medical problems. Losing weight and keeping it off can lessen the many health risks that come with obesity, including heart disease, diabetes, high blood pressure, and a shorter life. Phentermine belongs to a class of drugs called anorectics. It works by decreasing appetite. Your doctor may prescribe this under the names Adipex or Suprenza.

Phentermine is a prescription medication used to treat obesity. It works by changing the way your brain and nervous system respond to hunger and fullness signals. This can help you lose weight without feeling hungry or deprived. Phentermine is available in tablet form and may be taken with or without food.

Phentermine should not be taken for longer than 12 weeks because it could cause serious side effects, including death, heart attack, stroke, blood clots in the lungs (pulmonary embolism), internal bleeding, mood changes like depression or suicide attempts or thoughts of suicide, high blood pressure (hypertension). You should not take phentermine if you have uncontrolled glaucoma; high blood pressure that cannot be controlled by medicine; advanced heart failure; an overactive thyroid gland (hyperthyroidism); an eating disorder such as bulimia nervosa; kidney disease; an underactive thyroid gland (hypothyroidism); adrenal gland tumors called pheochromocytoma; a history of drug addiction within the last year; severe depression; asthma attacks caused by aspirin allergy either alone or together with other drugs that affect breathing (such as selective serotonin reuptake inhibitors [SSRIs] used to treat depression); seizures caused by certain drugs known as tricyclic antidepressants

Phentermine is used for a limited period of time to speed weight loss in overweight people who are exercising and eating a low-calorie diet. Phentermine belongs to a class of drugs called anorectics. It works by decreasing appetite.

Although phentermine is not addictive, it must be taken exactly as instructed by your doctor. Do not take more or less than the recommended dosage without consulting your physician.

In order to avoid taking too much phentermine, you may need to decrease your dose after some time has passed.

Phentermine is a prescription medication, so it's important to take this with a doctor's supervision. The drug has been shown to be effective for short-term weight loss. However, it should not be used as a substitute for healthy eating and exercise over the long term.

Phentermine works best if you take it early in the day and don’t eat too late in the evening. You should talk with your doctor about your daily schedule before taking this medication. Swallow it whole. Don’t crush, chew, break, or open an extended-release capsule or capsule. That can could lead to dangerous side effects.

  • Phentermine is taken early in the day.
  • Don't eat too late in the evening.
  • Don't crush, chew, break, or open an extended-release capsule or capsule. That can could lead to dangerous side effects.

This medicine is FDA approved for short term use only. If you take it longer than recommended by your doctor, you may experience serious side effects and dangerous complications.

Do not take more than the prescribed dose. Do not take this drug with other drugs or alcohol, as it can increase your risk of overdose or death. If you have any questions about how to use phentermine safely and effectively, talk to your doctor before taking the medication.

Make sure your weight loss plan is working for you and not just your body alone.

If you are going to lose weight, it's important to ensure that:

  • You're not just losing weight, but also keeping it off.
  • You're not losing muscle mass.
  • You're not losing too much weight too quickly (which could lead to metabolic damage).
  • You're not losing weight in the wrong places (for example, if you have a lot of fat on your stomach and lose a lot of muscle mass through exercise, this will make your belly stick out even more).


If you have ever tried to lose weight and failed, phentermine could be the solution you’ve been looking for. With a doctor-approved exercise, behavior change, and reduced-calorie diet program, it can help you reach your goal of being healthier and happier.

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