In a study from UCLA, data on male and female phentermine users was collected. These dieters consumed a very low calorie diet of only to calories per day, and were given phentermine at doses ranging from 8 mg to 30 mg per day.
They were also told to exercise about 45 minutes a day, three times a week. After 12 weeks, the women had lost an average of In all three studies, the rate of weight loss was highest in the early months, then tapered off, which is a pattern common to almost all weight loss methods.
This explains why the longest study, the British Medical Journal one, shows the lowest rate of loss. It wasn't that people actually lost more slowly in this study, but rather, that their weight loss significantly slowed after the first three or four months. However, unlike the placebo users in the study, the phentermine users maintained their weight loss during the last three to four months.
Based on these three studies, you can expect to lose roughly 3 to 6 lbs. Click Here to Manage Email Alerts. We were unable to process your request. Please try again later. If you continue to have this issue please contact customerservice slackinc.
Back to Healio. Elaine H. Related Content. Develop and improve products. List of Partners vendors. If you are thinking about taking a prescription diet pill, there are several medications that your doctor might prescribe. One of the most widely used weight loss medications is Adipex-P phentermine hydrochloride.
But just like every weight loss medication, there are Adipex side effects, contraindications, and lifestyle factors that you should consider before taking the pills. Adipex-P is the brand name for a medication called phentermine. The medication works to decrease appetite and speed weight loss in people who are also following a low-calorie diet and exercise program.
Adipex is generally prescribed for people with a body mass index BMI of 30 or more or for those with a BMI of 27 or more and who also have a weight-related risk factor like diabetes, high cholesterol or controlled high blood pressure.
Adipex is generally prescribed for short-term weight loss, lasting less than 12 weeks. However, some studies acknowledge that the medication is often prescribed off-label for a longer duration. Many patients who follow an Adipex-P weight loss plan take one But your doctor will recommend the best dose for you based on your personal health profile. According to prescribing information for the medication, there are certain people who should not take Adipex-P.
These include patients who:. If you take Adipex-P, you should not consume alcohol and you should be aware that the medication may impair your ability to operate machinery or drive a motor vehicle.
If you are on other weight loss medications, it is not recommended that you take Adipex-P. Lastly, Adipex may cause an increase in blood pressure. So check with your health care team if you are being treated for hypertension. In patients with diabetes, it may also cause a decrease in the dose of insulin or other oral hypoglycemic medications that are required. If you are taking more than the recommended dose and using it off-label, Adipex may stay in your system longer. A person of average build and metabolism can expect phentermine to be present in urine for three to five days.
It may be longer for an older person. It is recommended to taper Adipex use rather than immediately stopping. Adipex will generally be out of your system about two days after the last time you take it. Phentermine is stored in body fat and burning fat may support elimination. That said, there is no healthy way to speed up this process.
If you are expecting to be tested for Adipex, disclose that you are taking it or stop using it prior to being tested. People prescribed Adipex for weight loss often expect to take it for several weeks.
Plan ahead. Keep in mind that if you are using the drug as prescribed by your doctor, it is not a problem for Adipex to show up on a drug test. Phentermine has stimulant properties and can impact neurotransmitters including dopamine, norepinephrine, and serotonin. This is very similar to amphetamines.
For this reason, prescriptions are tightly regulated and often only allowed for short periods of time. It is not recommended for people with a history of stimulant use disorder. Some of the serious side effects of Adipex include increased blood pressure, heart palpitations, restlessness, dizziness, tremor, insomnia, shortness of breath, chest pain, and swelling of the legs and ankles.
Adipex overdose symptoms, on the other hand, may include:. If you think someone has overdosed on any phentermine medication, call the poison control center at If the victim has collapsed or is not breathing, call immediately.
It is important that you discuss all of your medications and supplements with your doctor to avoid drug interactions.
Drugs of special concern include those used to treat depression and similar conditions, including:. Your doctor should also be made aware of any previous heart conditions, including high blood pressure and arteriosclerosis, or if you have hyperthyroidism. It's also best to avoid using alcohol while taking Adipex as the combination can intensify the effects. Withdrawal symptoms from Adipex use tend to peak within the first couple of days and diminish over the next week.
Common withdrawal symptoms from Adipex include:.
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