How Long Does Phentermine Stay In Your System (And Why)?

Exact Answer: 2 Days

Phentermine is used for the treatment of obesity by people who suffer from the issue of being overweight. Its chemical name is phenyl-tertiary-butylamine, which are sold with the brand name Ionamin at the dispensary for medical use. It is consumed through the mouth means they are oral tablets. It should only be used for few weeks like three to four weeks not more than this, otherwise, your body will not show any effect on the weight loss.

These weight loss pills are recommended to people with a BMI (Body Mass Index) of more than 30, below this BMI it could be very dangerous. These pills increase your metabolism rate and reduce your appetite especially making you feel full all the time. These pills can have a negative impact on the health rather than working in a positive manner if consumed for a long time.

How Long Does Phentermine Stay In Your System


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How Long Does Phentermine Stay In Your System?

Phentermine is just not enough alone for weight loss, it needs proper diet, exercise, and timetable. The main reason for weight loss is calorie reduction, this process only results in weight loss. There are many common side effects of using this drug are blood pressure, dizziness, restlessness, trouble sleeping and increased heartbeat rate.

It does not stop till the common side effects, but it may have some serious side effects also like drug abuse, hypertension, valvular heart diseases which are caused due to fenfluramine component of a drug combination called fen-phen. These pills are recommended to pregnant ladies and ladies who breastfeed their children. If consumed by breastfeeding ladies it might have an adverse effect on the child, and the women too.

The significant effects of weight loss start in the first week itself, and it continues till six months. If the pills are continued to be used for about nine months it will show no effect on your weight loss. These drugs are not advisable to everyone, before using any drug for medicinal use it is very important to consult a doctor. It is not advisable for people who have a history of drug abuse, as they can get addicted to these medicines.

The people who are allergic to sympathomimetic amines in the drug. People who suffered from cardiovascular disease, hyperthyroidism, and glaucoma are advised to be away from this drug, it can be very fatal. If the person is on monoamine oxidase inhibitor (MOI) should not consume these drugs, and the ladies who are pregnant or trying to be pregnant, and ladies who are breastfeeding.

Blood Test2 Days
Urine Test1-4 Days
Hair Follicles2-3 Months

Why Does Phentermine Stay That Long In Your System?

There is a rapid change in the modern world which changes everything like lifestyle, food, timetable for a person. The main problem of this changing world is their food, which makes them fat or obese. The obesity rate is increasing day by day among adults, and especially among teenagers. Teenagers are more attracted to junk foods like burgers, pizza, pasta, fried items, and drinks with added sugars.

The foods like these are destroying the health of the people. Peer pressure among teenagers is the main reason of which teenagers start these types of eating habits. To avoid the situation of obesity one should be very careful about their eating habits, and diet every day. They should go for running, exercises, and yoga which will shape your body, and make your mind fresh for the complete day.

There are many health problems one has to suffer due to weight issues like low calcium in bones leading to joint pain, blood pressure, high sugar, and many more problems in the body. This overweight does not affect you physically but also affects a person mentally too. They might lose their confidence and become more conscious about their health, face rejections from the peer groups and family too which break them from inside.


It is never advisable to use any medicines to lose weight because they ate not effective for everyone. There are many side effects that are also used using these drugs which can be short-term or long-term too in severe cases.



Last Updated : 23 February, 2024

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