Phentermine is classified as an anti-obesity drug and primarily acts as a central nervous stimulant. What this means is that the drug works by reducing the patient’s appetite – and a large appetite is often what causes people to gain weight and eventually develop obesity. Phentermine is currently considered the most popular option for patients who are looking to turn toward a pharmaceutical solution to assist in the treatment of their weight-related issues. The drug is widely used today and often recommended to patients with obesity that affects their health. Doctors are usually required to prescribe the drug to patients, as Phentermine is considered a prescription drug in many countries. We all love drinking alcohol, especially during social gatherings.


Because elderly patients are more likely to have decreased renal function, care should be taken in dose selection, and it may be useful to monitor renal function. It is not known if Phentermine is excreted in human milk; however, other amphetamines are present in human milk. Animal reproduction studies have not been conducted with Phentermine. If this drug is used during pregnancy, or if the patient becomes pregnant while taking this drug, the patient should be apprised of the potential hazard to a fetus. Primary pulmonary hypertension and/or regurgitant cardiac valvular disease, palpitation, tachycardia, elevation of blood pressure, ischemic events.

It may also be prescribed to people who have a BMI of 27 kg/m2 or greater with other risk factors, such as high blood pressure, diabetes or high cholesterol. Phentermine is safe to use when taken as prescribed by your doctor. Make sure your doctor knows about all of the other medicines you take, as well as any medical problems you have. It should not be taken along with other weight loss drugs. Though rare, high blood pressure has been reported in some patients.

This drug should not be used with certain medications because very serious interactions may occur. If you are taking or have taken other appetite-suppressant drugs in the past year (such as diethylpropion, ephedra/ma huang), tell your doctor or pharmacist before starting this medication. If you suddenly stop using this medication, you may have withdrawal symptoms . To help prevent withdrawal, your doctor may lower your dose slowly. Withdrawal is more likely if you have used phentermine for a long time or in high doses. Tell your doctor or pharmacist right away if you have withdrawal.

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Check out the infographic below, or visit our post on phentermine and alcohol, to learn why it’s recommended to AVOID alcohol while taking phentermine. Generally speaking, there should be at least hours of gap between alcohol and phentermine. This is done so that both of these don’t combine, which would have caused severe reactions. Now that you know this reason, you should also be aware of how this medication works in the body.


This will help to minimize their risks and could potentially avoid a more serious issue from occurring. Psychological factors have also been linked to the drug. Patients who start to rely on Phentermine to assist in controlling their weight may develop mental illnesses. If you are taking phentermine, the best advice is to abstain from drinking alcohol.

Use in Patients on Insulin or Oral Hypoglycemic Medications for Diabetes Mellitus

I began pairing a pill with a Red Bull or adding in other types of uppers in an attempt to reach the same effect. Those pills are what I used to snap myself out of a hangover every morning to parent my three small children. The sick part of my brain told me that phentermine made me more desirable to my husband, more fun and interesting at parties, and a better employee.

unwanted effects

Ask your pharmacist about using those products safely. Taking MAO inhibitors with this medication may cause a serious drug interaction. Avoid taking MAO inhibitors during treatment with this medication.

The year was 2001, and I picked the clinic with the nicest ad in the phone book. Struggling silently through trauma looked a lot like a quarter-life crisis to everyone on the outside, and my already low self-esteem hit rock bottom. My weight ballooned; I dropped out of college one semester shy of graduation. Alcohol made me forget all of my troubles, but I didn’t want to continue packing on weight. So when a friend recommended diet pills, I immediately took an interest.

Phentermine is a Schedule IV controlled substance, meaning it carries a risk of addiction, abuse and dependence. However, it is safe when taken as prescribed by your doctor. For this reason, it’s important only to take phentermine that has been prescribed for you, exactly as prescribed.

Multiple studies have been conducted on the efficiency of Phentermine, as well as the long-term effects that the drug may have on the human body. While it is okay to start your weight loss journey with Phentermine, it is something that you need to do with caution. Another reason you must not take Phentermine and alcohol is that it increases your risk of addiction .

These drugs are often used to treat similar conditions. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.

Daily drinking can have serious consequences for a person’s health, both in the short- and long-term. Many of the effects of drinking every day can be reversed through early intervention. Typically, alcohol withdrawal symptoms happen for heavier drinkers. Alcohol withdrawal can begin within hours of ending a drinking session. People with a history of drug or alcohol abuse are advised not to take phentermine.

Phentermine disease interactions

Cessation of the drug may cause withdrawal symptoms to appear. It is always advised to discuss this process with the doctor and to stop using the drug by first lowering the dose gradually. In addition to hypertension, patients are also at risk of vasculopathy and vasoconstriction when they use Phentermine. These effects seem to become even more serious with long-term use of Phentermine drugs. Refrain from drinking alcohol while on Phentermine treatment to avoid unwanted side effects.

overactive thyroid

Tell patients to keep Phentermine in a safe place to prevent theft, accidental overdose, misuse or abuse. Selling or giving away Phentermine may harm others and is against the law. Typical actions of amphetamines include central nervous system stimulation and elevation of blood pressure. Tachyphylaxis and tolerance have been demonstrated with all drugs of this class in which these phenomena have been looked for. Phentermine is a sympathomimetic amine with pharmacologic activity similar to the prototype drugs of this class used in obesity, amphetamine (d- and dll-amphetamine). This drug is known to be substantially excreted by the kidney, and the risk of toxic reactions to this drug may be greater in patients with impaired renal function.

It isn’t known exactly how phentermine works to help you lose weight. It may work by increasing the release of chemicals in your brain that help reduce your appetite. This may help you eat less, which would aid in weight loss. Taking phentermine together with other diet medications such as fenfluramine (Phen-Fen) or dexfenfluramine can cause a rare fatal lung disorder called pulmonary hypertension. Do not take phentermine with any other diet medications without your doctor’s advice.

People who take both alcohol and phentermine may experience effects such as:

They’ll order tests to determine whether you have this condition. If you have constipation, it’s usually mild to moderate and easily managed. Learn more about some of the side effects phentermine may cause.

But it’s not clear whether this side effect occurred in studies. If you have bothersome headaches, it’s usually safe to take over-the-counter pain relievers with phentermine. But avoid taking pain medications that also contain caffeine.

I kept myself within a certain range on purpose because I’d rather be a little fat on speed than thin without access to it. study offers clue as to why alcohol is addicting (phenyl-tertiary-butylamine), with several brand names including Ionamin and Sentis, is a medication used together with diet and exercise to treat obesity. It is taken by mouth for up to a few weeks at a time, after which the benefits subside. It is also available as the combination phentermine/topiramate.

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