Dosage Information in more detail. Ask your doctor before taking Adipex-P with diet pills, other stimulants, or medicine to treat attention deficit hyperactivity disorder ADHD. Although phentermine is one of the most commonly prescribed weight-loss medications, it has some potentially serious drawbacks. Taking Adipex-P together with other diet medications such as fenfluramine Phen-Fen or dexfenfluramine Redux can cause a rare fatal lung disorder called pulmonary hypertension. Essential reference tools, including a drug-interaction checker, medical calculators, and a pill identifier. You should not take Adipex-P if you have a history of heart disease coronary artery disease, heart rhythm problems, congestive heart failure, stroke , severe or uncontrolled high blood pressure, overactive thyroid, glaucoma, a history of pulmonary hypertension, if you are in an agitated state, or if you have a history of drug or alcohol abuse. How I'm Losing Weight
Follow all directions on your prescription label. Do not take this medicine in larger or smaller amounts or for longer than recommended. Talk with your doctor if you have increased hunger or if you otherwise think the medication is not working properly. Taking more of this medication will not make it more effective and can cause serious, life-threatening side effects. Do not stop using Adipex-P suddenly, or you could have unpleasant withdrawal symptoms.
Ask your doctor how to safely stop using Adipex-P. Keep track of the amount of medicine used from each new bottle. Phentermine is a drug of abuse and you should be aware if anyone is using your medicine improperly or without a prescription. Dosage Information in more detail. Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose.
Do not take extra medicine to make up the missed dose. Seek emergency medical attention or call the Poison Help line at An overdose of phentermine can be fatal. Adipex-P may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert. Get emergency medical help if you have any of these signs of an allergic reaction to Adipex-P: This is not a complete list of side effects and others may occur.
Call your doctor for medical advice about side effects. Side effects in more detail. In some cases it may be desirable to give half tablets Adipex-P is not recommended for use in pediatric patients under 17 years of age. Taking this medicine with other stimulant drugs that make you restless or hyperactive can worsen these effects.
Ask your doctor before taking Adipex-P with diet pills, other stimulants, or medicine to treat attention deficit hyperactivity disorder ADHD. Tell your doctor about all medicines you use, and those you start or stop using during your treatment with Adipex-P, especially:. This list is not complete. Other drugs may interact with Adipex-P, including prescription and over-the-counter medicines, vitamins, and herbal products.
Not all possible interactions are listed in this medication guide. Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use Adipex-P only for the indication prescribed. Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances. Dizziness , dry mouth , difficulty sleeping, irritability, nausea , vomiting , diarrhea , or constipation may occur.
If these effects persist or worsen, notify your doctor or pharmacist promptly. Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects. This medication may raise your blood pressure.
Check your blood pressure regularly and tell your doctor if the results are high. Tell your doctor right away if any of these unlikely but serious side effects occur: Stop taking this medication and seek immediate medical attention if any of these rare but very serious side effects occur: This drug may rarely cause serious sometimes fatal lung or heart problems pulmonary hypertension , heart valve problems. If you notice any of the following unlikely but very serious side effects, stop taking this medication and consult your doctor or pharmacist right away: A very serious allergic reaction to this drug is rare.
However, seek immediate medical attention if you notice any of the following symptoms of a serious allergic reaction: This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist. Call your doctor for medical advice about side effects. In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at List Phentermine HCL side effects by likelihood and severity.
Before taking this medication , tell your doctor or pharmacist if you are allergic to it; or to any other sympathomimetic amines e. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details. This medication should not be used if you have certain medical conditions. Before using this medicine, consult your doctor or pharmacist if you have: Before using this medication, tell your doctor or pharmacist your medical history, especially of: This drug may make you dizzy or blur your vision.
It may also rarely make you drowsy. Alcohol or marijuana can make you more dizzy or drowsy. Do not drive, use machinery, or do anything that needs alertness or clear vision until you can do it safely. Talk to your doctor if you are using marijuana. If you have diabetes , check your blood sugar regularly as directed and share the results with your doctor. Your doctor may need to adjust your diabetes medication during treatment with this drug.
If you are using the tablets made to dissolve in the mouth , your medication may contain aspartame. Kidney function declines as you grow older. This medication is removed by the kidneys. Therefore, elderly people may be at greater risk for dizziness and high blood pressure while using this drug. This medication must not be used during pregnancy. It may harm an unborn baby.
If you are pregnant or think you may be pregnant, tell your doctor right away. This drug may pass into breast milk and could have undesirable effects on a nursing infant. Therefore, breast -feeding is not recommended while using this drug. Consult your doctor before breast-feeding. What should I know regarding pregnancy, nursing and administering Phentermine HCL to children or the elderly? Your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them.
Do not start, stop, or change the dosage of any medicine before checking with them first. 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 e. Taking MAO inhibitors with this medication may cause a serious possibly fatal drug interaction. Avoid taking MAO inhibitors isocarboxazid , linezolid , methylene blue, moclobemide, phenelzine , procarbazine , rasagiline , safinamide, selegiline, tranylcypromine during treatment with this medication.
Most MAO inhibitors should also not be taken for two weeks before treatment with this medication. Ask your doctor when to start or stop taking this medication. Tell your doctor or pharmacist if you are taking other products that cause drowsiness such as opioid pain or cough relievers such as codeine, hydrocodone , alcohol, marijuana , drugs for sleep or anxiety such as alprazolam , lorazepam , zolpidem , muscle relaxants such as carisoprodol , cyclobenzaprine , or antihistamines such as cetirizine , diphenhydramine.
Check the labels on all your medicines such as allergy or cough -and-cold products because they may contain ingredients that cause drowsiness. Ask your pharmacist about using those products safely. Some products have ingredients that could raise your heart rate or blood pressure. Tell your pharmacist what products you are using, and ask how to use them safely especially cough -and-cold products or diet aids. Caffeine can increase the side effects of this medication. Avoid drinking large amounts of beverages containing caffeine coffee, tea, colas or eating large amounts of chocolate.
Make sure laboratory personnel and all your doctors know you use this drug. This document does not contain all possible interactions. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share the list with your doctor and pharmacist. Does Phentermine HCL interact with other medications? If someone has overdosed and has serious symptoms such as passing out or trouble breathing , call Otherwise, call a poison control center right away.
US residents can call their local poison control center at Canada residents can call a provincial poison control center.