The presence of other medical problems may affect the use of phentermine (or other appetite suppressants).
Inform your doctor if you suffer from, or have ever suffered from:
Notify your doctor if you have ever had any unusual or allergic reaction to:
Also be sure to tell your doctor if you have used a Monoamine Oxidase (MAO) inhibitor within the last 2 weeks.
It is not known if phentermine causes birth defects in humans and is considered pregnancy category X by the FDA.
Prior to taking this medication, tell your doctor if you are pregnant or attempting to become pregnant.
Alcohol - Alcohol may increase unwanted side effects, including dizziness. Therefore, it is advisable to avoid alcohol while taking phentermine (or other appetite suppressants).
Diabetes - Phentermine may affect blood sugar levels. If you are have diabetes and notice a change in the results of your urine or blood sugar test, or if you have any questions or concerns, consult your doctor.
Hyperthyroidism - Phentermine and other appetite suppressants may worsen the condition.
Kidney disease- The chance of serious side effects may increase due to higher blood levels of phentermine.
Driving and hazardous work - Phentermine and other appetite suppressants may cause some people to feel a false sense of well-being or to become dizzy, lightheaded, drowsy, or less alert than normal. Do NOT drive or engage in hazardous work until you know how the medicine affects you.
Surgery, dental treatment, or emergency treatment- Taking phentermine in conjunction with medicines that are used during surgery or dental or emergency treatments may cause serious side effects. Prior to surgery or treatment, inform the doctor or dentist that you are using this medicine.
Certain medicines should never be used together. However, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary.
When you are taking phentermine or other appetite suppressants, it is important that you inform your doctor if you are taking any of the following medications.
Other stimulants, such as:
Other diet pills or selective serotonin reuptake inhibitors (SSRIs), such as:
These medicines in conjunction with sympathomimetic appetite suppressants may increase the central nervous system (CNS) stimulant effects, such as irritability, nervousness, trembling or shaking, or trouble in sleeping.
Phentermine (or any other appetite suppressant) taken in conjunction with or less than 14 days after taking a monoamine oxidase (MAO) inhibitor may suddenly provoke extremely high blood pressure. Monoamine oxidase inhibitors (MAOIs) include:
Using these medicines with sympathomimetic appetite suppressants may cause high blood pressure or irregular heartbeat. Tricyclic antidepressants include:
Adults age 60 and over - There is no specific information comparing the use of appetite suppressants in the elderly with use in other age groups. Therefore, it may not be known if they work in exactly the same way they do in younger adults, or if they cause different side effects or problems in older people.
Adverse reactions may be more likely and more severe in older patients, especially when taken in combination with drugs that act on the central nervous system.
Infants and children - Phentermine and other appetite suppressants are NOT recommended for use by children under age 18. Studies on appetite suppressants have been done only in adult patients, and there is no specific information comparing use of Sympathomimetic appetite suppressants in children with use in other age groups.
Breast feeding women - Use of phentermine (or other appetite suppressants) while breast-feeding is NOT recommended, The medication may pass into breast milk, causing unwanted effects in nursing babies. Please consult your doctor for weight loss advice if interested.
Keep this and all medications out of children's reach.
Store away from heat and direct light.
Do NOT store in the bathroom, near the kitchen sink, or in other damp places. Heat or moisture may cause the medicine to break down.
Do NOT keep outdated medicine past the expiration date. Discarded medicine should be kept out of children's reach.