Side Effects

Side effects of phen 30 include blurred vision, dizziness, dry mouth, sleeplessness, nervousness and constipation, reports the Mayo Clinic. Because it causes blurred vision and dizziness, avoid driving or operating heavy machinery until you know how phen 30 affects you.

Blood Pressure

When taken within 14 days of taking a monoamine oxidase inhibitor (MAOI) drug, phen 30 poses a risk for potentially life-threatening elevations in blood pressure levels, according to the National Library of Medicine. It is also not safe to combine phen 30 with other prescription drugs for weight loss or dietary supplements meant to help you lose weight.

Dependence

Because phentermine is a type of amphetamine, phen 30 may cause psychological dependence in some patients. If this occurs, abrupt cessation of use may cause severe withdrawal symptoms like fatigue, depression and sleep disturbances, reports the National Library of Medicine.

Warning

Phen 30 use may rarely result in primary pulmonary hypertension (a type of lung disease) or a heart condition known as regurgitant cardiac valvular disease, both of which are potentially life-threatening.

Considerations

Doctors rarely prescribe phen 30 for pregnant women because its effects on fetal development are unknown. If you have a history of chemical dependence, heart disease, hypertension, hyperthyroidism or glaucoma, it may not be safe for you to take phen 30, cautions the Mayo Clinic.

Source:

National Library of Medicine: Phentermine hydrochloride

Mayo Clinic: Phentermine