Phentermine is a prescription weight loss medication. It was approved by the FDA in 1959 for short-term use of up to 12 weeks for people older than 16 ().In the 1990s, phentermine was combined. Phentermine and topiramate was developed by Vivus, a California pharmaceutical company. In December 2009 VIVUS, Inc. submitted a new drug application (NDA) to the FDA and on March 1, 2010, VIVUS, Inc. announced that the FDA accepted the NDA for review. Phentermine is a Schedule IV drug, a classification given to drugs that have a potential for abuse, although the actual potential appears to be low. Common side effects of phentermine include: Increased heart rate; Tingling or prickling feeling in hands or feet; Dry mouth; Sleeplessness; Nervousness ; Constipation; Although phentermine is one of the most commonly prescribed weight-loss. Phentermine is used with a doctor-approved exercise, behavior change, and reduced-calorie diet program to help you lose weight.It is used by certain overweight people, such as those who are obese. Phentermine gave me the strength to ignore the cravings and focus on discovering a healthier me! Michelle C. Is has been a struggle to lose weight my entire life but with the help of Dr. James Kojian and Drtohelp.com, I have been able to curb any cravings and have so much energy to take control of my life. It's has given me the boost I have needed to push past the plateau you often face and. Phentermine is used together with diet and exercise to treat obesity, especially in people with risk factors such as high blood pressure, high cholesterol, or diabetes. Phentermine may also be used for purposes not listed in this medication guide. Warnings. Do not use phentermine if you are pregnant or breast-feeding a baby. phentermine decreases effects of captopril by pharmacodynamic antagonism. Use Caution/Monitor. Phentermine may decrease the antihypertensive effect of ACE Inhibitors. carbinoxamine. carbinoxamine increases and phentermine decreases sedation. Effect of interaction is not clear, use caution. Use Caution/Monitor. chloral hydrate Phentermine is the most widely-prescribed weight-loss medication in the United States. It first received FDA approval in 1959 as an appetite suppressant for the short-term management of obesity. Phentermine helps patients lose weight by decreasing appetite and boosting energy. The medication’s active ingredient, Phentermine Hydrochloride (Phentermine HCl), is a sympathomimetic amine. Find information about common, infrequent and rare side effects of phentermine-topiramate oral Phentermine hydrochloride, an anorectic agent for oral administration, is available as a tablet containing 37.5 mg of Phentermine hydrochloride (equivalent to 30 mg of Phentermine base). Each tablet contains the following inactive ingredients: starch, lactose anhydrous, microcrystalline cellulose, colloidal silicon dioxide, stearic acid, magnesium stearate and blue sugar spheres.