Phentermine is typically taken an hour or two after breakfast. This helps to ensure the medication is properly absorbed. Some brands, such as Subprenza, can be taken with or without food. However, it also allows the stimulant effects time to wear off before going to bed. It is advised to never take it after 6:00 PM. This has the potential to cause serious insomnia. While it is generally taken one time per day, it can also be taken twice a day for some people. This is either for an individual to be able to take a larger dose than Phentermine 37.5 mg or to be able to split their dose to minimize side effects.
Phentermine 37.5 mg is well tolerated by most healthy adults, but there are some people that are not able to take it. If you suffer from high blood pressure or other cardiovascular problems, you will not be able to take Phentermine 37.5 mg or any other dose of it. If you have diabetes, kidney disease, allergies to aspirin, yellow food dyes, or thyroid problems, you will not be able to take phentermine 37.5 mg or any other dosages of the medication.
Also, if you are under 16, you will not be able to take phentermine 37.5 or any other dose of the medicine. Phentermine 37.5 and all doses of the medication are also unsuitable for those with glaucoma, an allergy to stimulants, cold medications, diet pills, or amphetamines. Phentermine 37.5 and all other doses of the medication are also not suitable for those in an agitated state or those with a history of substance abuse. Phentermine 37.5 and other dosages of it aren't suitable for pregnant or breast feeding women.
For this reason, it is important to talk to your doctor about any medical conditions that you have before asking him or her about the phentermine 37.5.