PHENTERMINE (Oral) (Tablet)

Questions | Reviews *****

Safety of Phentermine

I have been taking phentermine to help with weight loss and have lost 25 pounds so far. It is very helpful to me. A friend asked her pharmacist if phentermine was safe, as she had been a fen-phen user back in the 90's and was justifiably hesitant, and...
by Tracey E in Burlington, NC, 02/02/2006

Can you take Phentermine and SSRI's together?

I was wondering if you can take Phentermine and Lexapro together. I did a check for it in the phamaceutical monographs for these two drugs and it said that Phentermine HCl and Lexapro may interact based on the potential interaction between PHENTERMINE...
by Jill P in Houston, Tx, 11/03/2005

PHENTERMINE (Oral) (Tablet) Drug and Prescription Information

PHENTERMINE (Oral) (Tablet)

PHENTERMINE (Oral) (Tablet) Medication Classification


PHENTERMINE (Oral) (Tablet) Brandname

Ionamin, Phentercot, Phentride, Fastin, Adipex-P, Pro-Fast SR, Pro-Fast HS, Atti-Plex P Tablet #1, Pro-Fast SA

PHENTERMINE (Oral) (Tablet) is used for the Treatment

Phentermine (FEN-ter-meen) Used as part of a diet plan to help you lose weight.

When To Not Use PHENTERMINE (Oral) (Tablet)

You should not use this medicine if you have had an allergic reaction to phentermine or a bad reaction to other diet pills or amphetamines. You should not use this medicine if you have problems with drug abuse, high blood pressure, heart disease, overactive thyroid, severe anxiety or glaucoma. You should not use phentermine if you have taken an MAO inhibitor (such as Parnate®, Marplan®, or Nardil®) in the past 2 weeks.

How Should You Use PHENTERMINE (Oral) (Tablet)

Tablet, Capsule, Long Acting Capsule

  • Take this medicine exactly as your doctor ordered.
  • Take the tablet or capsule 1 hour before meals. To avoid trouble sleeping, take the last dose of the day about 4 to 6 hours before bedtime (unless your doctor tells you differently).
  • Swallow the extended-release capsule whole. Do not break, chew, or crush. To avoid trouble sleeping, take your daily dose in the morning (unless your doctor tells you differently).
  • If a dose is missed:
  • If you take 1 dose a day, take the missed dose as soon as possible. If you do not remember until the next day, skip the missed dose and just take your one usual dose for the day.
  • If you take more than 1 dose a day, take the medicine as soon as possible. If it is almost time for your next usual dose, wait until then to take your medicine and skip the missed dose.
  • You should not use two doses at the same time.

Proper PHENTERMINE (Oral) (Tablet) Storage

Store PHENTERMINE (Oral) (Tablet) at room temperature away from sunlight and moisture unless otherwise stated by manufacturer's instructions or labelling. Keep PHENTERMINE (Oral) (Tablet) and all medications out of the reach of children.

What To Avoid While Using PHENTERMINE (Oral) (Tablet)

Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.

  • Make sure your doctor knows if you are taking amantadine, amphetamines (Dexedrine®), cocaine, pemoline (Cylert®), methylphenidate (Ritalin®), other diet pills, medicine for asthma, allergies, or colds.
  • Tell your doctor if you have taken an MAO inhibitor such as Marplan® or Parnate® within the past 2 weeks.
  • Avoid alcohol and caffeine while taking this medicine.

PHENTERMINE (Oral) (Tablet) Warnings

  • Check with your doctor before taking this medicine if you have Tourette's syndrome, depression, nervousness, epilepsy (seizures), kidney disease, diabetes, or a history of drug or alcohol abuse.
  • Phentermine may be habit-forming. You may have withdrawal symptoms such as stomach pain, trembling, severe depression, extreme weakness or tiredness, and anxiety after you stop taking this medicine.
  • If you have taken this medicine for a long time, do not suddenly stop taking it. Talk to your doctor first.
  • If the medicine does not seem to work as well after a few weeks, talk to your doctor. You should not use more of it than your doctor prescribed.
  • This medicine may make you dizzy or feel "high." Be careful if you are driving a car or using machinery.
  • For patients with diabetes, this medicine may change the level of sugar in your blood or urine. Tell your doctor if your tests for sugar in blood or urine change.
  • Talk with your doctor before use if you are pregnant or breastfeeding.
  • Tell your doctor or dentist that you are taking phentermine before having any kind of surgery.

PHENTERMINE (Oral) (Tablet) Side Effects

Call your doctor right away if you notice any of these side effects:

  • Fast, pounding, or irregular heartbeat
  • Chest pain
  • Severe headache
  • Trouble breathing
  • Skin rash, severe itching or hives
  • Unexplained fever or sore throat
  • Blurred vision, confusion, or hallucinations
  • Uncontrolled body movements or seizures
  • If you notice these less serious side effects, talk with your doctor:
  • Restlessness, trembling, or nervousness
  • Changes in sex drive
  • Trouble sleeping or headache
  • Diarrhea or constipation
  • Bad taste in the mouth or dry mouth
  • Increased sweating
  • Nausea, vomiting or stomach cramps

PHENTERMINE (Oral) (Tablet) Ratings

Overall Rating:



(based on 2 reviews)



Ease of Use:


Overall Satisfaction:




PHENTERMINE (Oral) (Tablet)

Effectiveness: *****

Ease of Use: *****

Overall Satisfaction: *****


Denise, chicago - 02/25/2009

After one week of taking Phentermine, I went from 335 pounds down to 320 pounds and all of my side effects are gone. If I wanted to, I could go the entire day without eating but I am working to shed the excess weight in a healthy way. Since my brain is not constantly telling me to eat, I have time to realize that my overeating was caused by low self esteem and loneliness. Now I watch my portion sizes and what I'm eating. Since shedding 15 pounds in one week, I feel great and am very proud of myself. My goal is 180 pounds and I am determined to reach my goal!

PHENTERMINE (Oral) (Tablet)

Effectiveness: *****

Ease of Use: *****

Overall Satisfaction: *****


Martin Wilson, montana - 01/21/2008

I have lost 15lbs in 45 days. I simply do not feel hungry so I am eating less. The first time I took it I had some issues and the doc suggested I break the pill in half. It has worked perfect since.