Hi,
Welcome to HCM,
You are
overweight and want to lose ,this is good,You have to take care of your diet and exercise after full medical check up.
A combination of low calories in diet and exercise to burn calories is the secret of long term
weight loss.
The tablet is question is
Phentermine which is sympathomimetic and
appetite suppressant but has lot many side effects to name some are light-headedness, fainting or headache,Increased blood pressure,Agitation and aggression,Weakness,Fast or irregular heartbeat there are other effects too.
Please visit a Good Physician and after full check up if everything is fine follow diet and exercise.
Orlistat is one drug which helps in weight loss by preventing fats to provide calories which you will get if required through prescription.
I wish good luck to be successful in losing weight and have healthy life
.You can ask me at http://www.healthcaremagic.com/doctors/dr-akhilesh-dubey/63985
Take care
Good Luck
Dr. Akhilesh Dubey M.D.