Phentermine 37.5 mg is a medication in the United States and cannot be purchased legally over the counter. Because it is classified as a Schedule IV controlled substance, you must obtain it through a licensed medical professional and a reputable pharmacy. Here is how you can safely and legally obtain phentermine:

: To find the best price at local pharmacies, check comparison tools like GoodRx , which often provides coupons that significantly lower the out-of-pocket cost.

: Schedule an appointment with your primary care doctor or a weight-loss specialist. They will evaluate your BMI and health history to determine if the medication is safe for you.

: If approved, your doctor will issue a prescription. You can fill this at major retail pharmacies such as CVS Pharmacy, Walgreens, or Rite Aid.

Avoid websites that offer to sell "real phentermine" without a prescription. These are often illegal, and the products may be unsafe or contain different ingredients than advertised Yahoo Finance .