Rx · Prescription required · Schedule IV controlled
Phentermine
Adipex-P® · Lomaira®
FDA-approved as a short-term (a few weeks) addition to diet and exercise for adults with obesity, or overweight with weight-related risk factors.
- Drug class
- Sympathomimetic amine (appetite suppressant)
- How it is given
- Tablet or capsule, once daily
- Prescription
- Required
- Dispensed by
- DiRx Inc. · licensed pharmacy
FDA status: Adipex-P® and the other brand-name versions listed are FDA-approved medicines. Generic versions, where available, are FDA-approved equivalents. This is a controlled substance; it is prescribed and dispensed only within federal and state rules.
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Pricing is shared after you speak with our team and a licensed doctor approves treatment. Clinics see pricing after account verification.
Important safety information
Phentermine is a prescription medicine. It is not right for everyone: heart disease, uncontrolled high blood pressure or overactive thyroid; glaucoma; history of drug misuse; pregnancy or breastfeeding; use within 14 days of an MAO inhibitor. Tell your doctor about every condition you have and every medicine and supplement you take.
Common side effects are described below. Stop and seek care for any severe or unexpected reaction. This page is education, not medical advice; your doctor and pharmacist give the instructions for your treatment.
How to get started
- Message us on WhatsApp or call (954) 420-7747.
- Talk with a licensed doctor, who reviews your health history and decides if this medicine is right for you.
- If prescribed, our team shares pricing and a licensed pharmacy fills your order.
Plain-language guide
Phentermine, explained by our clinical team
What it is
Phentermine has been prescribed for weight loss in the United States since 1959. It reduces appetite by raising noradrenaline activity in the brain, which is why it is a stimulant-type medicine and a controlled substance.
It is intended for short-term use to help start a program, not for years of continuous treatment. Our doctors use it selectively and always with a plan for what comes next.
FDA-approved uses
- Short-term weight management in adults with a BMI of 30 or more, or 27 or more with risk factors such as high blood pressure, diabetes or high cholesterol
Our doctors prescribe for approved uses. Any other use is a decision made only by your doctor, for you, after evaluation.
How it is taken
One dose in the morning or before breakfast. Lomaira® 8 mg can be taken up to three times a day before meals. Avoid late-day doses to protect sleep.
What to expect
Reduced appetite and more energy, often with a faster heartbeat, dry mouth, restlessness or insomnia. Blood pressure is checked before and during treatment.
Who should not take it
- Heart disease, uncontrolled high blood pressure or overactive thyroid
- Glaucoma
- History of drug misuse
- Pregnancy or breastfeeding
- Use within 14 days of an MAO inhibitor
Questions we hear
Why is it short-term only?
The approval is for a few weeks because longer studies were not part of the original label and tolerance can develop.
Is it addictive?
It is related to amphetamine and has misuse potential, which is why it is Schedule IV.
Can it be combined with a GLP-1?
Combinations are an individual medical decision made by your doctor.
Real molecular structure
The molecule: Phentermine
Drag to rotate. Every atom and bond below comes from the public PubChem database of the U.S. National Institutes of Health; nothing is drawn by AI.
- Formula
- C10H15N
- Molar mass
- 149.2 g/mol
- Heavy atoms
- 11
- PubChem CID
- 4771 ↗
Source: PubChem, National Library of Medicine (public domain).
Watch & learn
Videos: how it works and how it is used
Independent videos from doctors, hospitals and health educators on YouTube. They are for general education; your doctor gives the instructions for your treatment.
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Drugs.com · YouTubeOzempic is a game-changer. Here’s how it works.
Vox · YouTubeWhat Ozempic & Weight Loss Drugs Really Do to the Body
Institute of Human Anatomy · YouTubeEndocrinologist shares MUST KNOW tips when starting RYBELSUS
Dr. Akshay Jain · YouTubeOther treatments
Semaglutide
Ozempic® · Wegovy® · Rybelsus®FDA-approved for type 2 diabetes (Ozempic®, Rybelsus®) and for chronic weight management and cardiovascular risk reduction in eligible adults (Wegovy®).
Price after approval
Tirzepatide
Mounjaro® · Zepbound®FDA-approved for type 2 diabetes (Mounjaro®) and for chronic weight management and obstructive sleep apnea in adults with obesity (Zepbound®).
Price after approval
Liraglutide
Victoza® · Saxenda®FDA-approved for type 2 diabetes (Victoza®) and chronic weight management (Saxenda®); generic versions are now available.
Price after approval
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