Does Phentermine Cause Hair Loss Permanently? (and how to treat it)

  • By: dr thushankas
  • Date: August 22, 2023
  • Time to read: 5 min.

Phentermine, a weight loss medication, has become increasingly popular in recent years. However, like any medication, it can have side effects, including hair loss.

This has led to concerns regarding the permanence of the hair loss caused by Phentermine.

Here, we will explore the relationship between Phentermine and hair loss, as well as treatment options for those experiencing Phentermine-related hair loss.

Key Takeaways

  • Phentermine may cause hair loss as a side effect.
  • The hair loss caused by Phentermine may not necessarily be permanent.
  • There are various options for treating hair loss caused by Phentermine, including medical and non-medical approaches.
  • It is important to consult with a healthcare professional for personalized advice on managing hair loss caused by Phentermine.

Phentermine’s Effect on Hair

Phentermine is a medication used to aid with weight loss. While it can be effective, one of the potential side effects is hair loss. This side effect can be particularly concerning, as it can impact self-esteem and confidence. To understand why Phentermine causes hair loss, it’s important to explore the mechanisms behind it.

The Science Behind Hair Loss from Phentermine

Phentermine works by suppressing appetite and increasing metabolism. These effects can cause stress on the body, leading to nutrient deficiencies. Specifically, the medication can deplete levels of iron and zinc in the body. These minerals play a crucial role in hair growth and health. When levels are too low, hair can become thin, brittle, and prone to shedding.

Preventing Hair Loss While Taking Phentermine

Fortunately, there are steps that can be taken to limit the impact of Phentermine on hair. First and foremost, it’s important to ensure that you’re getting enough iron and zinc in your diet. Foods such as red meat, poultry, nuts, and leafy greens can provide these essential minerals. Additionally, consider taking a daily multivitamin to ensure that your body is getting all the necessary nutrients.

It’s also important to practice good hair care habits. Avoid tight hairstyles, like braids or ponytails, that can pull on the hair and cause breakage. Use a gentle shampoo and conditioner, and avoid using heat styling tools as much as possible.

If you’re still experiencing hair loss while using Phentermine, consider talking to your healthcare provider. They may be able to adjust your dosage or recommend additional supplements to support hair health.

Treating Hair Loss Caused by Phentermine

There are various ways to treat hair loss caused by Phentermine. While some may require medical intervention, others can be done at home. Here are some options to consider:

Hair Regrowth Treatments

One option to treat hair loss caused by Phentermine is to use hair regrowth treatments. Minoxidil is a topical treatment that is commonly used for hair regrowth. It works by increasing blood flow to the hair follicles and stimulating hair growth.

Finasteride is another medication that can be used to treat hair loss. It works by reducing the levels of dihydrotestosterone (DHT) in the scalp, which can cause hair loss. However, it is important to note that Finasteride is not FDA-approved for women and can cause birth defects in male fetuses if taken during pregnancy.

Nutrition and Supplements

Eating a balanced diet and taking supplements can also help promote hair growth. Foods rich in biotin, vitamin D, and iron can help strengthen hair. Supplements such as biotin, vitamin D, and omega-3 fatty acids can also help improve hair health.

Scalp Massage

Massaging the scalp can also improve blood flow and stimulate hair growth. Use your fingertips to massage your scalp in circular motions for a few minutes each day.

Avoiding Hair Damage

To prevent further hair loss, it is important to avoid damaging the hair. This includes avoiding tight hairstyles that pull on the hair, using heat styling tools sparingly, and using gentle shampoos and conditioners.

It is important to note that these treatment options may not work for everyone and it is best to consult with a healthcare professional for personalized advice.

Can Hair Loss from Phentermine Be Reversed?

The good news is that hair loss caused by Phentermine is usually not permanent and can be reversed. Once you stop taking the medication, your hair may start growing back. However, the exact timeline for regaining your hair may vary from person to person. It could take anywhere from a few weeks to several months for your hair to start regrowing.

While waiting for your hair to regrow, there are several ways to manage Phentermine-related hair loss:

  1. Take care of your hair: Make sure you are taking good care of your hair to avoid further damage. This includes using gentle shampoos and avoiding harsh styling products and tools.
  2. Consider hair regrowth treatments: There are various hair regrowth treatments you can use to help promote hair growth. These treatments include over-the-counter remedies like minoxidil and prescription treatments like finasteride. Make sure to talk to your healthcare provider before using any hair regrowth products.
  3. Eat a balanced diet: Eating a balanced diet with plenty of protein, vitamins, and minerals can help promote hair growth and overall hair health.

It’s important to consult with a healthcare professional for personalized advice on managing Phentermine-induced hair loss. They may recommend additional treatments or lifestyle changes based on your individual needs.


In conclusion, Phentermine can cause hair loss, but it is not usually permanent. While taking Phentermine, it is essential to take steps to prevent hair loss, such as using gentle hair care products and avoiding tight hairstyles that can damage the hair.

If you do experience hair loss while taking Phentermine, there are various treatment options available, both medical and non-medical. These treatments can help promote hair regrowth and manage hair loss caused by Phentermine.

It is important to note that the effectiveness of these treatments varies from person to person, and it is best to consult a healthcare professional for personalized advice.

If you are concerned about hair loss caused by Phentermine, do not hesitate to speak with your doctor. They can help you determine the best course of action to promote hair growth and manage any associated side effects.

Leave a Reply

Your email address will not be published. Required fields are marked *

Can Phentermine Cause Miscarriage? Everything to Know Explained

Previous Post

Can Phentermine Cause Miscarriage? Everything to Know Explained

Next Post

Phentermine Withdrawal Guide: Symptoms, Timeline, Fatigue

Phentermine Withdrawal Guide: Symptoms, Timeline, Fatigue