Top [3] OTC Phentermine Alternatives – Substitutes That Can be Bought Online in 2023

OTC Alternatives to Phentermine are legal supplements that are 100% safe, substitutes and are available over the counter or can be purchased online.

Phentermine comes with lots of side effects. After looking at the long list of side effects, anyone would think twice before trying to buy Phentermine.

So, what are the other options for weight loss open to you and me?

Well, I have come across a few legal Phentermine alternatives that are side effects free, safe, available over the counter and can be purchased online.

Here are my recommendations for the top 3 OTC Phentermine alternatives of 2023:

  1. PhenQ
  2. PhenGold
  3. Phen24

Top 3 Phentermine Alternatives - PhenQ, PhenGold, Phen24


Are Phen Substitutes as Effective as The Original?

But, why am I recommending these three instead of the many other fat burners? Are they as good as Phentermine?

I am recommending these because I have found these products to be designed specifically to provide Phentermine-like benefits, just without the side effects and are available without any prescription.

Out of all 3 products, I myself have tried PhenQ which is the most popular brand.

These recommended supplements can also be taken every day without worrying about their weight loss effects diminishing over time.

Note: You should expect that while they do provide the benefits of Phentermine, weight loss will take a little longer.

This is a tradeoff you’re going to have to live with to avoid the side effects of Phentermine.

Common Ingredients In Phentermine Alternatives

The Phentermine Alternatives I have recommended here have been specifically designed to provide accelerated fat burn.

The proprietary blends make use of legal, safe, and side-effect-free ingredients.

These ingredients have been clinically tested to promote weight loss and are found in several top weight-loss brands.

You should always be informed of what’s gone into the pills you will be taking.

So here, I have discussed some of the most popular and commonly found weight loss ingredients in supplements that can be taken instead of Phentermine.

1. Caffeine/Caffeine Anhydrous

All three of my recommended supplements contain Caffeine/Caffeine Anhydrous.

Phentermine Alternatives Contain Caffeine

If you have done any research into weight loss, you must have come across Caffeine.

I drink a cup of coffee every morning, and it kills the drowsiness and gets me in gear for work.

The reason for this is the caffeine in coffee provides the brain and body with a concentrated amount of energy.

Other than the energy-boosting benefits, it’s also a very active fat-loss ingredient.

Caffeine improves metabolism and activates thermogenesis. This means that your body temp rises and fat burn improves.

It’s most effective when taken before workouts where the increase in metabolism is most helpful.

In dietary supplements for fat burn, you usually get caffeine in the form of Caffeine Anhydrous.

Caffeine Anhydrous is a concentrated form of caffeine.

One teaspoon of this stuff is equivalent to 28 cups of coffee, according to the FDA.

So, I would expect more fat burn and accelerated weight loss with a supplement that contains Caffeine/Caffeine Anhydrous.

2. Cayenne Pepper

All of the recommended OTC Phen alternatives in this list contain Cayenne Pepper.

Phentermine Alternatives Contain Cayenne Pepper

Do you remember the last time you ate some spicy curry?

All I remember is that other than my tongue burning, I was sweating excessively and feeling my body heat up.

If you have had the same experience, it was probably the Capsicum or Cayenne pepper in your food.

This ingredient doesn’t just help make tasty food but is also very beneficial for weight loss.

The compound capsaicin in this pepper is what gives you the fat burn you want.

Capsaicin is a thermogenic chemical that increases internal body temperature by 1-2 degrees.

In supplements, the increase in temperature allows for improved weight loss, even when doing regular activities, not just when exercising.

Some supplements (like my number one pick) also use a proprietary formulation of cayenne pepper called Capsimax® Powder.

Its proprietary formula has a controlled release of the highly active capsicum extract.

The formula provides all the fat-burning benefits of Cayenne pepper without its associated burning sensation.

So, I would recommend trying supplements with Cayenne pepper for their unique thermogenic benefits.

3. Chromium

Chromium is found only in PhenQ and Phen24 Night Pill.


Phentermine Alternatives Contain Chromium

Have you tried OTC weight loss pills before?

If you have, one or more of these may have contained some form of Chromium.

The most common form used in dietary supplements is Trivalent Chromium (Chromium Picolinate).

This is a better absorbent form of Chromium and is classified as an essential trace element mineral.

Chromium is said to support blood glucose levels and insulin production.

Its athletic performance-boosting benefits are well-documented. These include an increase in energy levels, muscle gain, and fat loss.

Those of you who have to take insulin injections should talk to your doctor before using supplements with this ingredient.

That’s because Chromium lowers blood sugar levels, the same function as injected insulin.

Therefore, keep track of your blood sugar more closely if you take insulin and Chromium supplements together.

So, I found that while there are some cons of Chromium, its validity at fat loss is without question.

4. L-Carnitine

L-Carnitine is only available in PhenQ

Phentermine Alternatives Contain L-Carnitine

You will find that the majority of performance-boosting supplements in the market contain L-carnitine fumarate.

This is a stable form of the amino acid, L-carnitine. The naturally produced amino acid works to break down fat and provide more energy.

Here, the mitochondria of the cells get supplied with fatty acids which are broken down to produce energy.

This amino acid also helps improve your metabolism, blood sugar levels, muscle gain, stamina, endurance, and fatigue recovery.

Some manufacturers sell L-carnitine as an individual weight loss aid.

But know that this ingredient is only effective for weight loss when used alongside other fat-burning supplements or medications.

Taking the amino acid by itself is not going to give you the weight loss benefits you were promised.

So, I found that most premium weight loss pills come with this ingredient, indicating its effectiveness for fast fat loss.

The Top 3 OTC Substitutes for Phentermine

Below are the alternatives which I recommend as safe and side effects free.

1. PhenQ

PhenQ is the uncrowned king of weight loss pills at the moment. Its fast-acting fat loss benefits have helped thousands of men and women to reach their weight loss goals.

PhenQ Bottle

With the addition of proprietary formulas like α-Lacys Reset® and Capsimax® Powder, its fat burn has been supercharged.

The dosage of this supplement is 2 pills per day. This can be reduced to a single pill if the fat burn is too strong.

PhenQ Ingredients

  • Caffeine Anhydrous
  • Capsimax® Powder
  • Chromium (from Chromium Picolinate)
  • L-Carnitine Fumarate
  • Nopal
  • α-Lacys Reset®

Who Should Consider Getting PhenQ?

If you want to get the best weight loss experience, get PhenQ.

According to my evaluation, this is one of the best all-rounder fat burners in the market.

Like all my recommendations here, it’s only for adults.

While the dosage is two pills a day, this is easily manageable for most of us.

I would recommend this one to you if you are looking for a fast-acting weight-loss pill.

Why Is PhenQ My Number 1 Recommendation?

I found this to be the best legal OTC Phentermine alternative on the market.

This is because it’s got a lot of user reviews that have boasted about its results. It’s also got all four of my favorite weight-loss ingredients.

The all-natural supplement is also free from the side effects that plague Phentermine users.

Considering the overall benefits, ingredient list, reviews, and cost, I rated PhenQ as my number 1 recommendation.

2. PhenGold

PhenGold is a well-known fat burner and appetite-suppressing pill. It focuses on appetite suppression and thermogenesis for effective weight loss.

Ingredients included in PhenGold have also been clinically proven to aid in weight loss.


The lack of side effects has made this supplement very popular online.

PhenGold Ingredients

  • Caffeine
  • Cayenne Pepper
  • Green Tea
  • Green Coffee
  • L-Theanine
  • L-Tyrosine
  • Rhodiola Rosea
  • DMAE
  • Vitamins B3, B6, B12

Who Should Consider Getting PhenGold?

A good Phentermine alternative needs to have potent appetite-suppressing benefits. And this product is my pick for the very same reason.

For those of you who need help controlling eating urges, this is a pill to consider.

One thing I do not like about PhenGold is that its dosage involves taking 3 pills. While it’s not a big negative but some people may find it uncomfortable to eat 3 pills at a time.

The price of this pill is affordable, especially if you opt for multi-buy deals.

Why Is PhenGoldMy Number 2 Recommendation?

I liked this appetite suppressant to be fitting for my number 2 recommendation.

When I reviewed this product, the benefits were self-evident. It also promotes its zero-reported side effects, which is reassuring.

The unique solution is why this comes in at the number two spot. That’s because I know a lot of people who don’t like taking multiple pills at a time.

Overall, I felt that while PhenGold is in the second spot, it’s just as effective as PhenQ. I think it’s just a matter of personal choice for the user.

3. Phen24

Phen24 is a unique OTC weight loss product that has a separate Day and Night pill.

The Day pill activates thermogenesis and active-fat burn.

The Night pill concentrates on helping you lose weight passively. That’s done by increasing metabolism and suppressing eating urges.

Phen24 Bottles

The specially designed pills ensure that you get the ideal balance of ingredients to maximize fat loss.

The dosage for this product is one Day pill before breakfast and two Night pills before bedtime.

Phen24 Day Ingredients:
  • Caffeine
  • Cayenne Powder
  • Copper Sulphate
  • Guarana Extract
  • Iodine
  • Manganese
  • Phenylalanine
  • Zinc Citrate
Phen24 Night Ingredients:
  • Ascorbic Acid (Vitamin C)
  • Biotin
  • Choline Bitartrate
  • Chromium Picolinate
  • Glucomannan
  • Green Tea Extract
  • Griffonia Extract
  • Hops Extract
  • Molybdenum (Sodium Molybdate)
  • Pantothenic Acid (Vitamin B5)
  • Pyridoxine HCl (Vitamin B6)
  • Thiamine (Vitamin B1)

Who Should Consider Getting Phen24?

First off, this product requires you to take 3 pills a day: 1 in the morning and 2 at night.

If this is okay, then it’s all good from here.

The Day and Night pills are designed for optimal weight loss.

I found this intriguing and innovative in an industry where everyone’s selling you a total one-stop solution.

I found the weight loss benefits of this supplement to be satisfactory for an OTC Phentermine alternative.

Why Is Phen24 My Number 3 Recommendation?

Don’t scoff at Phen24 for coming in at number 3.  That’s because I have evaluated tens of products before coming up with this top 3 list.

That means this product performed with better results than many other similar products.

I liked the fact that the manufacturers went for specially designed formulas for day and night use.

The unique pills allow you to experience the weight loss benefits faster and with greater intensity.

So, as the name goes, Phen24 will give you weight loss 24 hours a day.

However, not everyone is okay with taking three pills a day.

So, my final rank for Phen24 is number three in my search for the legal OTC Phentermine alternatives.


Other Phentermine Alternatives

The other most common alternatives to Phentermine include

  • Adipex
  • Contrave
  • Diethylpropion
  • Lomaira
  • Mounjaro
  • Qsymia
  • Saxenda
  • Wegovy

Although these are popular, they may still have some side effects and won’t be available over the counter.

My Final Verdict On Legal OTC Alternatives to Phentermine

I am a firm believer in the philosophy of ‘the ingredients make the product.’

And this shows through in the Phentermine alternatives list.

PhenQ, my recommended product, has all four of the popular weight-loss ingredients I mentioned earlier.

It also promotes stable and effective weight loss from all angles. That too, without any side effects.

The pill also has well-known appetite-suppressing benefits. A reputable manufacturer and being widely popular online are additional benefits.

Overall, if you are looking for a potent weight loss aid that can replace Phentermine, go for PhenQ.

That said, all three of my recommended Phentermine alternatives will work as claimed.

So, if you pick PhenGold or Phen24, be at ease as you’re buying a quality OTC Phentermine alternative.



About Mikael Gomez

Mikael is a health nutrition expert and loves mountain biking. Mikael started his health product research journey in 2016 and still loves doing it. Apart from spending time on his study, research & literature, he plays basketball regularly and is a fitness freak. Follow Mikael on Linkedin