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Bontril Review - 16 Things You Need to Know

We’ve heard a lot of buzz about Bontril, so we dug deep and created a comprehensive review, closely examining the side effects, ingredients, clinical studies and level of customer care. We also focused on hundreds of user responses that are posted online. Finally, we compressed and summarized to give you the bottom line.

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What is Bontril?

This prescription medication promotes weight-loss by stimulating the central nervous system and suppressing appetite. Bontril falls into the class of anorexigenic, anorectic and appetite suppressants. Bontril ingredients include:

  • Phenmetrazine tartrate
  • Magnesium stearate
  • Lactose anhydrous
  • Sodium starch glycolate
  • Confectioner’s sugar
  • Compressible Sugar
  • Water

what is bontril

Bontril acts as a stimulant for the central nervous system and is prescribed by a physician to users who are exercising regularly and dieting. The FDA may approve Bontril, but it’s not a magic weight-loss drug. It’s important to have the proper supervision of healthcare specialists before taking it.

How Did Bontril Start?

Bontril was created to be a pharmaceutical company, known as Valeant Pharmaceuticals in the year 1960. The primary ingredient, phendimetrazine, was discovered in Germany in 1954. The FDA approved it in the year 1960. The patent for Bontril has already expired – still, the Bontril diet pill is one of the most popular prescription drugs for weight management in the USA today. It can be found elsewhere in various generic names like:

  • Tenuate
  • Adipost
  • Statobex
Bontril Customer Testimonials

Bontril Claims

Bontril diet pills, also known as phendimetrazine, claims to be one of the most “efficient appetite suppressants.”

Other claims floating around are:

  • A powerful drug for losing weight
  • As potent as amphetamine
  • A meal replacement
  • Once-a-day medication for weight loss

bonitril ingredients


Bontril Ingredients

Let’s take a closer look at the components in this supplement and see if we can’t better understand how it works and if science backs up the claims.

Phendimetrazine Tartrate

This ingredient is the meat and potatoes of the drug. A doctor usually prescribes it along with exercise, change in behavior and a calorie-reduced diet.

Surprisingly, there isn’t much research on this ingredient. The American Journal of Therapeutics talks about phendimetrazine tartrate, but only to point out an adverse reaction. “Rhabdomyolysis is a potentially life-threatening complication reported with higher doses of amphetamines. We present a case of rhabdomyolysis and myoglobinuria developing in a 23-year-old patient after oral administration of phendimetrazine tartrate for 3 days in suggested therapeutic doses.”

Magnesium Stearate

This white, water-soluble powder is a magnesium salt of stearic acid, often used as an “anti-adherent” to keep the ingredients from sticking to equipment during the manufacturing process. According to Toxicology Reports, this ingredient is added in many supplements.

There’s also some controversy surrounding this ingredient. It can also cause some severe side effects, which we’ll get to a bit later on.

Lactose Anhydrous

This “inactive ingredient” is milk sugar found in dairy products like cheese, milk and cream. It has no medicinal properties, but it’s important to talk about it since users who are lactose intolerant can experience unwanted side effects from taking a supplement containing this ingredient.

Does Bontril Work?

Like we mentioned before, there is no concrete evidence as to whether this drug will help you curb hunger or burn fat. The diet pill Bontril is a doctor prescribed drug. Pharmacists often recommend it for weight management and its use is intended for a shorter duration of time. So, what we do know is – it can never be a long-term solution for weight loss. Also, there several side effects of Bontril – which, again, we’ll get to in a little bit.

bontril complaints

Customer Complaints

Bontril Customer Complaints

If there’s one way to determine whether a supplement is worth trying – it’s the customer comments. In this case, the mixed reviews were leaning a bit to the negative side. First, let’s take a look at the positives:

Another user reported that there was an increase in the level of alertness and energy in their body – but this experience was not shared by everyone.

A vast majority of users complained about the negative side effects. One individual pointed out the habit-forming tendencies of the drug. Others were unhappy with the adverse effects. We list the side effects of Bontril later one in the review.

Benefits & Results

Bontril Benefits and Results

Nowadays, when people are incredibly conscious about health fitness and weight loss, we’re all clamoring for the “next best drug.” In this case, there isn’t much science backing it, so we have to rely on customer reviews, claims from the manufacturer and opinions from medical professionals. Some of the benefits of Bontril are:

  • It helps increase your heartbeat and maintains a healthy circulatory system
  • It suppresses appetite and reduces the level of hunger in an individual
  • Bontril works alongside exercise and diet – only if taken for a short duration of time
  • It gives the user focus
  • Increases energy levels

The list can go on and on forever, and we’ll still be taken aback by the potential side effects. In our opinion, it’s never worth it, especially with so many negative user comments.

When users, under the supervision of a doctor, take a diet pill in the short-term with exercise and lifestyle changes – it’s possible to experience weight loss. We just feel that there are safer alternatives out there with more natural ingredients and much better scientific research.

bontril weight-loss

Details on Bontril And Weight Loss

The main reason a doctor prescribes Bontril is for helping obese patients shed serious pounds. We all want to see the science behind the main ingredient, but all that seems to be out there is “interactions”, and “side effect” information.

It’s said that, if used correctly, it can help reduce weight, which reduces other health risks.

Eating and Weight Disorders did a study on Bontril (along with other weight-loss medications) saying that “This weight loss program using a combination of MMRS and ASM produced significant and sustained weight losses at 52 weeks. Results were better than those typically reported for obesity pharmacotherapy in both short- and long-term studies and also better than those reported for partial meal replacement programs.”

Since Bontril is so closely related to amphetamines, we can dive into some of the research surrounding this drug, as well as others like it.

A serotonin-noradrenaline reuptake inhibitor, Sibutramine, was put to the test by the Journal of Human Hypertension. They wrote that “A statistically significant mean increase of 5.6 bpm (±8.25, s.d.) in supine PR from a baseline of 62 bpm was reported in sibutramine-treated patients at week 12, whereas placebo-treated patients had a mean supine PR decrease of 2.2 bpm (±6.43) (P < 0.001). In summary, sibutramine was well tolerated and effective in weight reduction.”

Where to Buy

Where to Buy Bontril

Phendimetrazine can be purchased for around $15 on sites like Amazon and in stores like Walgreens and CVS.


How to Take Bontril

Bontril must be taken orally, once daily, before meals. Also, proper assistance must be taken from the doctors before consuming it. You should also take the drug at least an hour before breakfast. It’s important that the medicine is swallowed completely -do not break or crush the capsules. Crushing the pills may destroy the action of the drug and increase the side effects to a huge extent.

The dosage must be appropriately prescribed by a doctor depending on the clinical condition and response of the individuals. Additionally, it’s suggested you consume the medication regularly and don’t stop abruptly without a doctor’s consent.

The possible side effects of Bontril and interaction of the medicine with other drugs must be taken into consideration properly before using the capsule but is something your doctor will most likely discuss with you.

Bontril Side Effects

Side Effects

Possible Bontril Side Effects

This one can get a bit serious. The phendimetrazine oral capsule has some seriously unwanted side effects. It’s important that individuals are aware of these conditions so that proper medical attention is taken into consideration if such things occur. Some possible side effects include:

  • Dry mouth
  • Diarrhea
  • Indigestion
  • Flushing
  • Impotence
  • Tremors
  • Restlessness
  • Headache
  • Dizziness
  • Low sex drive

An overdose of Bontril can cause, according to Toxnet:

  • Abdominal cramps
  • Lack of consciousness
  • Blurred vision
  • Diarrhea
  • Discouragement
  • Dizziness or lightheadedness
  • Irregular heartbeat
  • Low sexual drive
  • Tiredness
  • Lack of concentration and focus

Bontril and Caffeine

Coffee is the most popular beverage in the world, but it’s important to remember that the intake of caffeine increases the risks of side effects. It’s strongly suggested that while using this medicine you don’t consume a lot of foods and beverages with high caffeine content.

Product Warnings

Bontril Product Warnings

Professionals suggest that pregnant women should not use Bontril. Also, people with history of alcohol and drug abuse should not consume Bontril at all.

There are a lot of side effects associated with the drug, so it’s wise not to take Bontril for a prolonged period. 2 to 3 weeks is the maximum time limit for which the product should be used. Taking Bontril may also lead to addiction. It’s also recommended not to double the dosage of the product.

You may experience symptoms including tiredness, restlessness, blurred vision and many more. So, if you face any of these withdrawal symptoms, it’s highly suggested that you consult your doctor immediately.

The Dangers of Amphetamines

Lots of people around the world take amphetamines for weight loss, and many of them underestimate the dangers. Just because amphetamines are prescribed by a doctor, doesn’t mean they aren’t potentially dangerous. With a drug like amphetamine and those similar, it’s important to talk with your doctor and to discuss the potential side effects before taking it. Amphetamine overdoses can happen, as well as dependencies, and organ damage.


It’s said that amphetamine use over a long period can cause severe depression when not taking the drug. This happens when the storage of a user’s neurotransmitters are depleted. These neurotransmitters control our ability to feel happiness and pleasure.


As these stimulants are typically prescribed as appetite suppressants, sustained amphetamine use drastically slows the digestive process. Experts say that users can get caught up abusing the drug, they may overlook what they’re eating – or not eating…After some time, malnutrition can become a problem.


As you already know by now, Bontril and amphetamines can be addictive. Prolonged use of amphetamines can lead to a tolerance of the drug. This makes the user require more of it. This vicious cycle continues until the user is completely addicted and needs to seek immediate medical care.

bontril alternatives

Bontril Alternatives

Bontril alternatives include:

  • Orlistat
  • Benzphetamine
  • Lorcaserin

What Users Are Saying

“Took my first one after lunch and had no appetite the rest of the day.”

“…it made me ridiculously irritable, and mean all the time but I did lose 15 lbs on it.”

“I lost 6 pounds on the first week of taking Bontril, then no more lost. I didn’t have cravings at first but after 3 weeks I am hungry again.”

Bottom Line

The Bottom Line on Bontril

Well now, has the time come to rush out for this one? It’s good to see that Bontril is regulated by doctors and pharmacists. This way you do not have to worry about the correct dosage. Then again, we are certainly leery of all the side effects that can occur while taking this drug. You should also be aware that Bontril is only intended to be used for a short period of time, so it’s not a long-term solution for weight management.

Bontril Cons:

  • Way too many possible side effects
  • Too many restrictions
  • An addictive drug
  • Lack of solid research for weight loss

If you’d like to see more significant fat loss results, we advise you to go with a diet program that is backed by solid clinical research and doesn’t require a prescription.

Among the best weight-loss plans we’ve ever seen this year is one called Noom. Get this – the diet program offers you human coaching, personalized meal plans, extensive food tracking, and more. Plus, people are seeing great results.

Also, Noom is offering all Dietspotlight readers a free trial, which is a very good sign.

Learn More About Noom »
Bontril Review
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What are the side effects of Bontril?

Bontril side effects may include increased heart rate, increased blood pressure, insomnia, headaches, and constipation.

What are the ingredients in Bontril?

Bontril ingredients are similar to amphetamine.

Does Bontril work?

Some users say they were successful with Bontril, and it is regulated by the FDA. Some studies show it as an effective way to treat obesity.

How much does Bontril cost?

The cost varies based on your health insurance plan, and your prescription drug copay.

What is Bontril's BBB rating?

There is no BBB rating.

How should I take Bontril?

The dose is regulated by your doctor, but typically, you take it once a day, in the morning, 30 to 60 minutes before breakfast.

Can I get this medicine without a prescription?

No. It is a controlled substance, so a prescription is required.

Does Bontril come with a guarantee?

No, it does not, since it is a prescription medication.

One weight-loss supplement that has people excited is Dietspotlight Burn. It’s made with a blend of clinically tested ingredients known to support faster metabolism, and you can get it without a prescription.

What is Bontril prescribed for?

Bontril is available by prescription to assist in promoting weight loss when paired with a healthy diet plan and lifestyle. It works by suppressing the appetite and is only meant to be used short-term, due to the fact that it is a central nervous system stimulant.

Is Bontril a controlled substance?

Bontril is chemically related to a classification of drugs called amphetamines. When taken improperly, it may cause skin sores, hyperactivity, personality changes, insomnia, and even psychosis similar to that present in schizophrenia patients. Thus, it is considered a Schedule III controlled substance and only available by doctor’s prescription.

What does Bontril do?

Brontil helps patients to lose weight that cannot otherwise be lost through diet and exercise alone. It works by stimulating the central nervous system, increasing heart rate and blood pressure, and suppressing the appetite so that patients find it easier to adjust to a low-calorie weight loss diet.

What is Bontril PDM?

Bontril PDM is also known as phendimetrazine tartrate. It is a controlled medication that can be combined with nutritional, fitness, and lifestyle changes in order to help patients lose weight when traditional methods of weight loss are not effective.

18 Bontril Reviews

  • Loved the product.
    Khloe (Verified Purchase)

    I am 36 yrs old, and weighed in at 160 pounds when my doctor prescribed these for me. I’ve been taking the generic bontril for nearly 4 weeks, and I’ve lost 23 pounds so far. The first three weeks I did not exercise although I definitely had the energy, but too many obligations. After 3 solid weeks I began exercising for about an hour, three times a week. So hopefully that’ll kick things up a notch. The energy is crazy. I have to force myself to slow down at times. So I would Definitely recommend this as an appetite suppressant, mood and energy lifter. I plan to stop taking it after my next bottle is gone-so basically another month or so. Slightly worried about having those possible withdrawal symptoms that I keep hearing about. Hopefully it won’t be too bad. I’ll keep everyone posted on that.

    • Your Name

      How are you doing? I am looking into this diet pill. I am up to 172,,,thanks, Stacy

  • Loved the product.
    lisa sharpe (Verified Purchase)

    So far this is my second day takeing Bontril and it has yet to even help with keeping me from eating I dont have the shakey feeling, but I didnt have much of a appettite when I took that but with the bontril so far my appettite is not good I am eating soo much and I soo dont like that but ince this is my second day I am going to contitnue useing it and hopefully I feel the difference in my appetite if not I will be as big a a whale if this med doeesnt work

  • Wanted to know its availability
    Jennifer (Verified Purchase)

    The brand of Bontril is remarkable and I lost weight over a 3 month period that made me feel great. The only problem is pharmacies stopped carrying the brand Bontril and I gained the weight back over a 2 year period of time. Is the brand Bontril back on the market????? The positive effects of this medication were awesome and I was so healthy. Please let me know how I can obtain brand Bontril 105mg op daily. I know my physician will gladly prescribe it for me. I am a Nurse Practitioner and I highly recommend Bontril. I had a little insomnia initially, but it subsided. Thank you so much.

  • Loved the product.
    Brandy Y (Verified Purchase)

    I know for a fact this product works I started at weighing 228lbs and now my weight is 195 I’m so proud and never felt better. This was n a period of 4 months and still losing if I can do it so can you!!!

  • Maria

    I began Bontril SR 105mg in Nov. 2007 prescribed by my Endocronologist because of my PCOS which causes women trouble to lose weight. I’m 5’9″ and weighed 235lb. I took Bontril for 5 months and lost a total of 65lbs. Not only did I get rid of weight I got rid of High blood pressure and cholestoral. I’ve gained 5 to 10 lbs in the last 4yrs but the weight has stayed off. Fortunately with not much effort. I’m proof this medication does work and with pleasure I would show before and after pictures. FYI I had no side effects but alot of energy and was able to excersise which helped me lose my last ten lbs. I know of no one that has had my same results maybe it was just my luck.

    • baby

      can I get Bontril in a tablet form from you? :””(

      • bebe

        Can I get genuine Bontril caps or Melfiat tabs from you without an Rx?

    • Anonymous

      I have lost 43 lbs from november 27 2012 to feb 21 2013 (235-192)! I feel great. My mom has lost 70lbs. That was in 7 months. We have both been eatting low carb diets…around 20-30g a day. Little to no exercise, however we are both quite active. There is no magic pill. You have to work for it for it to work for you! Congrats on you weight loss.

  • Getting moody
    Kerri Harrison (Verified Purchase)

    I have been on bontril for a month and have lost the only thing is that is makes me kind of moody has anyone else notice this while taking this medicine Thanks for your help Kerri

  • Restless nights
    MekaG1973 (Verified Purchase)

    I have been takin Bontril 105 now for a total of 6 days and have lost 9lbs. The 1st few days I was a little light headed, but you have to remeber eat. I do also try to get in at least 30 min of exercise at least 3 times a week. I drink around 4 to 5 16.9oz of bottled water every day. The worse part I think is the restless nights I have had, but other than that, I say go for it.

    • Adrianne

      hi. my dr. says to take only one a day and take it by 11 am. I dont know what my weight loss is now but i weigh 217 02/09, goal 150 by 10/21.

    • 7432

      How do I get the bontril capsules 105
      Where can I order

  • Hypothyroidism

    I have hypothyroidism and am very over weight my endocrine doc recommended bonitril 105 sr..as i read on here its not good for you to take if you have a thyroid issue? any info on this please before i start them?

  • tried phentermine
    maria (Verified Purchase)

    Lost ten lbs in three weeks I was so happy…I have tried phentermine and had no success…

  • phenterdrazimine
    maria (Verified Purchase)

    I have been on the generic version phenterdrazimine(idk if I spelt it correct) and I was weighed in today from my Nutritionist and have lost 10lbs …I was more then happy and a little shocked. I have tried phentermine and lost close to nothing so I would recommend it to anyone who has tried other pills and were unsuccessful.

  • This products works for me.
    Bernita (Verified Purchase)

    I have been on the bontril for 3 weeks and have lost 10lbs so far. It has changed my eating drastically. My doctor perscribed it to me I get the generic phendimetrazine and I take the 105 and the 35 and It works.

  • Bontril was very effective
    Rhonda (Verified Purchase)

    This appetite suppressant is supposed to be taken 3 times a day, which eliminates the afternoon hungers. Bontril was very effective for me.