Phentermine Side Effects
Phentermine Side Effects List:
Common Side Effects
1. Bad taste in mouth or dry mouth
2. Headache
3. Diarrhea
4. Upset stomach or pain in the stomach
5. Dizziness
5. Nervousness
6. Insomnia (troubles with falling or staying asleep)
7. Euphoria (unusual happy feelings)
8. Confusion
9. Irritability
10. Clumsiness
11. Heartburn
12. Vomiting, nausea
13. Increased thirst
14. Difficulty urinating (constipation)
Less Common Side Effects
1. Fever
2. Hallucinations
3. Panic
4. Restlessness
5. Stomach cramps
6. Tremors
7. Constipation
8. Weakness
9. Shaking
10. Depression or periods of mania
11. Overactive reflexes
12. Severe nausea
13. Aggressive behavior
14. Impotence or low libido
15. Gastrointestinal disturbances
16. Psychosis
Severe allergic reactions
1. Rash
2. Hives
3. Itching
4. Face (or its parts) swelling
5. Tightness in the chest (difficulty swallowing)
6. Wheezing
7. Skin redness
Rare and the most dangerous side effects
1. Blue skin or lips
2. Ankle or feet swelling
3. Fatigue
4. Chest pain
5. Problems with breathing
6. A rapid heart rate or palpitations
7. A desire to take Phentermine more often (or at higher doses)
8. Unusual thoughts
9. Very high blood pressure or low blood pressure
10. Pulmonary hypertension (can cause death)
11. Cardiac valvular disease
12. Slurred speech
13. Seizure
14. Fainting
In order to understand why Phentermine can cause such various side effects, we need to understand how this medicine works…
How All the Side Effects Are Combined?
Phentermine is a catalyst for production of stress hormones – Dopamine and Noradrenaline.
These hormones give a stunning effect of the suppression of appetite – the main purpose why we use Phentermine.
But do not forget that the effect of “Suppressing Appetite” – comes from a more global and the scale effect in our body – “Fight or Flight” – this is how our body reacts to the world’s dangers, including violation and damage to an environment.
This reaction activates human strength to survive, struggle and escape.
How Does It Manifest?
It’s simple. Reacting to dangers, all human senses are sharpened allowing us seeing even in the dark, making us more sensitive and giving us more energy. We are able to work faster because our body gets more air and this oxygen is carried from the air to our muscles.
We experience reduced blood flow to our skin, kidneys and digestive system which helps to avoid blood loss because of injuries, increase sweat and reduce saliva production. We are becoming less sensitive to pain, because we get more endorphins (hormones that naturally kill pain).
Besides this, human arteries are narrowed and veins are extended. This allows the blood returning to our heart.
And, of course, fight-or-flight reaction helps to reduce appetite and lose weight, as a result.
These side effects can bother you if you take the wrong dosage of Phentermine; get the wrong treatment or diagnosis.
This weight loss drug interferes with the brain’s work that regulates body’s organs such as blood and heart, skin, hair, teeth, stomach, etc. Thus if it messes up with your brain, it brings changes to all these organs as well.
Everybody who is taking Phentermine experiences its side effects. But their impact on every person is different because it depends on general health, age, dosage, terms of the treatment, etc. It is believed that Phentermine 15 mg causes the least side effects, 30 mg brings average damage and 37.5 mg can lead to the most serious changes.
Phentermine should NOT be taken if you have any of the following conditions:
• Heart disease
• High blood pressure
• Glaucoma
• Thyroid problems
• Anxiety disorder
• Diabetes
• Epilepsy or any other seizure disorder.
• Do not take Phentermine if you are taking monoamine oxidase inhibitors (MAOI) to treat depression.
• Also, if you are pregnant or nursing, talk to your doctor about the potential risks involved with taking Phentermine.
1. Date of birth
2. Gender
3. Do You Smoke?
4. Weight
5. Height
6. Do you have high blood pressure?
7. Are you currently pregnant?
8. Have you ever been treated for heart problems or heart rhythm problems?
9. Do you take any form of pain killers?
10. Do you have any of the following conditions?
Leukemia, Multiple Myeloma, Sickle Cell Disease, Peptic Ulcers, or Retinitis Pigmentosa?
11. List all current medications, including non-prescription medicines.
12. List all allergies including medications.
13. List all medical conditions for which you are currently being treated
14. Is there anything else in your medical history you deem relevant?
15. Declaration: I have answered the above questions truthfully and to the best of my knowledge.
Phentermine and Nervous System
Let’s see how Phentermine can mess up with your nervous system that consists of Sympathetic and Parasympathetic systems.
The Sympathetic system has many responsibilities, such as human survival, food production and general activity of the body. And this system is activated by Phentermine.
Parasympathetic system is opposite to the Sympathetic. It is responsible for digestion, relaxation and sleep.
While Phentermine activates Sympathetic nervous system and mobilizes its strengths, it doesn’t pay attention at what is really important for the body at this particular moment.
This weight loss medicine also affects Beta-1 adrenergic receptors in the smooth muscle causing the uncontrolled release of noradrenaline. This can also lead to unpleasant side effects.
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Hello all I am thinking of going back to the doctor and taking phentermine again. the thing is I have to make myself eat because it really does take away your appitiete. My best friends wedding is in July and my class reunion in in August. I have always been small and now i and over 50% body fat.. I am 28 5’9 and weight 210 I would love to be back down to 165 Oh well i have allot to pray on and hope it works for me and dont kill me!
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My Doctor prescribed Phentermine.I was about 55 pds overweight.The Phertermine worked.It was amazing.I lost 55 pds in less than 8 months.But it came with a serious cost.Once I stopped taking Phentermine I went through a terrible withdrawl.Depression,no energy,tired alot.My gums receded so badly I might have to have partials put in.And appetite returns..and do does the weight. In short Phentermine does what it says.But also bear in mind that it does have side effects.some are very serious.Im considering a Lawsuit against the Pharmacuetical giants who produce Phentermine.Things you should know is that NO ONE should take Phentermine longer than 90 days.It is addictive.It does have side effects that are underplayed.Doctors don’t reveal this truth.I did gain about 15 pds back.Slowly getting my life and health (and teeth) back.Use this drug with extreme caution.There is a reason it’s a Class A Narcotic.
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I am on day 3. I am 8lbs down, but having a few side.effect… I am great all day, around 6 or so every day I get a horrible headache unbearable. Has anyone else had this??
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luvisfaith Reply:
March 24th, 2012 at 2:58 pm
I am on my 3rd month taking 37.5 mg. The side effects for me are mild, I do have dryness in my mouth that only water can help (which is a good thing) keeps me away from soda. In the beginning I did get headaches that were sharp then it seemed like cluster headaches but that went away. I eat weightwatcher meals and a normal dinner small portions since I do get full fast (shrinking of the stomach). I will only be on it another 3 months as the DR. doesnt want me to be on it any longer then that. I am down 22 pounds. Exercise helps of coarse. The side effect of not being able to fall asleep is a factor but I take a melatonin at night and that helps somewhat. Good Luck to you. Hope you do well.
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wondermom Reply:
March 29th, 2012 at 11:39 pm
i take 1/2 a tablet in the morning and then a 1/2 in the afternoon and havent had any headaches since.
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WOW!! This blog site is FULL of either FDA shills or complete morons! The Phentermine of today is LIGHT WEIGHT compared to the Phentermine of the 1990-s and you people talk about it like it’s METH or CRACK. What a joke. This stuff (the 37.5) is very mild and not even as strong as the old Metabolife 356 and Zenalene RFA ephedra pills that were OTC. Go ahead and keep running your stupid mouths and the FDA goons will cause todays WEAK Phentermine to go out of production in the name of “health” (like they REALLY care, with all the other prescription drugs that KILL over 200,000 Americans per year and all the toxic CRAP they put in our food and water)! but I digress As I was saying, go ahead and keep complaining about all the “horrible” symptoms of Phentermine and we will be left with NOTHING to control our appetites from a food supply that is loaded with HIGHLY ADDICTIVE MSG, ASPARTAME and HIGH FRUCTOSE CORN SYRUP which cannot be processed by the human body and is stored as FAT and causes CANCER AND DIABETES! Fat and sick people keep the American Diabetes Assocation and Cancer Associations RICH, who in turn BRIBE THE FDA. Wake up IDIOTS. Even if this weak Phentermine gives you side effects, keep your mouth shut or we will be left with NOTHING but toxic, fattening, addictive food and OTC diet supplements that are totally worthless except for decreasing your bank accounts. Good grief at the STUPIDITY OF ALL THESE SHEEPLE!!!!!!!I guess you like being totally controlled by a tyrannical government. Fat, sickly sheep are easier to catch and slaughter.
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ann cox Reply:
March 23rd, 2012 at 9:23 pm
You couldn’t have said it any better!! Tylonal is way more deadly than this and its in everything otc …people really should educate them selves ..
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Flynn006 Reply:
March 28th, 2012 at 6:24 am
You are nuts.
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Does anyone know if the phentermine capsules work better than the white blue speckled pill?
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I’ve been taking this for 4 days… I have had a weird dream every night so far but nothing scarrry .. my biggest problem is I’m grinding my teeth! I don’t see it as a side affect anywhere does this happen to any one else??? My damn jaw hurts from it! However my friend lost almost 100 pounds so I would like to try it for 3 months… but I don’t know if my teeth can take any more of this!
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lisa Reply:
February 21st, 2012 at 7:25 pm
yes ive been taking these for a while and i also grind my teeth or just catch myself bit down on them all day. and yes my jaw was sore also .
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Janet Reply:
February 22nd, 2012 at 12:43 am
Kara, the grinding can happen. Be careful or you’ll develop tmj. If you don’t already you should sleep on your back. Until the pain in your jaw subsides, don’t chew gum, chew ice, popcorn, and anything hard like nuts. I did that and ignored the pain and ended up having to have a mouth guard and put on relafin
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Karen Reply:
March 1st, 2012 at 12:25 am
Hi Kay, go to your dentist as ask about a mouth guard…..should be covered by insurance.
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Monica Reply:
March 30th, 2012 at 6:13 pm
I have a mouth guard because I grind my teeth. My mom said I’ve been doing that all my life. But I’ve just now started Phentermine. I get the capsules at 30mg. It’s been 11 days, and I’m down 9 lbs. (Started at 248, now I’m 239; I’m 5’6″ and 33 yrs old.) I canceled my gym membership because I’d been going for 3 years and have fluctuated in my weight (and eating habits) after my father passed away in 2010.
My only side effect is dry mouth, but I drink water and try to keep a container with me where ever I go. =)
I plan to stay on it for 3 months and see where I end up. I’ll probably take a month off and start right back up on it! My friend lost 20 lbs, but shes smaller, and doesn’t exercise or eat right (just once a day). She’s been on it for about 8 months. And now, she takes a pill every 3-4 days. Im def not going that route. =/
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I started taking Phentermine 37.5mg 6 months ago when I went to my doctor and told him I was tired of being fat. I have lost a total of 52 pounds so far and I feel amazing. I am monitored regularly by my doctor and so far other than being a bit moody at times (normally it is because my husband has done something to irritate me) and not being able to fall asleep right away (so I take Melatonin) I haven’t had any major side affects. My husband started taking the same dose about 4 months ago and is down just over 30 lbs.
The most important thing to remember is that the medication is just a band aid, the only way the weight is going to stay off is by changing your lifestyle. We don’t eat fast food anymore, I don’t fry anything, and we eat mostly white meat and fish, if we eat meat at all. We did go meat free for 3 months to wash out our system and that was great! I also exercise 3-5 days a week, depending on how I feel, and I change up my exercise with each work out, I go from jogging, to core strengthening, to boot camp style, and yoga. It keeps my body guessing so it doesn’t get “used” to one type of workout.
I am planning to wean off of the pills in the next month or so, but I know that without continuing the eating habits and exercise my weight will come right back on.
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I stareted taking this medicatation before Christmas 37.5 mgs. Wow this stuff is a BiG TIME DRUG!!!!!!!! Don’t have any caffine at all!!!!! Caffine increases this hyperness big time!!!!!!!!!!!! I went on this stuff because I was having ahard time loosing weight after a histrectomy. I had no appetite and was dizzie weak, sweating, (like I needed night sweats !) I got to the point of throwing up and constipated Big time rabbit nuggets. Feeling like I would black out not good. Neck ache, kidneys burn and not pee much and thats why I’m on here to check side affects . Had I known all these side affects were not just affecting me or that they were this bad I would have never started this stuff. My Daughter started a regular whole grains and fruits veggies and NO RED MEAT way of eating also NO SUGAR and different natural teas NO CAFFINE no hormone increased milk or eggs she has vanilla rice milk or soy also comes in chocolate and real chocolate she sweetens her stuff with some honey plus mollass which increases energy and helps burn fat (2tsp 1x per )shes lost as much weight as I have on the Phen with NO side affects. Plus my hair is falling out big time this is not everything Nightmares w/ the realness to them and depression anger. I say ask yourself is It really worth it ? Please people please try my Daughters way of loosing weight it really works and is safe plus you can eat a lot of these good foods and still loose. God bless you take heed and avoid the painful pitfalls of weight loss.
p.s.
Remember weight loss is Big $$$$$ industry.
Can we trust a drug company to keep us safe and thin or thin fat thin and all sorts other medical problems where they make money off us desperate unsuspecting dieters.
Maggie
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acuDoc Reply:
March 5th, 2012 at 7:54 am
I highly recommend seeing an acupuncturist for weight loss. Not necessarily for the acupuncture, but for the prescription herbal formulas and mostly for the food therapy.If you are on this med, then it’s doubly important because it is so hard on your organs. When you get the stage where your hair falls out (many of you will) then it’s time to see that acupuncturist to be prescribed herbs to support your body, organs and mood and protect against the harmful side effects.
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rhonda Reply:
March 22nd, 2012 at 3:23 pm
I have the same problems hair falling out,feet swelling,Not taking it any more to many side effects,I lost 8lbs,not worth all the side effects
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I’ve been taking phentermine for approximately 6 months. My doctor sees me once a month to monitor my health, side effects, and weight loss. When I first began taking the low dose pills I had trouble sleeping, dizziness, and was sweating a lot. Those side effects went away. Then my skin became terribly itchy. That finally went away. As my dosage was upped new side effects manifested and were intolerable–severe dry mouth to the point I was choking on foods and coughing, biting the insides of my cheeks and my lips and the tip of my tongue until they bled and were covered in sores, and vivid intense nightmares. I ended up refusing to take any more pills until my next appointment with my doctor two weeks later. Once the medicine left my system I felt so much better. All of the side effects vanished. My doctor has placed me on a lower dosage, and even said it would be okay to skip every 3rd day if I begin to have problems again. I now take a pill once each day for two days, then go without on the 3rd day because my body just doesn’t like having phentermine in it. The good news is I’ve lost 30 lbs. and only have 20 more to go. Also, I’ve taught myself to eat healthier and actually crave vegetables and fruits instead of donuts and fast food. Hopefully this is my road to a permanent healthy lifestyle. For those of you reading this, if the symptoms are unbearable talk to your doctor about lowering your dosage and even skipping days. Hope this helps. Good luck on your weight loss.
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TAKE BIOTIN SUPPLEMENT FOR HAIR LOSS , AND TO EVERYONE IF YOU TAKE PHENTERMINE WHICH I DO AND YES THE SIDE EFFECTS ARE HARSH ..YOU MUST MUST FILL YOUR BODY WITH VITAMINS …THERE IS SO MANY NATURAL THINGS THAT WILL GIVE U ENERGY AND MAKE U NOT HUNGRY. PLEASE RESEARCH ACAI.. I DRINK PURE ( NOT ACAI FRUIT JUICE ) BUT PURE ACAI JUICE, YOU CAN FIND IT AT COSTCO. IN THE AM I DRINK IT. IT GIVES ME MORE ENERGY THEN COFFEE AND IT MAKES ME NOT HUNGRY .. I TAKE HUGH DOSES OF SPIRULINA ALSO CHLORYPHIL, APPLES I EAT ALL DAY ( IT GETS RID OF CELLULITE ) ANOTHER ENERGY FOOD.. I CANT TELL U HOW GREAT I FEEL. BIOTIN FOR HAIR !!!! B12, WOMENS MULTI VITAMIN. ALWAYS GEL CAPS.. AND TONS OF WATER… U MUST FLOOD YOUR BODY WITH NUTRIENTS AND VITAMINS. PLEASE RESEARCH ACAI.NOT ONLY HAVE I LOST WEIGHT DOING THIS , MY SKIN GLOWS, MY MIND IS CLEAR,AND I AMNOTTTTTTTT HUNGRY ALL DAY. I MAKE ACAI SMOOTHIES. WITH ACAI JUICE FROM COSTCO. PURE KIND. FROZEN FRUIT AGAIN GET A BAG OF BERRIES FROM UR GROCERY STORE. I DRINK LIKE 3 OF THEM A DAY AND I AM AMAZED.. I AM 5’7 AND I NOW WEIGH 124//AND THATS FOR ME IS SKINNNNYYY.. ALSO IF U DONT DRINK WATER DO U REALIZE UR BRAIN SENDS SIGNALS TO U AND U THINK UR HUNGRY SO DRIN K WATERRRRRRR A LOT … PLEASE.
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carmina Reply:
March 30th, 2012 at 4:25 am
I cant say thank you enough for all you good tips you seem to know a lot, can you recommend anything for my eyesight that’s one of the worst side effect I’ve had, thanks again..
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This is the third time I have taken this medicine. The first two timeswith few side effects. This time I am getting sores in my mouth and tongue. Anyone else have this problem?
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Jenn Reply:
February 6th, 2012 at 9:47 pm
Yeah, maybe the dry mouth is causing it. Try Biotene. It’s a mouthwash and toothpaste that helps with dry mouth. Also, chew sugarless gum and drink plenty of water.
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When I first started taking phentermine 37.5 I was gasping for air alot. I didnt think anything of it til now when I read that that is a serious side effect. Im no longer having any trouble breathing and have been on the medication for going on 3 weeks. Idk if ive lost any weight b/c i havent been on a scale yet. I go next week. The main problem im having now is like stiffness in my neck and my eyes FEEl funny.. I can see fine.
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Yea I gaiined all my weiight bakk n a biit more. I started out at 290 n lost liike 20 lbs iin da 1st month was exerciisiing 2 hrs a day n on striict diiet. No sugars,salts,carbs man iit was STRICT iit as all good then but ii started to plateau ii waznt loosin anymore n ii started to feel depressed.ii notiiced ii was haviin problems wiith stayiin concentrated. My braiin felf soo tiired n sometiimes id cry because ii had these feeliings liike ii wz loosiin my memory ii felt liike no one understood me iid be driiviin n my mii.d would just go blank.. n id feel liike ii wz iin my own liittle world. If ii could go bKk n never take PHENTERMINE agaiin ii would because of iit ii am no lnger myself.some ppl say the memory loss iisnt permanent but for me iit has been. Almost 3-4 yrz ji haven’t taken the piill n ii feel terriible ii want to check out my memory problem but don’t kno where to go or even where to start anyone wiith thiis problem pls help!!!!!! Email mii at Luvizmb69@ yahoo.com. Thankz
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Tbone Reply:
March 15th, 2012 at 5:02 pm
I think you need to fix your “i” key on your keyboard.
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jim frost Reply:
March 22nd, 2012 at 8:39 am
good call
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Beth Reply:
March 23rd, 2012 at 3:01 am
Haha!
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