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5-HTP vs. Phentermine for Weight Loss

5-HTP

OTC
/ 79,167 posts

Phentermine

Rx
/ 57,229 posts
Other Names: Adipex P   Duromine   Fastin
Rating:
Based on 79,167 patient discussions on healthcare websites and blogs
Learn more
Rating: 3 out of 5
Based on 57,229 patient discussions on healthcare websites and blogs
Learn more
5-Hydroxytryptophan (5-HTP), also known as oxitriptan (International Nonproprietary Name), is a natural product amino acid and chemical compound precursor (chemistry) as well as metabolic intermediate in the biosynthesis of the neurotransmitt... Read more on Wikipedia
Phentermine, a contraction of "phenyl-Butyl number Nomenclatureamine", is an appetite suppressant of the phenethylamine class. It is an amphetamine like stimulant.It is approved as an appetite suppressant to help reduce weight in obese patients when use... Read more on Wikipedia
Concern level
Top 3 Concerns
Serotonin Syndrome
Did you have
this too?
Nausea
Drowsy
Concern level
Top 3 Concerns
Dry Mouth
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this too?
Palpitations
Irritability
See all concerns, alternative treatments and more
See all concerns, alternative treatments and more
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Help people by sharing experiences you've had with 5-HTP or Phentermine - your story could impact others.
Treato My Voice
By Isa
September 13, 2014
Isa wrote
5htp irregular heart beat and bad dreams
Comment on this post
By Dm3
August 30, 2014
Dm3 wrote
Intersting, but unstable.
Ginkgo biloba isn't an SSRI.
Jon  |  September 13, 2014
Comment on this post
By Joey
August 5, 2014
Joey wrote
5 HTP ( 30 days personal experience)
1264views
Comment on this post
By rnbventure
June 25, 2014
rnbventure wrote
Phentermine and chills
Danielle is right. You probably are taking too much. I had the same issue at first and then cut back on my dose and things got much better. Your body will get used to the medication. I have had weight loss success but I do have to be very conscious of what is going on in my body so that I can confer with my doctor about the changes. We've been able to play around with the dosage and are still working to find the write combination. Are you in touch with your doctor?
Cassaundra  |  August 8, 2014
I forgot to mention that belviq has been approved by the FDA. They even have free samples but you have to get the prescription from your doctor. Go to their website and check it out. Good luck on your weight loss journey.
Danielle  |  August 1, 2014
I've been taking phentermine since 2006 off and on. It works really well for weightloss. You might want to half your pill and work your way up to a whole pill. If this is a new medication for you it's probably just your body reaction to these new chemicals in your body. Try taking it on an empty stomach and eating about 20 minutes afterwards. Please let me know how it works out.
Danielle  |  August 1, 2014
Comment on this post
By Tony Botchagaloop
April 16, 2014
Tony Botchagaloop wrote
Phentermine and anemia
Comment on this post
By TJ.Jean
April 16, 2014
TJ.Jean wrote
Phentermine (discontinued after only 3 days)
1555views
Most likely in both cases here- you are having an allergic reaction. Did you contact your doctor about the severe side effects you were having? I've been on phentermine and what people have to be careful of is consuming alcohol with it, because it can lead to a very unpleasant blackout. I too suffer from anxiety and phentermine exacerbates those feelings because it stimulates the central nervous system. Everyone reacts to it differently and usually within 6-8 weeks a tolerance is developed and
July 26, 2014
Wow,the red face, severe hot flashes. I have them both, AND my liver enzymes went sky high. I have been taking it for months,,so now to slowly (they say not to stop abruptly) get off of phentermine. It seems like everything bad,points to this medicine.
sandra siguaw  |  June 29, 2014
Comment on this post
By Joe
February 27, 2014
Joe wrote
5 HTP side effects
2765views
I am taking Celexa an SSRI and wanted to taper off so I went from 20mg to now 10mg which sucks for my mood and headaches. I took one pill of the 5HTP to offset my deminished Celexa and waited 15 minutes and ate some ice cream ~ I immediately felt numb, cold sweats, clammy and vomited all of my ice cream, bummer, I'm scared to try another 5HTP pill :(
Jenn  |  August 17, 2014
Comment on this post
By Kaleigh 25 Yr. Old Female in Baltimore, MD
February 5, 2014
Kaleigh 25 Yr. Old Female in Baltimore, MD wrote
Taking Tramadol & Phentermine Together
3516views
The MD knew withdrawals are going to be expected. I was given chlonodine and phentermine to help. It worked will and now I am off meds. All this tx was supported by studies. A general MD will not have the knowledge to feel comfortable.
Rudy  |  May 31, 2014
Try to find a MD who is a pain management specialist along with being an addiction specialist or addictionologist. These doctors are much more knowledgeable on pain management along with other treatment that will help support your pain management. For example, my pain management MD had me on a pain med from a chronic injury. He also discovered I needed testosterone. After a year of treatment my chronic pain was feeling so much better that we decided to try to stop the pain meds. The MD kne
Rudy  |  May 31, 2014
It works like a miracle pill for me...almost at my weight lose goal...
cynthia  |  May 20, 2014
It made me hungrier too..dr took me off it cause I would gain and lose..looking in to something diff.
I' m bernita  |  April 30, 2014
does the phentermine work for you? seems to make me hungrier
jennifer  |  April 8, 2014
So how did your doctors appt go?
Chavez  |  March 12, 2014
Comment on this post
By Sharon
January 15, 2014
Sharon wrote
5HTP and muscle pain and joint pain
1774views
I took 50mg thought I was going to die. It made me so depressed.I hope the depression will go away soon.It has been 2 days now.If it don't go away I am going to the hospital.
margie  |  May 5, 2014
Comment on this post
By Logan Eros
January 7, 2014
Logan Eros wrote
No safe level of 5-htp. . .one last thought
2716views
Comment on this post
By Logan Eros
January 5, 2014
Logan Eros wrote
No safe level of 5htp contd.
2076views
There are many things wrong with this post.

Serotonin syndrome is not caused by an impurity in a supplement. Serotonin syndrome describes a rare state wherein the body makes too much serotonin or doesn't clear it properly, usually because two or more medications affecting serotonin levels have been mixed. This usually involves large doses of something like a cold medicine being taken on top of an antidepressant or recreational abuse of a substance that affects serotonin levels. (Robitussin, f
August 26, 2014
what brand were you using? did you ever look up literature to see if they conducted an assay on your particular brand? 5HTP is a naturally occuring chemical in your body and generally those who are depressed have a deficency. I think you are correct about it being synthetic but it sounds like they were selling something other than advertised. Lastly, eosinophils are a natural type of white blood cell in every human. they can be involved in serious blood disorders but those with eosinophils so
January 27, 2014
Comment on this post
By Logan Eros
January 3, 2014
Logan Eros wrote
No safe level of 5htp
1659views
Definite symptoms of serotonin syndrome, perhaps your body already had a balances serotonin level prior to taking 5htp
J.White  |  August 1, 2014
Comment on this post
By zorine grimstead
January 3, 2014
zorine grimstead wrote
PHENTERMINE
1144views
Comment on this post
By Bre
December 10, 2013
Bre wrote
Phentermine experience
1932views
You may feel like to begin with, but watch what you eat. I am not craving squash and zucchini with chicken. I lost 20 pounds in just over 2 months taking phentermine and all I did was change what I ate. No diet, just changed eating habits. Drinks lots and lots of water, it helps tremendously!! Good luck!!
Melody  |  June 26, 2014
I just started phentermine but find myself hungrier on it then before I started taking it
April 8, 2014
Comment on this post
By Kjartan
November 12, 2013
Kjartan wrote
5-HTP for sleep
1601views
Comment on this post
By Codierachel
September 30, 2013
Codierachel wrote
Phentermine & missed period
I started phentermine almost 2 months ago... I had a baby in march, and I am pretty sure my tubes were tied, but I am now 13-18 days late for my period. I know the chances of getting prego are slim when your tubes get tied but I am having all the symptoms and a freaked out to take a test.
August 11, 2014
You think?
uh  |  April 19, 2014
Comment on this post
By CookieZ
September 2, 2013
CookieZ wrote
5 HTP
1268views
Comment on this post
By Eleanoro
August 27, 2013
Eleanoro wrote
5HTP made me mean
1817views
I've been taking 5-HTP for chronic anxiety disorder (CAD) and depression for about 3 years now
and have never experienced what all the above have. You start out slowing taking 5-HTP, as
indicated on the bottle, and I never exceeded 3 per day. I'm now down to only one per day,
stated on the bottle, and I never took it before bedtime. I don't have anxiety or depression while I'm sleeping, so why would I need to. My doctor paired it with Gaba Calm, so ask your health
care professional if he/
Kay  |  June 21, 2014
I heard that it could cause aggression and road rage type symptoms. I have not experienced this though, and I've been taking it for about 4 weeks. I've actually had more restful sleep since starting it and seem a little more relaxed.
5HTP for Depression  |  June 18, 2014
so that explains my aggressivity..also I had nightmares
Judy  |  February 18, 2014
Comment on this post
By taneisa
August 16, 2013
taneisa wrote
fever blister from phentermine 30mg
This isn't from phentermine specifically - but if you are prone to cold sores, stress can bring them on. And, if you were having anxious feelings, this could feel stressful. I get them, but haven't noticed any "sudden" eruptions or change in the occurrence since being on phentermine.
Michelle  |  July 21, 2014
That isn't from the phentermine. Dr. Meletio
June 7, 2014
Comment on this post

What patients are saying about 5-HTP vs. Phentermine

270 patient discussions from healthcare websites and blogs
after a while, the 5-HTP made me nauseated (I had a friend,...
I tried 5-HTP w/ Phentermine and it wasn't anything at all like phen/fen. And after a while, the 5-HTP made me nauseated (I had a friend,...
med I got a great synergistic effect with 5htp. It further...
...not a med I got a great synergistic effect with 5htp. It further reduced my ...noon each day. When taking phentermine at 9:00 am. Keep up with the phentermine it worked wonders for me an...
med I got a great synergistic effect with 5htp. It further...
...not a med I got a great synergistic effect with 5htp. It further reduced my ...noon each day. When taking phentermine at 9:00 am. Keep up with the phentermine it worked wonders for me an...
dollars for 150, 100 milligram pills. I've found this works...
...To Buy 5HTP Online? I typically buy the Natrol brand at costco which is 19 dollars for 150, 100 milligram pills. I've found this works really great when used with phentermine. It contributes...
effects? I want the 5htp to work for me because it is...
...try again only once a day. Do you take phentermine too? Did it help \"restore\" the appetite suppressant effects? I want the 5htp to work for me because it is also supposed to help...
5htp a day). Less than 200 mg a day does not work in my...
redds822, I think the 5HTP works. When I was taking phentermine, it definitely helped prolong its effect (when taking 200mg 5htp a day). Less than 200 mg a day does not work in my own experience....
and the 5-HTP was recommended to me as an effective tool to...
  I take Phentermine and Adderall everyday and the 5-HTP was recommended to me as an effective tool to \"come down\"...
from my bottle: \"5-HTP works naturally by increasing...
...from my bottle: \"5-HTP works naturally by increasing ...Since I started taking Phentermine a few days ago I've been super emotional and was looking for some relief. My doctor recommended...
then I'll be going up to 40 mg. I have no side effects...
...diet. I'm on 5HTP and only 20 mg of Phentermine until my follow up appointment this Wednesday, then I'll be going up to 40 mg. I have no side effects so ...I semi sort of have is dry mouth,...
I take one 5-htp 100 mg at night before I go to bed. I was...
I take one 5-htp 100 mg at night before ...take it in the evening. It actually helps me sleep better while taking phenterm...
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