Overall Rating 
Product Claims
Xenadrine the #1 diet supplement is now Ephedra Free! It was only four years ago that Cytodyne Technologies first made history with the introduction of the original Xenadrine RFA-1. Never before had a diet supplement produced such amazing clinically proven results. Millions of people lost the fat, transformed their physiques, and along the way, helped make Xenadrine the #1 diet supplement in America. And yet, the researchers at Cytodyne continued to push the envelope in search of an even greater thermogenic breakthrough. Mission accomplished! Introducing new Xenadrine-EFX, the next generation in advanced thermogenic technology. This amazing, patent-pending formula produces an entirely new level of effectiveness never before seen in the diet supplement industry. In fact, it is the first product ever to be powered by an ultra-potent blend of natural, clinically proven metabolic compounds that work synergistically to produce unprecedented fat-burning results—without containing ephedrine! New Xenadrine-EFX ultimately provides the most effective approach to losing weight ever developed! That may sound like a bold statement, but remember, this innovative formula was created by the same researchers that brought you the original Xenadrine. And like its predecessor, Xenadrine-EFX is the culmination of years of intense investigation into the sciences of nutrition, thermogenesis and metabolic activation. The end result is a true thermogenic breakthrough that is unequaled in its ability to increase metabolism and promote the fastest possible fat-loss, muscle-sparing results. In one major university study, the increase in metabolic activity and caloric expenditure produced by Xenadrine-EFX was so extraordinary that even the researchers were shocked. In further case studies, participants lost up to 20 pounds of fat in only 14 days time! These stunning results were up until now, completely unheard of! Scientists believe that Xenadrine-EFX is so much more effective at promoting rapid fat loss because it directly targets a multitude of key metabolic pathways, simultaneously! This is a scientific first! And on the way, this one-of-a-kind supplement also greatly enhances mental focus and acuity, increases energy, suppresses appetite and provides valuable antioxidant activity, all at the same time.
Comparisons
Xenadrine 40+ | Xenadrine NRG
6 Jul 2008 - Cesar of - -, Mexico writes:
I used once the predecessor of Xenadrine EFX and I lost 13 kilos but im not sure if i should attribute it to the pills since i did cardio for 20 mins. and then hit the weights 5 days a week. Right now i regained those 13 kilos since i have been eating a lot of junk food and no exercise. Right now im trying to lose the weight again and im doing 70 mins of cardio 5 days a week and i sporadically play squash for about an hour after the cardio. Im taking now xenadrine EFX because even though i have been working my ass off and i know i will lose the weight, i remember that xenadrine DOES speed up the process.
16 Apr 2008 - Sim of Weat Indies, Jamaica writes:
I have been using Xenadrine in its various forms on and off for about 8 years!! EFX works for me just as well as the RFA did. Curbs apetite, increases endurance in cardio. However I can only manage 2 pills per day. One in the AM before my workout and 1 before lunch, or the latest 2:00pm or else I cant sleep. I actually like the jittery feeling, keeps me alert and focussed at work ..lol. I usually take for about 2 months and stop for a month while Im trying to lose weight so that my body doesnt get to used to it or to dependent. When Im cycling off I reduce to 1 pill per day then gradually cut it our or else I get withdrawal symptoms if I stop using cold turkey- usually extreme fatigue and low mood. For me its a great diet aid
27 Mar 2008 - Anne of Virginia, USA writes:
I only used this product for a week and I had to stop taking it. I felt jittery and antsy the whole time I was taking it. Yes, I did lose a few pounds but it was because I had NO desire to eat. I would go a day barely eating anything and when I would eat, I would feel a little sick. The last day that I took it, I felt my heart racing and started sweating. Bottom line, it works but not in a healthy way. I will never take this or another diet pill again. I'm sticking to good old fashion healthy eating and exercise.
14 Mar 2008 - HEATHER of New York, USA writes:
I have been taking this product for 3 days now. I started off 1 pill in the am for 2 days. I am not even taking the full dosage and I feel shaky. Today was the time day I took 1 in the am and another like 4 hours later. I also feel a tightness in my chest and become dizzy. I do have less of an app and I can't sleep! Last night I couldn't fall asleep and was up until 130 am! Does anyone else have these symtoms??
6 Feb 2008 - joni of Texas, USA writes:
product not like it was before that's for sure too much caffine after taking it for a month and than stopping I had the worse headache 2 DAYS!!! I had to go to the hospital I would never take this product again
24 Sep 2007 - Keri of Missouri, USA writes:
I have use XenadrineEFX for four months and I have loss sixty-two pounds. I only have 100% fruit juices and water for breakfast and I take two pills and a one multivitamin. Come lunch I have a small salad and fruit, water if I'm hungry. I'm usually not even a little hungry!! I go the gym hour or hour and half each night. Around six I have a small dinner and I take two more pills. XenadrineEFX has help me so much! I dont drink sodas or eat junk food no more! I just don't want it. I take the money that I would have spent on "sodas and junk food" and go and buy me some new clothes!!! wooohhhooooo!!You have to really want to loss weight and you have to work at really hard! If I can do it and still doing it anybody can!! Thank you Xenadrine EFX !!
28 Jun 2007 - Katie of Pennsylvania, USA writes:
Profile: 22yr old Female, Starting Weight: 151 lbs, Height: 5'9", Date started Xenadrine EFX: April 2007, Today's Date: 28 June 2007, Desired Weightloss: 16 or more lbs, Weight Loss to Date: 4 1/2 lbs over 3 months. I am happy, because I definitely notice weight loss in my face, chest (unfortunately), arms, and tummy. Hips, thighs, butt have little change, but there is some. Legs are toning upp nicely. I guess I haven't lost weight because I've built muscle (20 min strength train & 30 min cardio 4-5 times a week, restricted calorie diet). I'd probably have better results if I stopped eating cheese and ice cream, but it's just too hard, haha. Could probably achieve same results without Xenadrine EFX, but I like the evergy it gives me, compared to the anxious energy other supps give, this is a calm steady natural kind of boost, I like it. And it boosts my mood I think, too. I'll keep taking it...
5 May 2007 - Lohit of Dubai, United Arab Emirates writes:
Profile : 154 Pounds - 5.9" Height - 5/6 Times Workout+Cardio Dosage : 2 caps before Breakfast 7.am - 2 caps in afternoon 2.pm Side Effects : Cannot consume anymore nicotine Positive Effects : Boost in alertness (can feel while driving) Can survive with less sleep More Energetic Quit Smoking as i feel uneasy when consumed with Xenadrine Weight Loss : Started on 1 May 2007 With Weight 156.2 Pounds. 4 May 2007 with Weight 154 Pounds. Significant difference in toning. more Energy For Workout
2 May 2007 - Angel of Pennsylvania, USA writes:
hi my name is angel i tryed this product 4 yrs ago after i had my first son and i lost 40 pounds in 5 months then i ran out then my life changed then last yr i had another son and i tryed for a yr to lose weight and i couldnt so i figured since i took it before and it worked i would try it again and now i took it yesterday may 2 07 i didnt have no soda or junk food i knw this sounds weird but i had so much enegry at work i watch what i ate and i loved the way i was feeling i had no problem with this product so far in the past so i am gonna keep up with it again
1 Dec 2006 - Jonathan of Florida, USA writes:
I'm 25 yr old male. I've lost 14 pounds in 7 weeks. Starting weight 226, now 212. I have been eating right (some weekend indulges) and gym mon-friday doing weights and cardio. I attribute this partially to Xenadrine, but I don't understand all these people that lose 20 lbs in 10 days and not changing activity. You have to still work hard! I enjoy it though, I've transformed my lifestyle and extremly happy with everything. I consider it a "jump start". I'm just baffled of some reviews that I read that say they didn't do anything different and eat and just "move around" more and its a miracle. I honestly think Xendarine pays some people to go around to a bunch of people to write all "uncommon results". None the less, Xenadrine has worked for me.
30 Oct 2006 - John of Ohio, USA writes:
I don’t know why some say Xenadrine EFX don’t work. Unfortunately, they are doing something wrong. Let me be the first to say within 2 weeks, I’ve lost 20lbs and feel great. I’m a big guy weighing 280, now I’m down to 260lbs. I did not go to the gym or do any exercise, but did do a lot of moving and walking on my job which helps me to lose weigh. If you really want to lose weigh, try this. 1) Take 2 Xenadrine EFX pills and don’t eat anything in the morning just drink a lot of juice or water. Trust me you will have energy. 2) Take 2 Xenadrine EFX pill in the afternoon like around 4 or 5pm. 3) Wait at least an hour before you eat a meat. 3) Do not eat a lot of fatty meal, just a small meal. Drink a lot of juice or water. 4) Take a multivitamin before going to bed.
22 May 2006 - Jamie of New York, USA writes:
ok so its been about 2 1/2 weeks i think since taking this product. i have not noticed any weight loss as far as the scale goes but visually it seems as i have toned up a small amount. enough for me to notice a change is taking place. im guessing being there is no weight loss, it is toning and turning into muscle. im not sure if the EFX has a role in assisting this or not, the only real excersize i get is aikido classes 3/4 times a week. i still feel some of the pick me up but its not as jittery at this point but also not as speedy..i take a dose at 6am and about 11:30/12 pm and i have no probs falling asleep at night. i may switch over to something else but im still not sure.
3 May 2006 - Jamie of New York, USA writes:
TAKING:full dosage-4/5 days. WEIGHT LOST:no scale but from looking at myself in the mirror it seems i have lost some weight (fat) in my chest. first time i am taking a supplement.i def notice a increase in energy/mood ..no problems sleeping.. if you drink alot of coffee you may not notice the pick me up. i've noticed a slight decrease in my appetite. some people state that it has made them gain weight?? are they are eating more because there appetite is going up.? if the xenadrine is speeding up your metabolism your food is digesting faster, which gives you that hungry feeling.just because you feel hungry doesent mean you NEED to eat.use some self control. - - mild jitters within 1 to 2 hours after i take it - - im going to finish the bottle..if it did well ill get another bottle. if not, then i may pick up a bottle of stacker or something.
13 Apr 2006 - Danielle of Texas, USA writes:
It worked for about 2 weeks (I lost 10lbs), but after that it seemed to lose its effectiveness. I didnt have as much energy as I first did.
Hector of Texas, USA writes:
Have just started the supplement, so this will be a "journey" journal. Will continue to follow up. EFX made me hungrier, but also gave me more energy. It makes me feel more awake than taking a cup of coffee, which is what they compared the stimulant action to. The stuff isn't bad at this point, but if you are a person that has a problem with horse pills, think about this one! I was at 215, (I am a 5'7" male), and in the three days went to 213. Other than the hungries, it's prestty good for giving you the energy boost. That is where a diet and excercise program needs to start, the boost off the couch or chair. This does it. Please, PLEASE!! If you have risk factors, check with the doc. I am low risk, though I have sleep apnea. It's a good supplement, but only you can maximize its effectiveness.
Stephen of Arkansas, USA writes:
The first day I took EFX was an awakening. EFX gives you so much more energy than a cup of coffee. However, EFX does not give you a "jittery" effect. I strongly suggest drinking nothing but water with EFX because anymore intake of caffeine will definitely be too much. EFX also seems to keep me going all day long even hours I have taken the daily dosage.
Tom of Ohio, USA writes:
Day 1 of taking Xenadrine EFX. I definitely noticed an increase in energy today, but cannot say for certain if that's just an artifact of the caffeine in the pill or the result of getting more sleep lately. This is the first time I've ever used any supplements. I'm three and a half months out from my wedding and hoping to drop 10-15 pounds by the big day. Updates will continue and here' to hoping it works.
Karla of Texas, USA writes:
Let me just say that it is difficult to find something that can compete with ephedra-based fat burners, but this is a great alternative. Not only does it give me plenty of energy, it also seems to put me in a great mood. When I got on the scale a few days later I was pleasantly surprised. I use it for maintenance, and I'm sure it's also great for people that are getting started or on their way to reaching their weight loss goals.
Cynthia of Oregon, USA writes:
On day 2 of this supplement. I previously used Hydroxycut without a lot of results, but with a lot of jitters. This has given me absolutely no jitters at all, but it still has totally bottomed out my appetite! So far, I am very impressed! I am looking forward to seeing how it has done for me in terms of weight loss in a few weeks, combined, of course, with exercise and diet.
Tom of Ohio, USA writes:
After three weeks---Use has been somewhat sporadic. A two-pill dose twice a day is definitely overkill for my size and weight (5'10", 170 lbs.), resulting in a racing heartbeat along with the energy boost. Although I'm far from a medical professional, my degree in biology definitely leads me to believe that the bulk of the effect felt by these pills comes from the caffeine. Again, that's just an opinion. As far as my experiment with supplements, it's over. I am discontinuing use. Thankfully, wedding planning is going along extremely well, allowing me the time to get back to the gym more steadily. My advice--put in the sweat etiquette. You'll get better, longer lasting results. Best of luck to you!
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