Fastin User Reviews & Ratings (Page 3)
Fastin has an average rating of 7.2 out of 10 from a total of 81 reviews on Drugs.com. 70% of reviewers reported a positive experience, while 22% reported a negative experience.
Reviews for Fastin
- Ros...
- Taken for 6 months to 1 year
- April 9, 2019
For Weight Loss (Obesity/Overweight) "Consumers, I've been on Fastin off and on for about a year now. I read most of the comments before posting my experience. I usually only take 1 in the morning before I worked out to give me the energy I need to complete my 5-mile walk. If I'm not working out that day, I take half of a pill due to the fast heart rate and slightly the jitters. To be honest, I haven't seen much of a weight loss. Could be I'll start for a week or 2 and then stop. My issue is I need to be consistent with working out and taking the pill to see results. I do believe they would work if taken properly. I read one comment, and the consumer said she lost 35 lbs, so that there is inspiring me to push forward to achieve my weight loss goal."
- Jsa...
- September 16, 2016
For Weight Loss (Obesity/Overweight) "Just bought them today, 9/16/2016, feeling a little optimistic for all the different reviews, but definitely worth a try. Hopefully, Fastin - XR can help me lose weight. I will write another review and rate this weight loss pill in 2 weeks from today."
Frequently asked questions
- Jes...
- Taken for less than 1 month
- January 24, 2019
For Weight Loss (Obesity/Overweight) "I was on Adipex off and on for a few years. Fastin seems similar to it. You really have to drink plenty of water and move! It boosts your metabolism, giving great energy and alertness. I've started with only half a pill, just as I did with Adipex. I'm hoping to see some weight loss with it!"
- Red...
- Taken for less than 1 month
- May 17, 2018
For Weight Loss (Obesity/Overweight) "Terrible! Terrifying! Don't take Fastin! I took a whole tablet, and within 15 minutes, my heart was pounding out of my chest. It was so bad that I could see my shirt moving with every heartbeat. If you are prone to panic attacks, this will make your heart race even more. My heart rate finally slowed after 1.5 hours, and then I had chills and jitters. I took this drug because my doctor wouldn't give me RX medication for weight loss."
Are you taking this medicine?
Your review helps others make informed decisions.- So ...
- Taken for less than 1 month
- May 10, 2019
For Weight Loss (Obesity/Overweight) "Do NOT use this product. It has a strong caffeine-like effect. I took it and had the worst possible headache and felt so nauseated. Yeah, no wonder you’ll lose weight, you’ll feel so sick you won’t want to put anything in your mouth. Gosh, I feel so lightheaded after taking this. Definitely do not recommend."
- Xna...
- December 15, 2017
For Weight Loss (Obesity/Overweight) "Do not buy these pills, they are horrible! I lost 10 pounds in 2 weeks, then I stopped and was eating healthy and working out every other day, and it made me gain 25 pounds after I stopped them! What a scam. Never buying again."
- Bec...
- April 5, 2016
For Weight Loss (Obesity/Overweight) "This pill is the devil! Don't do it! I have seriously considered contacting the FDA to have it removed from the shelves! Made me feel completely out of control of my body and sick to my stomach to the point I had to lay down and hope I wasn't having a heart attack! Don't buy this crap!"
- Pho...
- Taken for less than 1 month
- October 27, 2014
For Weight Loss (Obesity/Overweight) "Works great. If you have issues with heart rate, just take half a pill in the morning, and the other half in the afternoon to get used to it."
- Fit...
- Taken for 1 to 6 months
- December 7, 2014
For Weight Loss (Obesity/Overweight) "Fastin has helped me lose 10 lb. I started off with a half a pill and not doing full pills so my heart and body could get used to it. All I can say is I love this diet pill. REALLY HELPED ME."
- kj ...
- June 3, 2015
For Weight Loss (Obesity/Overweight) "All I have to say is try it. You will be glad you did. I lost 30 lbs in 30 days."
- Mis...
- May 15, 2015
For Weight Loss (Obesity/Overweight) "I started taking Fastin at the end of April 2015. It's now May 15th, and I have lost 13 lbs. I'm not doing anything different, just taking the pill. I love it!"
- Kus...
- Taken for less than 1 month
- April 16, 2020
For Weight Loss (Obesity/Overweight) "Started taking Fastin yesterday. Had increased heart rate and high blood pressure. Felt like I was having a heart attack."
- Anonymous
- September 11, 2008
For Weight Loss (Obesity/Overweight) "I used Fastin for about a year and a half, and it really did work with exercise. It helped my eating habits as well. I started at 225 lbs when I began Fastin, and when I stopped, I was at 164 lbs."
- mam...
- Taken for less than 1 month
- June 28, 2014
For Weight Loss (Obesity/Overweight) "I took Fastin this morning, and within 30 minutes, my heart was pounding so hard I thought I was going to throw up. I don't like the way it made me feel."
- lad...
- December 8, 2013
For Weight Loss (Obesity/Overweight) "Works great, already lost 20 pounds in 2 weeks."
- LuL...
- April 13, 2015
For Weight Loss (Obesity/Overweight) "I was taking 1/2 pill. It raced my heart, made me jittery. Hated the side effects."
- Jon...
- October 27, 2016
For Weight Loss (Obesity/Overweight) "I took 1 pill a day 4 years ago. Worked amazing. Started off weighing 306 on January 1st, was down to 220 for Easter. Had more children, so I'm about to hit again. Praying for the same results."
- lil...
- Taken for less than 1 month
- December 12, 2021
For Weight Loss (Obesity/Overweight) "Weird, but I have no side effects except no appetite. None of that fast heart beating or anything else! I love this stuff!"
- Anonymous
- March 30, 2014
For Weight Loss (Obesity/Overweight) "11 lbs in one week on Fastin"
- vil...
- Taken for less than 1 month
- October 23, 2015
For Weight Loss (Obesity/Overweight) "The pill gives you a lot of energy, pill makes your heart beat fast for the first hour, is a great appetite suppressant."
- Kat...
- Taken for 6 months to 1 year
- November 10, 2019
For Weight Loss (Obesity/Overweight) "I used to take this in the early seventies. I lost weight after the birth of my son easily with Fastin, then maintained that weight loss! What I would give to have that very same drug available to me!"
- Wif...
- Taken for less than 1 month
- September 3, 2019
For Weight Loss (Obesity/Overweight) "I took a half, and I could feel the heated body. Then my crazy mind took the other half, and now I'm restless. I'm sticking to the half of the pill until my body gets adapted to it."
- Cou...
- Taken for less than 1 month
- August 30, 2018
For Weight Loss (Obesity/Overweight) "If you want to lose weight but also feel like you’re dying, this is for you."
- car...
- Taken for less than 1 month
- July 17, 2017
For Weight Loss (Obesity/Overweight) "Way too much stimulant- increased heart rate and blood pressure immediately after taking one pill."
Are you taking this medicine?
Your review helps others make informed decisions.More about Fastin (phentermine)
- Check interactions
- Compare alternatives
- Reviews (81)
- Drug images
- Side effects
- Dosage information
- During pregnancy
- Drug class: anorexiants
- Breastfeeding
Patient resources
Other brands
Adipex-P, Lomaira, Ionamin, Phentride, ... +3 more
For Weight Loss (Obesity/Overweight) "Made me super sick. This was my first time trying it, I took the prescribed dose, and I've been trembling out of my skin for the last hour. My blood pressure is through the roof, and my heart rate is 141 bpm right now. I'm also nauseous and would be at the emergency room right now if not so terrified I'd crash my car if I tried to drive."