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User Reviews for Metformin

Also known as: Glumetza Riomet Riomet ER

Metformin has an average rating of 7.0 out of 10 from a total of 566 ratings on Drugs.com. 57% of those users who reviewed Metformin reported a positive effect, while 17% reported a negative effect.

Condition Avg. Rating Reviews Compare
Polycystic Ovary Syndrome  Off-label
7.7
258 reviews 38 medications
Diabetes, Type 2  
6.1
227 reviews 151 medications
Insulin Resistance Syndrome  Off-label
7.6
52 reviews 8 medications
Female Infertility  Off-label
6.7
27 reviews 24 medications
Diabetes, Type 3c  Off-label
10.0
2 reviews 1 medications
Summary of Metformin reviews 7.0 566 reviews

Reviews may be moderated or edited before publication to correct grammar and spelling or to remove inappropriate language and content. Reviews that appear to be created by parties with a vested interest in the medication will not be published. As reviews and ratings are subjective and self-reported, this information should not be used as the basis for any statistical analysis or scientific studies.

Reviews for Metformin

Stuef · Taken for 1 to 6 months May 1, 2021

For Diabetes, Type 2: “I am on Metformin and many blood pressure meds and so I am constipated I’ve had to take laxatives help me lose weight instead gaining like I was. Hope helps anyone and get better!”

8 / 10
Maggie April 20, 2021

For Insulin Resistance Syndrome: “I have been on Metformin 500mg twice a day . I have taken it for almost 2 years now. I am also a 5 bypass heart patient with 4 Stents. I have high Cholesterol and I am a Diabetic with Psoriatic Arthritis. I started off at 170lbs dieting, exercising every day. Since I started the Metformin , I have gained all my weight back. I am miserable and now I’m at 193lbs.I am getting depressed. I don’t know what to do now.”

5 / 10
Devan Graves April 15, 2021

For Polycystic Ovary Syndrome: “I started taking Metformin for PCOS, I first got a headache, then muscle cramps and aches, I didn’t think anything of it until they started getting worse and then I got shortness of breath and drowsiness. I ended up going to the ER for possible lactic acidosis, they say it wasn’t the case but I honestly don’t believe it. I quit Metformin 3 days ago and I’m still having muscle cramps, aches and then a burning and numb sensation in my thighs. I can’t believe taking this drug for only a week did all of these things.”

1 / 10

Frequently asked questions

Ivyjoe March 7, 2021

For Female Infertility: “If you take the medication with food you'll avoid an upset stomach, avoid processed sugar (metformin basically just makes you expell it) and you'll avoid the worst diarrhea of your life, I started taking metformin in January 2019 for infertility and PCOS symptoms. It helped regulate my period. Within 2 months of taking it (coupled with a dietary change of no processed sugars I lost 40lbs in 4 months and I was pregnant by April 2019. Started taking metformin again to help with POS symptoms for ovulation in October 2020 (between then and March total weight loss 50lbs) pregnant positive March 2021 my doctor believes it's a combination of the metformin for ovulation and weight loss making it easier to get pregnant hope this helps you on your journey”

10 / 10
HunnyBunny September 28, 2020

For Female Infertility: “I am 29 years old. I started metformin after having a large cyst rupture on my right ovary. I got a proper diagnosis of PCOS after that. I was on metformin for 10 months at 1000mg daily. My cycles became regulated. They still weren't the typical 28 days, but I got one every month at least. I tested positive with a pregnancy test after 10 months and am currently 10 weeks pregnant! We didn't take anything else. I only took the metformin. I hope this helps!”

10 / 10
Vrh · Taken for less than 1 month March 14, 2021

For Insulin Resistance Syndrome: “I’ve been on this medication for a small period of time. I’m taking 1000 mg of IR per day and so far none of those scary side effects many people have mentioned. I’ve had mild stomach cramps and nausea that lasts maybe 10 minutes of the day. Definitely a reduce in appetite however. I also am having less mood swings, thank goodness. I’m really hoping this will help with weight loss! I will update this review in a month or two.”

9 / 10
Sid January 21, 2020

For Polycystic Ovary Syndrome: “Guys don’t give up. I took Metformin 4 and half years ago for my PCSO as I was trying to conceive. I did one round of clomid and fell pregnant but had an ectopic pregnancy and had my right side tube removed. Then a year later we went for IVF round and that was unsuccessful. I gave my self some time to recover from the heart ache. My doctor recommended me to take Metformin to regulate my period. I started with 3 tables a day 1500mg, I experienced nausea for first 2/3 week I did lose few pounds but was never overweight (BMI 24). I started taking tablets in January and period starts to regulate after two months. Me and husband had appointment for second round of IVF in June 15 and I decide to do a pregnancy test in June 2015 as I was feeling very tried and to my surprise it came out positive. I took Metformin for 5 months to give me a miracle baby after one test tube baby. My baby was born on time and healthy. He is turning 4 years old next month.”

10 / 10

More FAQ

Grateful February 23, 2020

For Insulin Resistance Syndrome: “Found out I was insulin resistant after a 2 hour glucose test. My Dr prescribed Glucophage which I was very apprehensive of taking. I happen to suffer from severe anxiety and bouts of depression. After taking this drug, my life changed. No depression, no anxiety and no brain fog. I didn't experience any negative side effects. This has literally changed my life. No psychiatrist has ever been able to cure my anxiety. Happy to say I am cured. Anxiety and depression free for the first time in 15 years”

10 / 10
Ana ruby · Taken for 1 to 6 months February 17, 2021

For Diabetes, Type 2: “I was taken metformin for 5 months now and am losing a bit of my weight but one thing my concerned is I'm having diarrhoea all time and the worst part is if I'm going out like for walking or groceries middle of this situations I really need to go toilet straight away otherwise I will be poop on my jeans. This is really disturbing for me because some part of my daily life activities is gone. I need to stay home or if I need to go somewhere it should be near in the restroom. I don't know if some people with diabetes type 2 is having experience same with me...thanks”

1 / 10
Anonymous · Taken for less than 1 month April 27, 2020

For Polycystic Ovary Syndrome: “when I was 28 I took Metforman within a month I got pregnant. I have PCOS. I couldn't figure out why all these years I couldn't get pregnant. so the Dr done blood work. And it was my insulin because I have pcos. And now I am 30. I just started back taking the Metforman again because I'm trying to have another baby And I'm taking prenatal vitimans. Good luck on trying to get pregnant. Sending baby dust y'all's way. And mine.”

10 / 10
Mason25 · Taken for less than 1 month July 26, 2014

For Polycystic Ovary Syndrome: “My story is similar to those who have posted. I gained A LOT of weight, and had unwanted hair growth due to the polycystic ovarian syndrome. I've been on metformin for almost 3 weeks and have lost 13lbs. The day I started the metformin, I also started a low carb diet. Prior to metformin, I couldn't control my craving for salty, carb filled food. For the past two and a half weeks I have been able to finally control the cravings. My energy levels have increased by 50%. I also waxed the unwanted hair the day I started, and already I have noticed that less is growing back in. I wish I started metformin two years ago because I literally feel like PCOS has taken two years of my life away from me! I hope it works for others as well as it has worked for me.”

10 / 10
Momtobe0728 · Taken for less than 1 month July 30, 2019

For Polycystic Ovary Syndrome: “Metformin definitely works. Me and my husband been trying for almost a year before seeking for doctor help. Find out that I have PCOS. My OB doctor immediately put me on metformin 500mg for the first two weeks and increased it to 1000mg on the third week. I started on 6/28 and by 7/28 (the date that I will never forget in my entire life), I got a positive pregnancy test. That mean I got pregnant after 2 weeks by using Metformin along with eating healthy and working out 40 minutes per day. Ladies, don't ever give up and always keep your hope up. And most important thing is prayers. "Just ask, and you will received. Just knock, and the door will be opened."”

AverageGuy50yrsold · Taken for less than 1 month May 5, 2020

For Diabetes, Type 2: “So far Metformin has been a wonder drug for me. I'm dropping weight, not hungry at all, and my energy levels are up. I'm taking one with each meal. I'm losing 5+ lbs a week and it's all from my stomach fat. I've had one bout of diarrhea but that was in the first 3 days of use and when I took 2 in the AM versus 1 with each meal. I do think I need to drink more water with this prescription as it seems to slow bowel movements down. No other issues. I'm taking a blood pressure medication and B-12 supplements with it. And a multivitamin.”

10 / 10
Hopeful Wife December 15, 2019

For Female Infertility: “I'm 34-years old and my DH and I have been TTC on and off for 10 years. I was diagnosed with "unexplained" infertility. I switched doctors, she diagnosed me with PCOS and prescribed me metformin. I took for a month (my dose of metformin was one 500 milligram tablet daily for 2 weeks/ then 2 a day) & took a pregnancy test. For the first time in my life, I recieved a positive!! At my first appointment, it was determined that I had an ectopic pregnancy. It was devastating. I had to wait 3 months after that to start trying again; however, I'm convinced the metformin worked! Good luck to you all!! I'll update when/if we get our miracle. Keep the faith ladies! Lots of prayers to those struggling to conceive. May God bless u all.”

10 / 10
Elizabeth54321 March 3, 2015

For Polycystic Ovary Syndrome: “I'd like to share a very positive experience with Metformin. I was diagnosed with Polycystic ovarian syndrome after very irregular periods and anovulatory cycles. I already worked out regularly and was a healthy weight. My husband and I tried for a very long time to conceive and were starting to lose hope. My doctor prescribed 1500mg per day. I experienced mild stomach discomfort and no other side effects. The first month, my cycle length was cut in half and the second month, I got pregnant! I never thought the day would come that I would see a positive pregnancy test. I continued the Metformin through my first trimester and we now have a perfect baby boy. Keep your head up and give it a try...I am so thankful that I did! ”

10 / 10
Renee · Taken for 1 to 6 months January 30, 2021

For Diabetes, Type 2: “My doctor just put me on Metformin extended release 500mg twice a day and I'm getting a lot of brain fog I've been on it for 6 months and I'm getting very forgetful I wanted to know does anybody else experience this it's very hard to concentrate”

1 / 10
Jo-ela October 28, 2014

For Polycystic Ovary Syndrome: “This medication has changed my life!!! I only regret that I did not take it sooner (like in my 20's) After suffering through years of acne and struggling to get pregnant when I wanted (frustrating business when your not ovulating at all) and people asking constantly if I was pregnant (due to my big fat tummy that I could NEVER get rid of...) I finally found Metformin. Now, not only has my skin cleared up, my weight also came off AND I was able to have my beautiful 4th child easily - because my periods have become bang on regular. I am so blessed to have had four children with polycystic ovarian syndrome but it was a long road trying for most of them. This medicine HAS changed my life in that it has given me ME back - the CONFIDENT ME I am supposed to be.”

9 / 10
CoolMomLes March 15, 2015

For Insulin Resistance Syndrome: “Life changing! 500 mg 1x/ day, and low carb diet ( 7+/- servings a day and when I started, I was 375 lbs) very compliant, 60 lb loss in 60 days, added daily hour of cardio (Zumba), continued and in 24 months lost 150 lbs. ALL side effects of metformin are indicators that you're eating too many carbs. A doctor that prescribes metformin that doesn't also prescribe a low carb diet is being absurd. I've been amazed at how many people I've talked to over the years that have had that happen. Diarrhea, nausea, metallic taste, all mean you're eating the wrong things! They're not a reason to quit the meds. They're proof you need to eat low carb. 7 years later, still down 100, and increasing dose to continue losing.”

10 / 10
Dani1995 · Taken for 1 to 6 months June 4, 2020

For Insulin Resistance Syndrome: “Hello I'd like to share my experience. I have a mental illness and the meds I'm on caused me to gain a little extra weight. There was no way I wanted to change my mental health meds as I didn't want to fall back into hospital again. Anyway cut the story short I was prescribed metformin months ago. I was 98.2kg I am now 93.5kg I am happy I am losing the weight I have cut down on all the junk foods and added more fruit and salads to my diet. It also has helped me with waking up during the night and wanting to eat. I hope to lose more but time will tell.”

5 / 10
QueenQ2 September 12, 2019

For Insulin Resistance Syndrome: “Feeling energized, my skin, hair and nails look flawless, my mood has improved tremendously, I feel prettier and somehow sexier. I'm even turning some heads at the stop lights lol Not carving for sweets and not feeling hungry at night. Eating half of my usual portions because I feel plenty after a few bites. No headaches or dizziness just a little stomach looseness. I'm always thirsty which is good because I'm drinking 1.5 lit of water when I was used to 500 ml only.My belly looks definitely less bloated. I love you metformin <3”

8 / 10
Aonghus · Taken for 1 to 6 months May 27, 2020

For Insulin Resistance Syndrome: “I have low testosterone, high blood pressure , and over-weight {291lbs}) for the past 20 years. I started Metformin in mid-January and worked my way up to a dose of 2000mg per day. As of today (May 27, 2020), I have lost a total of 53 pounds and it has reduced my appetite by more than half. My blood pressure is starting to drop to the point of needing to have my meds adjusted. I am mountain biking again. I am feeling great. I have some of the side effects, but they are minimal. All my issues seem to have a connection to insulin resistance. I suggest doing your own research and talking to your doctor. Based on my research online, It seems this amount of weight loss is highly unusual.”

10 / 10
KD · Taken for 5 to 10 years June 3, 2020

For Diabetes, Type 2: “I have been taking Metformin ER for 10 years. It was working fine. Recently supplier was switched from Teva to Amneal. I found Amneal to cause high blood sugar and I discontinued. Switched to another supplier and BS is normal. I found out today Amneal is recalling Metformin ER 7 lots. I was taking a recalled lot. Recall is for higher level of carcinogenic contamination in these lots. Please report any adverse effects”

3 / 10
Sissy · Taken for 1 to 6 months January 31, 2020

For Diabetes, Type 2: “I tried regular Metformin and the extended release and my stomach just cannot handle it. I had severe stomach cramping and uncontrollable diarrhea...meaning when it hit, there was no warning and no time to get to the bathroom. I tried with meals, with milk, without meals and nothing could allow me to tolerate it.”

5 / 10
MIRIELYIS · Taken for 1 to 6 months July 13, 2017

For Polycystic Ovary Syndrome: “I was diagnosed with PCOS at 14 was always on birth control until this year now am 27 I went in to my obgyn and asked to get on metformin to regulate so I was prescribed 500mg four times a day sure enough my periods came like clock work and I was late this month took a test and got the BFP (A big fat positive pregnancy test) after taking it 6 months I finally conceived did not know this was a miracle pill I tried so many years and now my prayers were answered don't give up ladies there is hope am passing on baby dust to all of you... :)”

10 / 10
Jill · Taken for less than 1 month November 9, 2020

For Insulin Resistance Syndrome: “Been on metformin 5 days for insulin resistance, no side effects so far. Except I am extremely happy, is this a happy pill? My SSRI never came close to this when I was on it. Seriously good mood and no anxiety.”

10 / 10
RLD Texan · Taken for less than 1 month December 22, 2014

For Diabetes, Type 2: “I just started metformin 16 days ago. Explosive bowel motion probably most accurately describes my initial experience. It already seems to be getting better. I've lost 21 lbs, 233 to 212, in the past 16 days. My blood sugar went from 300's to 90's.”

10 / 10
Mk · Taken for 10 years or more November 21, 2019

For Diabetes, Type 2: “My husband was diagnosed with type 2 diabetes over 10 years ago. Started with metformin but the numbers were jumping high so the doctor added another one but numbers were still out of range, so another pill, then another was added and talk of insulin the next option. A blood pressure pill was added to protect the kidneys. The past summer my husband joined me on the keto lifestyle as well as intermittent fasting. He went off all med ( the doctor knew). His glucose readings were great. But the doctor told him that he wanted him to get back on metformin because the latest research showed that it can extend one's life and is good for the heart. My husband did not want to do this but I pushed and he started back on it. Well almost immediately his blood sugar spiked into the low 200's then mid 200's. He went off it and within 48 hours his numbers were down. He is in the 80's to low 100's doing keto & fasting.”

1 / 10
Stevehami September 6, 2014

For Insulin Resistance Syndrome: “My husband was diagnosed with Metabolic Syndrome and prescribed 4 metformin a day by an Endocrinologist after being misdiagnosed by our GP for hypothyroidism for months and being extremely tired and depressed. He had gained so much belly fat...and was 207 and 5ft 3 in!, not good. But after being one month on the Metformin he lost 20 lbs. this was in addition to limiting carbs in his diet. He feels so much better. He has so much more energy. And the weight continues to melt right off of his belly. We are so glad we decided to go to the Endocrinologist. He was spot on! In a few months I will have my slim husband back.”

This information is NOT intended to endorse any particular medication. While these reviews might be helpful, they are not a substitute for the expertise, knowledge and judgement of healthcare practitioners.