Review: Methylcobalamin side effects
In this review, we analyze Methylcobalamin side effects by the time on the drug, gender and age (0-60+) of the people who have side effects while taking Methylcobalamin. The review is based on 55 people who have side effects while taking Methylcobalamin from FDA and social media, and is updated regularly.
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What is Methylcobalamin
Methylcobalamin (latest outcomes from 63 users) has active ingredients of vitamin b12. It is often used in anaemia vitamin b12 deficiency.
It can also be called: B12, B-12, B Complex Vitamin, Bedumil, Cobamin, Cobalamin, Cyanocobalaminum, Cycobemin, Hydroxocobalaminum, Hydroxocobemine, Idrossocobalamina, Vitadurin.
On Jul, 22, 2014: 55 people who reported to have side effects when taking Methylcobalamin are studied
Most common side effects over time * :
|< 1 month||1 - 6 months||6 - 12 months||1 - 2 years||2 - 5 years||5 - 10 years||10+ years||not specified |
|Feeling Cold||Asthma||Gamma-glutamyltransferase Increased||Pneumonia||Cerebral Haemorrhage||n/a||Taste Disturbance||Interstitial Lung Disease |
|Visual Impairment||Vomiting||Tachyarrhythmia||Renal Impairment||Blood Pressure Increased||White Blood Cell Count Decreased |
|Altered Visual Depth Perception||Judgement Impaired||Heart Rate Decreased||Subdural Haematoma||Acne |
|Slow Heart Beat||Irritability||Blood Alkaline Phosphatase Increased||White Blood Cell Count Decreased||Pyrexia |
|Lip Dry||Partner Stress||Blood Lactate Dehydrogenase Increased||Multi-organ Failure||Decreased Appetite |
|Incontinence||Aggression||Blood Pressure Decreased||Gastric Ulcer Haemorrhage||Cough |
|Mydriasis||Judgement Impaired||Disseminated Intravascular Coagulation||Ileus |
|Abnormal Behaviour||Mydriasis||Duodenal Ulcer Haemorrhage||Vomiting |
|Drug Dependence||Irritability||Fall||Pruritus |
|Personality Change||Aggression||Malaise||Liver Disorder |
Most common side effects by gender * :
|Vomiting||Interstitial Lung Disease |
|Blood Pressure Increased||Pyrexia |
|White Blood Cell Count Decreased||Acne |
|Cerebral Haemorrhage||White Blood Cell Count Decreased |
|Pneumonia||Decreased Appetite |
|Skin Ulcer||Malaise |
|Subdural Haematoma||Ileus |
|Renal Impairment||Liver Disorder |
|Osteoporosis||Platelet Count Decreased |
Most common side effects by age * :
|n/a||n/a||Grand Mal Convulsion||Convulsion||Blood Alkaline Phosphatase Increased||Psychotic Disorder||Cutaneous Lupus Erythematosus||Interstitial Lung Disease |
|Vomiting||Leukoencephalopathy||Cytomegalovirus Infection||Delusion||Neutrophil Count Decreased||Acne |
|Pyrexia||Dysstasia||Large Intestinal Ulcer||Abnormal Dreams||Antinuclear Antibody Positive||White Blood Cell Count Decreased |
|Constipation||Dysarthria||Gastrointestinal Infection||Somnambulism||Pain||Decreased Appetite |
|Gastrooesophageal Reflux Disease||Paraplegia||Heart Rate Decreased||Aggression||Skin Lesion||Vomiting |
|Weight Decreased||Speech Disorder||Tachyarrhythmia||Restlessness||Lymphocyte Count Decreased||Cough |
|Gastrointestinal Disorder||Visual Impairment||Blood Pressure Decreased||Overdose||Haematocrit Increased||Malaise |
|Eating Disorder||Nystagmus||Gamma-glutamyltransferase Increased||Urinary Incontinence||Erythema||Platelet Count Decreased |
|White Blood Cell Count Decreased||Areflexia||Blood Lactate Dehydrogenase Increased||Abnormal Behaviour||White Blood Cell Count Decreased||Pyrexia |
|Convulsion||Memory Impairment||Visual Impairment||Hallucination||Sjogren's Syndrome||Pleural Effusion |
* Some reports may have incomplete information.
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Comments for this study:
BUNNY (4 months ago):
At one point, I think you stated that cyannocobalamin(CB) is another name for methylcobalamin (MB). But I.ve read that MB is produced naturally by the body if there are normal conditions, and CB is a synthetic form of vitamin B-12.
The distinction is important: On CB, one female had rapid, pounding heart beat w/chest pain and malaise. But on MB, no side effects. Important because she has pernicious anemia and needs B-12 supplementation.
Any other experiences like this?
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Comments from related studies:
From this study (4 weeks ago):
I was at the time of onset of health issues on a high-fat, low-carb vegan diet. Previously I had been on a no-fat, starch-based vegan diet, and in all those years never suffered any health issues, but wishing to bulk-up, switched to the high-fat approach. One day while sitting in my car reading I lost the ability to focus in on individual words. My eyes just couldn't (and still can't to a large degree) focus in on a small area. This did not occur gradually but all at once in one day. The next day, while reading a magazine in a waiting-room at a doctors office, I went completely blind in the center of my vision. I could make out forms, and shapes in the broad view, but had completely unable to make out individual areas. I was so alarmed I jumped up and immediately sped to the nearby ER, abandoning my cousin at her appointment. There the condition rapidly deteriorated, my vision further degrading to the point I thought I would be totally blind. When I went to the back, my first stop was a nurse who gave me a blood-pressure test. She said it was high. How high, I can't remember. The doctor performed an eye exam, but said he couldn't see anything wrong. He said it may be (just guessing) a diabetic issue, which was astounding to me, because at the time I consumed no carbs (far less than 100g a day), but was told that may have been inconsequential. I started taking the b12 and multivitamins AFTER symptoms developed.
From this study (4 weeks ago):
I am menopausal. Some night sweats, emotional issues, occasional depression. I am usually at a HR of 80 and sometimes I have pvcs and pacs (tested benign). I have occasional tachycardia. Recently I have begun having spells where I feel light-headed, kind of like I need to think to breathe,(like when I was on Vicodin) and my pulse rate goes down to 60 with some pvcs. I have NEVER had a slow heart rate. Everyone in my family has Tachycardia with pvc's (an electrical genetic defect I guess).
From this study (2 months ago):
I no longer take Nuvigil. I took it for approximately three months.
I only take the imitrex at onset of migraine.
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NOTE: The study is based on active ingredients and brand name. Other drugs that have the same active ingredients (e.g. generic drugs) are NOT considered.
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