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Benefiber Side Effects

Common Benefiber Side Effects


The most commonly reported Benefiber side effects (click to view or check a box to report):

Off Label Use (142)
Therapeutic Response Unexpected (62)
Incorrect Dose Administered (55)
Diarrhoea (43)
Constipation (37)
Overdose (35)
Abdominal Pain Upper (31)
Flatulence (30)
Nausea (25)
Diverticulitis (25)
Malaise (23)
Abdominal Distension (23)
Underdose (23)
Condition Aggravated (18)
Weight Decreased (18)
Vomiting (18)
Pain (15)
Dizziness (15)
Blood Glucose Increased (14)
Abdominal Pain (14)

➢ More



If you or someone in your family has experienced a serious side effect to a health product, you are encouraged to report the experience to your health care professional (e.g. physician, pharmacist). You could also complete a copy of the side effect reporting form or report your side effect to FDA.

Side effects reports are analyzed to discover potential health product safety signals. Some important reactions may take an extremely long time to develop or occur infrequently. Continued monitoring of adverse reactions is thus essential to maintain a comprehensive safety and effectiveness profile of health products.

Benefiber Side Effects Reported to FDA

The following Benefiber reports list potential signals of serious risks and new safety information that were identified using the FDA Adverse Event Reporting System (FAERS).
FAERS is a database that contains information on adverse event and medication errors reports submitted to FDA by healthcare professionals (such as physicians, pharmacists, nurses and others), consumers (such as patients, family members, layers and others) and manufacturers.


The appearance of Benefiber on this list does not mean that FDA has concluded that the drug has the listed risk. It means that FDA has identified a potential safety issue, but it does not mean that FDA has found a causal relationship between the drug and the listed risk.
Vision Blurred, Condition Aggravated, Incorrect Dose Administered
This is a report of a 86-year-old female patient (weight: NA) from US, suffering from the following symptoms/conditions: nutritional supplementation, who was treated with Benefiber W/ Wheat Dextrin (dosage: 2 To 4 Tablespoons A Day, start time: 2013), combined with:
  • Lamisil (Unk, Unk)
  • Vitamin D
  • Minerals Nos
and developed a serious reaction and side effect(s). The consumer presented with:
  • Vision Blurred
  • Condition Aggravated
  • Incorrect Dose Administered
which developed after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Benefiber W/ Wheat Dextrin treatment in female patients, resulting in vision blurred side effect.

Asthma, Swelling, Constipation, Pain, Faeces Hard
This report suggests a potential Benefiber W/ Wheat Dextrin Asthma, Swelling, Constipation, Pain, Faeces Hard side effect(s) that can have serious consequences. A 63-year-old female patient (weight: NA) from US was diagnosed with the following symptoms/conditions: NA and used Benefiber W/ Wheat Dextrin (dosage: 2 Tsp, Bid) starting 201309. Soon after starting Benefiber W/ Wheat Dextrin the patient began experiencing various side effects, including:
  • Asthma
  • Swelling
  • Constipation
  • Pain
  • Faeces Hard
Drugs used concurrently: NA. Although Benefiber W/ Wheat Dextrin demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as asthma, may still occur.

Skin Cancer, Therapeutic Response Unexpected
This Skin Cancer, Therapeutic Response Unexpected problem was reported by a consumer or non-health professional from US. A 84-year-old male patient (weight: NA) was diagnosed with the following symptoms/conditions: faeces hard,off label use. On 2008 this consumer started treatment with Benefiber W/ Wheat Dextrin (dosage: Unk, Unk). The following drugs were being taken at the same time: NA. When commencing Benefiber W/ Wheat Dextrin, the patient experienced the following unwanted symptoms/side effects:
  • Skin Cancer
  • Therapeutic Response Unexpected
Although all drugs are carefully tested before they are licensed for use, they carry side effect risks. Some side effects, such as skin cancer, may become evident only after a product is in use by the general population.

Hypersensitivity, Pruritus, Erythema, Fatigue, Chest Discomfort, Dyspnoea, Abdominal Pain Upper, Abdominal Distension, Irritability
This is a report of a 59-year-old female patient (weight: NA) from US. The patient developed the following symptoms/conditions: prophylaxis,irritable bowel syndrome,constipation and was treated with Benefiber Fiber Supp Vit B + Folic Acid (dosage: 2 Tsp, Bid) starting Aug 27, 2013. Concurrently used drugs:
  • Benefiber W/ Wheat Dextrin (3 Tsp, Tid)
  • Benefiber W/ Wheat Dextrin (2 Tsp, Bid)
Soon after that, the consumer experienced the following side effects:
  • Hypersensitivity
  • Pruritus
  • Erythema
  • Fatigue
  • Chest Discomfort
  • Dyspnoea
  • Abdominal Pain Upper
  • Abdominal Distension
  • Irritability
This opens a possibility that Benefiber Fiber Supp Vit B + Folic Acid treatment could cause the above reactions, including hypersensitivity, and some female subjects may be more susceptible.


Nephrolithiasis, Therapeutic Response Unexpected, Off Label Use
A 52-year-old male patient (weight: NA) from US with the following symptoms/conditions: constipation started Benefiber W/ Wheat Dextrin treatment (dosage: 1 Tsp, Qd) on 201305. Soon after starting Benefiber W/ Wheat Dextrin treatment, the subject experienced various side effects, including:
  • Nephrolithiasis
  • Therapeutic Response Unexpected
  • Off Label Use
Concurrently used drugs: NA. This finding indicates that some male patients could be more vulnerable to Benefiber W/ Wheat Dextrin.

Intestinal Obstruction, Abdominal Discomfort, Diarrhoea, Malaise, Therapeutic Response Unexpected, Off Label Use, Incorrect Dose Administered
A 72-year-old female patient from US (weight: NA) experienced symptoms, such as: constipation prophylaxis and was treated with Benefiber W/ Wheat Dextrin(dosage: 1 Lid Full, Bid). The treatment was initiated on NS. After that a consumer reported the following side effect(s):
  • Intestinal Obstruction
  • Abdominal Discomfort
  • Diarrhoea
  • Malaise
  • Therapeutic Response Unexpected
  • Off Label Use
  • Incorrect Dose Administered
Concurrently used drugs, which potentially could have contributed to side effect(s) or affected Benefiber W/ Wheat Dextrin efficacy: NA.

Cataract, Blood Cholesterol Increased, Ocular Hyperaemia, Eye Pain, Headache, Constipation, Off Label Use
In this report, Benefiber was administered for the following condition: nutritional supplementation,constipation.A 76-year-old female consumer from US (weight: NA) started Benefiber treatment (dosage: NA) on 2003.Sometime after starting the treatment, the patient complained of the following side effect(s):
  • Cataract
  • Blood Cholesterol Increased
  • Ocular Hyperaemia
  • Eye Pain
  • Headache
  • Constipation
  • Off Label Use
A possible interaction with other drugs could have contributed to this reaction: NA.Establishing a causal relationship between a specific drug and consumer's side effects is complex, but it is possible that in this report Benefiber treatment could be related to the listed above side effect(s).

Urinary Tract Infection, Depression, Abdominal Pain Upper, Flatulence, Incorrect Dose Administered
This is a report of the following Benefiber side effect(s):
  • Urinary Tract Infection
  • Depression
  • Abdominal Pain Upper
  • Flatulence
  • Incorrect Dose Administered
A 71-year-old female patient from BR (weight: NA) presented with the following condition: gastrointestinal disorder,sedation,sjogren^s syndrome and received a treatment with Benefiber (dosage: Unk, Bid) starting: NS.The following concurrently used drugs could have generated interactions:
  • Rivotril (Unk, Unk)
  • Plaquinol (Unk, Unk)
  • Olcadil (Unk, Unk)
  • Digedrat (Unk, Unk)
This report suggests that a Benefiber treatment could be associated with the listed above side effect(s).

Haemorrhoids, Rash Papular, Pain, Burning Sensation, Pruritus, Off Label Use, Incorrect Dose Administered
This Benefiber W/ Wheat Dextrin report was submitted by a 83-year-old female consumer from US (weight: NA). The patient was diagnosed with: nutritional supplementation,bowel movement irregularity and Benefiber W/ Wheat Dextrin was administered (dosage: 1 Tablespoon, Bid) starting: 2012. The consumer developed a set of symptoms:
  • Haemorrhoids
  • Rash Papular
  • Pain
  • Burning Sensation
  • Pruritus
  • Off Label Use
  • Incorrect Dose Administered
Other drugs used simultaneously: NA.Those unexpected symptoms could be linked to a Benefiber W/ Wheat Dextrin treatment, however establishing a potential drug-safety problem requires a more detailed clinical analysis.

Diverticulitis, Diarrhoea, Off Label Use, Underdose
This is a report of a possible correlation between Benefiber W/ Wheat Dextrin use and the following symptoms/side effect(s):
  • Diverticulitis
  • Diarrhoea
  • Off Label Use
  • Underdose
which could contribute to an assessment of Benefiber W/ Wheat Dextrin risk profile.A 63-year-old female consumer from US (weight: NA) was suffering from prophylaxis,nutritional supplementation and was treated with Benefiber W/ Wheat Dextrin (dosage: 1 Tsp, Qd) starting NS.Other concurrent medications: NA.

Atrial Fibrillation, Therapeutic Response Unexpected, Off Label Use, Overdose
A 58-year-old male patient from US (weight: NA) presented with the following symptoms: constipation and after a treatment with Benefiber W/ Wheat Dextrin (dosage: 48 To 96 Tsp, Qd) experienced the following side effect(s):
  • Atrial Fibrillation
  • Therapeutic Response Unexpected
  • Off Label Use
  • Overdose
The treatment was started on 2008. Benefiber W/ Wheat Dextrin was used in combination with the following drugs:
  • Psyllium (Unk)
This report could alert potential Benefiber W/ Wheat Dextrin consumers.

Intervertebral Disc Disorder, Back Pain, Off Label Use, Therapeutic Response Unexpected
In this report, a 79-year-old male patient from US (weight: NA) was affected by a possible Benefiber Stick Packs side effect.The patient was diagnosed with bowel movement irregularity,nutritional supplementation. After a treatment with Benefiber Stick Packs (dosage: 1-2 Df, Unk, start date: 201212), the patient experienced the following side effect(s):
  • Intervertebral Disc Disorder
  • Back Pain
  • Off Label Use
  • Therapeutic Response Unexpected
The following simultaneously used drugs could have led to this reaction: NA.The findings here stress that side effects should be taken into consideration when evaluating a Benefiber Stick Packs treatment.

Prostatomegaly, Off Label Use, Incorrect Dose Administered
This is a report of a 64-year-old male patient from US (weight: NA), who used Benefiber W/ Wheat Dextrin (dosage: 2 Tsp, Tid) for a treatment of gastrooesophageal reflux disease. After starting a treatment on NS, the patient experienced the following side effect(s):
  • Prostatomegaly
  • Off Label Use
  • Incorrect Dose Administered
The following drugs could possibly have interacted with the Benefiber W/ Wheat Dextrin treatment NA.Taken together, these observations suggest that a Benefiber W/ Wheat Dextrin treatment could be related to side effect(s), such as Prostatomegaly, Off Label Use, Incorrect Dose Administered.

Large Intestine Polyp, Off Label Use, Therapeutic Response Unexpected
This large intestine polyp side effect was reported by a consumer or non-health professional from US. A 69-year-old male patient (weight:NA) experienced the following symptoms/conditions: bowel movement irregularity. The patient was prescribed Benefiber W/ Wheat Dextrin (dosage: 1 Tsp, Qd), which was started on 201210. Concurrently used drugs: NA. When starting to take Benefiber W/ Wheat Dextrin the consumer reported the following symptoms:
  • Large Intestine Polyp
  • Off Label Use
  • Therapeutic Response Unexpected
These side effects may potentially be related to Benefiber W/ Wheat Dextrin.

Multiple Sclerosis, Oesophageal Spasm, Muscle Spasms, Reflux Gastritis, Neuropathy Peripheral, Anxiety, Therapeutic Response Unexpected, Underdose
This is a Benefiber W/ Wheat Dextrin side effect report of a 62-year-old female patient (weight:NA) from US, suffering from the following symptoms/conditions: NA, who was treated with Benefiber W/ Wheat Dextrin (dosage:2 Df, Unk, start time: NS), combined with:
  • Dexilant
  • Miralax (Unk)
  • Stool Softener (Unk)
, and developed a serious reaction and a multiple sclerosis side effect. The patient presented with:
  • Multiple Sclerosis
  • Oesophageal Spasm
  • Muscle Spasms
  • Reflux Gastritis
  • Neuropathy Peripheral
  • Anxiety
  • Therapeutic Response Unexpected
  • Underdose
which developed after the beginning of treatment. This side effect report can indicate a possible existence of increased vulnerability to Benefiber W/ Wheat Dextrin treatment in female patients suffering from NA, resulting in multiple sclerosis.

Polyp, Off Label Use, Underdose
This report suggests a potential Benefiber Sugar Free polyp side effect(s) that can have serious consequences. A 80-year-old female patient from US (weight:NA) was diagnosed with the following health condition(s): medical diet,bowel movement irregularity and used Benefiber Sugar Free (dosage: 1-2 Df, Qhs) starting NS. Soon after starting Benefiber Sugar Free the patient began experiencing various side effects, including:
  • Polyp
  • Off Label Use
  • Underdose
Drugs used concurrently:NA. Although Benefiber Sugar Free demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as polyp, may still occur.

Upper Limb Fracture, Fall, Herpes Zoster, Influenza, Off Label Use
This upper limb fracture problem was reported by a consumer or non-health professional from US. A 64-year-old female patient (weight: NA) was diagnosed with the following medical condition(s): NA.On NS a consumer started treatment with Benefiber Sugar Free (dosage: 3 Df, Qd). The following drugs/medications were being taken at the same time: NA. When commencing Benefiber Sugar Free, the patient experienced the following unwanted symptoms /side effects:
  • Upper Limb Fracture
  • Fall
  • Herpes Zoster
  • Influenza
  • Off Label Use
Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as upper limb fracture, may become evident only after a product is in use by the general population.

Diabetes Mellitus, Bowel Movement Irregularity, Off Label Use, Incorrect Dose Administered
This is a Benefiber W/ Wheat Dextrin side effect report of a 68-year-old female patient (weight: NA) from US. The patient developed the following symptoms/conditions: dyspepsia,bowel movement irregularity and was treated with Benefiber W/ Wheat Dextrin (dosage: 3 Tsp, Qd) starting NS. Concurrently used drugs: NA. Soon after that, the consumer experienced the following of symptoms:
  • Diabetes Mellitus
  • Bowel Movement Irregularity
  • Off Label Use
  • Incorrect Dose Administered
This opens a possibility that Benefiber W/ Wheat Dextrin could cause diabetes mellitus and that some female patients may be more susceptible.

Diverticulitis, Polyp, Abdominal Pain Upper, Therapeutic Response Unexpected, Off Label Use
A 68-year-old female patient (weight: NA) from US with the following symptoms: nutritional supplementation,bowel movement irregularity started Benefiber Plus Calcium With Wheat Dextrin treatment (dosage: 3 Df, Qd) on NS. Soon after starting Benefiber Plus Calcium With Wheat Dextrin treatment, the consumer experienced several side effects, including:
  • Diverticulitis
  • Polyp
  • Abdominal Pain Upper
  • Therapeutic Response Unexpected
  • Off Label Use
. Concurrently used drugs: NA. This finding indicates that some patients can be more vulnerable to developing Benefiber Plus Calcium With Wheat Dextrin side effects, such as diverticulitis.

Irritable Bowel Syndrome, Constipation, Diarrhoea
This irritable bowel syndrome side effect was reported by a consumer or non-health professional from US. A 39-year-old female patient (weight:NA) experienced the following symptoms/conditions: NA.The patient was prescribed Benefiber W/ Wheat Dextrin (dosage: 2 Tsp, Unk), which was started on Apr 18, 2013. Concurrently used drugs:
  • Linaclotide (145 Mcg, Qd)
  • Stool Softener
.When starting to take Benefiber W/ Wheat Dextrin the consumer reported symptoms, such as:
  • Irritable Bowel Syndrome
  • Constipation
  • Diarrhoea
These side effects may potentially be related to Benefiber W/ Wheat Dextrin.

Weight Decreased, Anaemia, Gastrointestinal Disorder, Condition Aggravated, Diarrhoea, Muscle Spasms, Malaise, Off Label Use, Therapeutic Response Unexpected
This is a report of a 70-year-old female patient (weight: NA) from US, suffering from the following symptoms/conditions: bowel movement irregularity, who was treated with Benefiber Stick Packs (dosage: 1 Df, Qd, start time: NS), combined with:
  • Benefiber W/ Wheat Dextrin (Unk, Unk)
and developed a serious reaction and side effect(s). The consumer presented with:
  • Weight Decreased
  • Anaemia
  • Gastrointestinal Disorder
  • Condition Aggravated
  • Diarrhoea
  • Muscle Spasms
  • Malaise
  • Off Label Use
  • Therapeutic Response Unexpected
which developed after the beginning of treatment. This case can indicate the possible existence of increased vulnerability to Benefiber Stick Packs treatment in female patients, resulting in weight decreased side effect.

Bronchitis, Abdominal Distension, Endotracheal Intubation Complication, Throat Irritation, Therapeutic Response Unexpected, Off Label Use
This report suggests a potential Benefiber Stick Packs Bronchitis, Abdominal Distension, Endotracheal Intubation Complication, Throat Irritation, Therapeutic Response Unexpected, Off Label Use side effect(s) that can have serious consequences. A 78-year-old female patient (weight: NA) from US was diagnosed with the following symptoms/conditions: irritable bowel syndrome,nutritional supplementation and used Benefiber Stick Packs (dosage: 1 Df, Tid) starting NS. Soon after starting Benefiber Stick Packs the patient began experiencing various side effects, including:
  • Bronchitis
  • Abdominal Distension
  • Endotracheal Intubation Complication
  • Throat Irritation
  • Therapeutic Response Unexpected
  • Off Label Use
Drugs used concurrently: NA. Although Benefiber Stick Packs demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as bronchitis, may still occur.

Arthropathy, Anorectal Disorder, Therapeutic Response Unexpected, Off Label Use
This Arthropathy, Anorectal Disorder, Therapeutic Response Unexpected, Off Label Use problem was reported by a consumer or non-health professional from US. A 78-year-old female patient (weight: NA) was diagnosed with the following symptoms/conditions: constipation,diarrhoea,flatulence. On NS this consumer started treatment with Benefiber W/ Wheat Dextrin (dosage: 3 Heaping Tsp, Once Or Twice A Day). The following drugs were being taken at the same time: NA. When commencing Benefiber W/ Wheat Dextrin, the patient experienced the following unwanted symptoms/side effects:
  • Arthropathy
  • Anorectal Disorder
  • Therapeutic Response Unexpected
  • Off Label Use
Although all drugs are carefully tested before they are licensed for use, they carry side effect risks. Some side effects, such as arthropathy, may become evident only after a product is in use by the general population.

Thyroid Disorder, Cataract, Flatulence, Off Label Use, Underdose
This is a report of a 83-year-old female patient (weight: NA) from US. The patient developed the following symptoms/conditions: diarrhoea and was treated with Benefiber W/ Wheat Dextrin (dosage: 2 Tsp, Unk) starting NS. Concurrently used drugs: NA.Soon after that, the consumer experienced the following side effects:
  • Thyroid Disorder
  • Cataract
  • Flatulence
  • Off Label Use
  • Underdose
This opens a possibility that Benefiber W/ Wheat Dextrin treatment could cause the above reactions, including thyroid disorder, and some female subjects may be more susceptible.

Renal Failure, Thrombosis, Therapeutic Response Unexpected, Off Label Use, Incorrect Dose Administered
A 80-year-old male patient (weight: NA) from US with the following symptoms/conditions: bowel movement irregularity started Benefiber W/ Wheat Dextrin treatment (dosage: 3 Tsp, Bid) on NS. Soon after starting Benefiber W/ Wheat Dextrin treatment, the subject experienced various side effects, including:
  • Renal Failure
  • Thrombosis
  • Therapeutic Response Unexpected
  • Off Label Use
  • Incorrect Dose Administered
Concurrently used drugs: NA. This finding indicates that some male patients could be more vulnerable to Benefiber W/ Wheat Dextrin.

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Keep Track of Side Effects

Note Your Observations

It is really important to keep of your symptoms, right from the time you start a new medicine. You can do it any way you prefer: in a notebook, in a computer file or using our online tool. You should also note down any other medicines you are taking at the same time, because there could be an interaction between these medicines.

Why Your Notes are Important

Your notes could be helpful in several ways:

  • You can use them to remind you of details that may alert your health care professional(s) to a problem
  • You will have a record to refer to in the future, in case you are ever prescribed the same medicine again

  • Log Form

    You can use the following log form to write down important information, like the date and time you experienced a side effect and your symptoms, how strong the symptoms were, and any other medicines you were using.

    Medicine Name and Dosage:
    Side Effects Scale Date & Time Other Medicine(s) or Treatment(s)
    Scale: 1 = very mild to 10 = very bad

    You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.


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