Check a pair

Psyllium Husk

Soluble fiber supplement that supports digestive health, cholesterol management, and blood sugar control

Scientific namePlantago ovata FormulaComplex polysaccharides Molecular weightVariable fiber polymers g/mol CAS8063-16-9
95 absorption score
8 safety / 10
15 USD per month
5 documented interactions

Check it against something

No documented links

Psyllium Husk with:

Compatibility score 70 out of 100
70 out of 100
No known interaction No documented interaction. Standard timing for each applies.

Check it against your whole stack →

What it does

mechanism and evidence for each claim

Improved digestive regularity

Promotes healthy bowel movements and relieves constipation

Absorbs water to form gel-like bulk that facilitates bowel movements Evidence A-grade 1-3 days

Cholesterol reduction

Significantly lowers LDL cholesterol and total cholesterol

Binds bile acids and cholesterol for elimination Evidence A-grade 4-8 weeks

Blood sugar control

Helps regulate blood glucose and improve glycemic control

Slows glucose absorption and improves insulin sensitivity Evidence A-grade 2-6 weeks

Weight management support

Promotes satiety and may support healthy weight loss

Increases fullness and reduces caloric intake Evidence B-grade 4-12 weeks

Prebiotic gut health support

Feeds beneficial gut bacteria and improves microbiome

Fermented by gut bacteria to produce beneficial short-chain fatty acids Evidence B-grade 2-8 weeks

Others take these for the same thing

Same goal, different mechanism — check any of them against this one

Every pair we checked

12 combinations scored by the engine
Psyllium Husk + Caffeine No documented interaction either way No known interaction 70
Psyllium Husk + Creatine Monohydrate No documented interaction either way No known interaction 70
Psyllium Husk + Vitamin D3 No documented interaction either way No known interaction 70
Psyllium Husk + Calcium Carbonate No documented interaction either way No known interaction 70
Psyllium Husk + Whey Protein No documented interaction either way No known interaction 70
Psyllium Husk + Lactase No documented interaction either way No known interaction 70
Psyllium Husk + Bovine Collagen No documented interaction either way No known interaction 70
Psyllium Husk + DHA No documented interaction either way No known interaction 70
Psyllium Husk + Turmeric No documented interaction either way No known interaction 70
Psyllium Husk + Omega-3 + Curcumin + Vitamin D Triple Anti-Inflammatory Formula Enhanced cardiovascular and anti-inflammatory benefits Works better together 78
Psyllium Husk + Chromium GTF Enhanced blood sugar control Works better together 78
Psyllium Husk + Lactobacillus acidophilus Enhanced gut health and microbiome benefits Works better together 82

Dosage

With meals and water
Daily5-15g
Digestive health5-10g daily with water
Cholesterol reduction7-15g daily with meals
Blood sugar control5-15g with meals
Weight management5-10g before meals

Before you take it

VeganYes

When to expect it

First Effects1-3 days for digestive benefits
Peak Benefits4-8 weeks for sustained cholesterol and metabolic benefits
Deficiency DevelopmentReturn to baseline within days of stopping
Toxicity OnsetRisk of obstruction if taken without water

How to measure it

$60-120
MarkerLipid panel (total cholesterol, LDL, HDL), fasting glucose, HbA1c
OptimalTotal cholesterol: <200 mg/dL, LDL: <100 mg/dL, Glucose: <100 mg/dL
Deficient belowNot applicable for fiber supplement
FrequencyEvery 3-6 months when using for cholesterol or diabetes management

What people actually reported to the FDA

CAERS, 21 reports naming it as the suspect

Most reported effects

Vomiting 3
Nausea 3
Blood pressure increased 2
Asthenia 2
Brain fog 2
Named as the suspect 21 reports of 27 that mention it at all
Serious outcome 82% hospitalisation, emergency room or worse
Other Serious or Important Medical Event13
Hospitalization5
Other Outcome4

Reports are voluntary and unverified — they record what someone experienced while taking something, not what the compound caused. Counts skew towards products people take a lot of, and a serious outcome is more likely to be reported than a mild one, so these are not rates. How we filter them →

What actually reaches you

The label counts the carrier, your body does not
Absorption Very high 95 of 100 · best absorbed form of this compound
Delivered daily 9500 mg
Cost per 100 mg delivered $0.01 comparative — uses the absorption score, not a measured percentage

Works better with

3 documented
+
Probiotics

Enhanced gut health and microbiome benefits

Psyllium feeds beneficial bacteria supporting probiotic growth · level A
+
Omega 3 Fatty Acids

Enhanced cardiovascular and anti-inflammatory benefits

Complementary heart health effects · level B
+
Chromium

Enhanced blood sugar control

Complementary glucose metabolism effects · level B

What not to take with Psyllium Husk

2 documented
!
Medications Taken Together

May reduce absorption of medications

Fiber can bind drugs and reduce absorption · major significance
!
Insufficient Water

Risk of choking or obstruction

Fiber needs water to form proper gel consistency · critical significance

Medication interactions

Discuss these with a pharmacist before combining
all-medications Moderate

May reduce absorption of any medication

What to do: Take medications 1 hour before or 2-4 hours after psyllium

diabetes-medications Minor

May enhance blood sugar lowering effects

What to do: Monitor blood glucose levels

cholesterol-medications Beneficial

May enhance cholesterol-lowering effects

What to do: May improve drug effectiveness

Available forms

bioavailability compared
Pure Psyllium Husk Powder 95

Pure Psyllium Husk Powder: Multiple benefits, FDA approved claims, Well-researched, Natural

Food sources

before you supplement
Psyllium husk powder Pure fiber supplement · 95
Psyllium seed Lower fiber concentration · 80
Metamucil-type products Variable psyllium content · 90
Not found in common foods Supplementation required · N/A

Too little

deficiency signs
  • Chronic constipation and irregular bowel movements
  • Elevated cholesterol levels
  • Poor blood sugar control
  • Reduced satiety and overeating
  • Poor gut microbiome diversity
  • Increased risk of cardiovascular disease

Too much

toxicity signs
  • Generally safe but potential risks:
  • Choking or esophageal obstruction without adequate water
  • Bowel obstruction in rare cases
  • Initial digestive discomfort and gas
  • Reduced medication absorption if taken together

Who benefits most

digestive-health-constipation

Excellent for promoting regular bowel movements and digestive health

5-10g with 8-16oz water, 1-3 times daily
high-cholesterol

Proven to significantly reduce LDL and total cholesterol

7-15g daily with meals
diabetes-blood-sugar-control

Helps regulate blood glucose and improve glycemic control

5-15g with meals
weight-management

Promotes satiety and may support healthy weight loss

5-10g before meals with water
ibs-digestive-disorders

May help normalize bowel function in IBS

5-10g daily, gradually increased

Where to buy it

compare forms first

Look for Psyllium Husk at 5-15g per serving. The form that matters here is Pure Psyllium Husk Powder.

Find on Amazon

Affiliate link — we may earn a commission at no cost to you.

How it works

  • Forms viscous gel that slows nutrient absorption and promotes satiety
  • Binds bile acids and cholesterol facilitating their elimination
  • Slows glucose absorption improving postprandial glycemic response
  • Increases stool bulk and water content promoting regular bowel movements
  • Fermented by gut bacteria producing beneficial short-chain fatty acids
  • Mechanical action helps cleanse intestinal walls

Key findings

what the evidence supports
  • Strong evidence for cholesterol reduction and heart disease risk
  • Effective for blood sugar control and glycemic management
  • Excellent for digestive health and constipation relief
  • Must be taken with adequate water to prevent choking

Sources: NIH Examine.com · data reviewed 2026-08-02

Compiled by Denis, who maintains this database and holds no medical qualification — every figure here is sourced or derived, never asserted. How we calculate it →

Common questions

What are the benefits of Psyllium Husk?

Documented effects: Improved digestive regularity; Cholesterol reduction; Blood sugar control; Weight management support. Promotes healthy bowel movements and relieves constipation

How much Psyllium Husk should you take per day?

The common daily range is 5-15g. By goal — digestive health: 5-10g daily with water; cholesterol reduction: 7-15g daily with meals; blood sugar control: 5-15g with meals; weight management: 5-10g before meals.

When is the best time to take Psyllium Husk?

With meals and water. First effects are typically reported within 1-3 days for digestive benefits.

What are the side effects of Psyllium Husk?

At excessive doses: Generally safe but potential risks:, Choking or esophageal obstruction without adequate water, Bowel obstruction in rare cases, Initial digestive discomfort and gas, Reduced medication absorption if taken together. Safety rating at normal doses is 8 out of 10.

What should you not take with Psyllium Husk?

Separate it from Medications Taken Together, Insufficient Water by two to four hours. May reduce absorption of medications

Does Psyllium Husk interact with medications?

Documented interactions with all-medications, diabetes-medications, cholesterol-medications. Discuss these with a pharmacist before combining.

How do you know if you need Psyllium Husk?

The marker is Lipid panel (total cholesterol, LDL, HDL), fasting glucose, HbA1c, optimal range Total cholesterol: <200 mg/dL, LDL: <100 mg/dL, Glucose: <100 mg/dL. Common deficiency signs: Chronic constipation and irregular bowel movements, Elevated cholesterol levels, Poor blood sugar control, Reduced satiety and overeating.

Taken for