Proof.Fit

Blood sugar

76 supplements analyzed and ranked by clinical evidence.

Supplements76

Supplement Evidence

Main Effects
Fiber

HbA1c ↓, 0.5%

Postmeal glucose ↓

Insulin resistance ↓

Strong
364513
Alanine

Alanine↓ glucose↓

Alanine↑ glucose↑

Ketosis shifts alanine

Strong
302818
Potassium

K↓, glucose↓

insulin sensitivity↑, glucose↓

Strong
319717
Inositol

↓ HOMA-IR, glucose

↓ HbA1c, FPG

↓ insulin, +sensitivity

Strong
27017
Magnesium

Lower glucose, better sensitivity

Higher glucose, worse sensitivity

Strong
183419
Chromium

Blood sugar ↓

Insulin sensitivity ↑

Strong
43411
Berberine

Lower glucose/HbA1c

Lower insulin resistance

Strong
9916
Inulin

Lower glucose/HbA1c

Better insulin resistance

Lower post-meal spikes

Strong
29112
Mulberry

Post-meal glucose ↓

FPG/HbA1c ↓

Strong
4912
Cinnamon

Lower fasting glucose

HbA1c -0.83%

Strong
6114
L-Carnitine

Lower glucose/insulin

Restored flexibility

+24% carnitine

Strong
46519
Carnitine

Lower glucose, HOMA‑IR

+ glucose disposal

Strong
47518
Butyrate

Butyrate↑ glucose↓

AUC−36 mg/dL

Strong
251515
Resveratrol

Lower glucose, HOMA-IR

−0.5 mmol/L FPG

Post-meal glucose, insulin

Moderate
17619
Turmeric

Lower glucose/HbA1c

Improve insulin resistance

Moderate
19419
Anthocyanins

Glucose↓ insulin↓

HbA1c↓ FPG↓

Post-meal glucose↓ insulin↓

Moderate
13119
Ginseng

PPG ↓ 18-39%

Insulin sens ↑; HbA1c ↓

FBG/2h glucose ↓

Moderate
27118
Leucine

↑ insulin, ↓ glucose

↓ insulin resistance

Moderate
39217
Chlorogenic Acid

Lower fasting glucose −27%

Better post‑meal glucose, insulin

Moderate
4616
Vitamin B1

↓ fasting/2h glucose

↔/↑ thiamine status

Moderate
26717
Akkermansia muciniphila

A1c↓ glucose↓

Akkermansia↑ endotoxin↓

Moderate
3614
Psyllium

Postmeal glucose ↓14-31%

Fasting glucose/HbA1c ↓

Postmeal insulin ↓12-36%

Moderate
9712
Piperine

Fasting glucose ↓ ~9-12

HbA1c ↓ ~0.3-0.8%

Moderate
5118
Epigallocatechin Gallate

Glucose ↓; insulin ↓1.43

Postmeal glucose ↓; insulin ↑

Moderate
10919
Flaxseed Oil

Insulin ↓, HOMA-IR ↓

Glucose ↓11.8 mg/dL

HbA1c ↓0.9%

Moderate
11617
Salacia Reticulata

Post-meal glucose ↓

HbA1c/FBS ↓

Moderate
1110
Barley Grass

Lower post-meal glucose

↓ glucose/insulin peaks

More fermentation, lower HGP

Moderate
5915
Vitamin B6

Blood sugar ↓

HbA1c/FPG ↓

Moderate
54417
Bitter Melon

Lower fasting glucose

HbA1c -1.15%

Moderate
107
Vitamin B3

Early insulin +100%

Glucose iAUC -61%

Diabetes incidence -41%

Moderate
55916
Isoleucine

↓ glucose AUC

↑ insulin/GLP-1

−14% glucose AUC

Moderate
8613
Bergamot

Lower blood sugar

~ modest decrease

Moderate
3515
Garlic

↓ Blood sugar

↓ Blood sugar -3.1%

↓ Blood sugar

Moderate
15317
Coptis

Lower blood sugar

HbA1c -0.75%

Improved insulin sensitivity

Moderate
913
Conjugated Linoleic Acid

Glucose/insulin ↓

+27% ISI

HbA1c −0.5%

Moderate
11014
Fenugreek

↓ FPG, HbA1c

↓ PPG, GI

Moderate
3213
Hesperidin

↓ FPG/HbA1c

↓ HOMA-IR / MG

Moderate
6416
Milk Thistle

Lower FPG/HbA1c (~20%, ~12%)

Lower FBS, insulin dose

Improved insulin resistance

Moderate
5114
Creatine

Glucose↓, HOMA↓

HbA1c−1.1%

Moderate
191214
Pine Bark Extract

Glucose control −24 mg/dL

HbA1c −0.8%

Postprandial glucose −14%

Moderate
5318
Avocado

↓ glucose spikes

↓ insulin response

Moderate
4716
Pea Protein

Glucose ↓57%

Glucose ↓37%

Moderate
4514
Quercetin

Postmeal glucose ↓

Insulin timing ↑

HOMA-IR ↓ 21%

Moderate
14219
White Kidney Bean

Blood sugar: GI −34%

Blood sugar: post‑meal glucose −16%

Moderate
510
Sulforaphane

↓ insulin resistance

↓ fasting glucose −0.2 mmol/L

↑ GLP-1, SCFAs

Moderate
4214
Bilberry

↓ post-meal glucose

↓ fasting/HbA1c glucose

↓ insulin spikes

Moderate
278
Astragalus

Blood sugar ↓

Blood sugar ↓ +1.25

Blood sugar ↔ HbA1c

Moderate
14917
Yacon

Lower fasting glucose

Lower post-meal insulin

Weak
44
Taurine

Lower fasting glucose, HbA1c

Lower insulin resistance ~30%

Higher GLP-1, lower glucose

Weak
24013
Glucomannan

HbA1c, glucose ↓

Postmeal glucose/insulin ↓

Gut diversity ↑

Weak
3212
Allulose

Glucose ↓; insulin ↓

-8% post-meal glucose

Weak
54
Olive Leaf Extract

Insulin sensitivity +15%

Glucose, insulin AUC ↓

Weak
1713
Nettle

Fasting/post-meal sugar, HbA1c ↓

FBG −27 mg/dL, HbA1c −1.49%

Weak
375
Gamma Oryzanol

Fasting glucose ↓; HbA1c −0.7%

Metabolic markers ↓; LDL ↓

Weak
148
Dihydromyricetin

Lower fasting glucose

Improved insulin resistance

Weak
25
Artichoke Extract

Lower fasting glucose, HOMA (-11.7%)

Lower HbA1c, insulin resistance

Weak
2513
Benfotiamine

Less sugar damage

↓AGEs; −2.45 CRP

Weak
209
Chitosan

Lower post-meal glucose

~10 mg/dL AUC↓

Weak
11618
Erythritol

No glucose rise

-lower postmeal glucose

Weak
363
Fucoxanthin

↓ HOMA-IR, ALT

↓ HOMA-IR, insulin

Weak
512
Myricetin

Fasting glucose -27%

Postprandial glucose -20%

Early insulin -33%

Weak
49
Gymnema Sylvestre

Glucose -1.3 mmol/L

HbA1c -0.4%

Insulin sensitivity +33%

Weak
106
Amla

Lower fasting glucose

Lower post-load glucose

Weak
2913
Chia Seeds

Lower post-meal glucose

HbA1c -0.27%

Weak
118
Kudzu

BMI, visceral fat ↓

Subcutaneous fat no change

Weak
1911
Schisandra

Lower fasting/postprandial glucose

−LDL, −insulin AUC

Weak
1214
Agaricus Blazei

↓ insulin resistance (HOMA-IR)

↑ adiponectin (+20%)

Weak
78
Fisetin

Asprosin↓, MCP-1↓

Adiponectin↑, stronger with training

Weak
44
Jiaogulan

Glucose ↓ HbA1c −2.0

HOMA-IR ↓; BMI ↓

Weak
88
Celery Seed

FBS -10.57 mg/dL

Lower blood sugar

Weak
86
Capsaicin

Post-meal glucose↓

Insulin AUC↓

Weak
24618
Vanadium

Lower glucose; better insulin sensitivity

↓ glucose AUC

Weak
116
Hemp Protein

Lower post-meal glucose

40g dose effect

Weak
306
Chicory Root

Butyrate +17.4%

Insulin sensitivity ↑

Triglycerides ↓

Weak
89
Vitamin B7

Triglycerides/VLDL ↓

Carboxylase markers ↑

Weak
7310
Coleus Forskohlii

↓ insulin, −36.5%

↓ HOMA-IR, −0.8

Weak
22