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. 2023 May 12;15(10):2288. doi: 10.3390/nu15102288

Table 5.

Summary of AEs reported in key randomized controlled trials of RYR in subjects with dyslipidemia.

Study Number of Subjects Type of AE n (%)
N (RYR Dose; MK [Lovastatin] Dose) Control RYR Control
Placebo comparator
Heber, 1999 [44] 42 (2.4 g/d; 4.8 mg/d) 41 Serious
Total
0 (0)
1 (2)
0 (0)
3 (7)
 Musculoskeletal chest pain 1 (2) 0 (0)
 Headache 0 (0) 1 (2)
 Pneumonia 0 (0) 1 (2)
 Rash/pruritus/skin allergy 0 (0) 1 (2)
Lin, 2005 [47] 37 (1.2 g/d; 11.4 mg/d) 38 Serious
Breast carcinoma (not related to RYR)
Total
1 (3)
1 (3)
21 (57)
0 (0)

28 (74)
 Increased CPK 1 (3) 0 (0)
 Increased ALT 1 (3) 0 (0)
 Diarrhea 0 (0) 1 (3)
 Nausea 0 (0) 1 (3)
 Leukopenia 0 (0) 1 (3)
 LDH increase 1 (3) 0 (0)
Becker, 2009 [48] a 31 (3.6 g/d; 6 mg/d) 31 Total NR NR
Serious NR NR
 Myalgia 2 (6) 1 (3)
 Loose stools 1 (3) 0 (0)
 Dizziness 1 (3) 0 (0)
Bogsrud, 2010 [49] 22 (4 capsules; 7.2 mg/d) 20 Serious
Total
0 (0)
8 (36)
0 (0)
1 (5)
 Back pain 1 (5) 0 (0)
 Increased CPK 1 (5) 0 (0)
 Diarrhea 2 (9) 0 (0)
 Flatulence 1 (5) 1 (5)
 Crohn’s disease 1 (5) 0 (0)
 General discomfort 1 (5) 0 (0)
 Influenza 1 (5) 0 (0)
Verhoeven, 2013 [51] 31 (2 capsules/day; 10.05 mg/d) 21 Serious
Total
NR
NR
NR
NR
 Muscle stiffness 2 (6) 0 (0)
 Muscle cramps 3 (10) 1 (5)
 Myalgia 4 (13) 2 (10)
 Increased CPK 5 (16) 3 (14)
 Liver pain 0 (0) 1 (5)
 Belches 1 (3) 0 (0)
 Erectile dysfunction 0 (0) 1 (5)
 Insomnia 1 (3) 1 (5)
 Pruritus 0 (0) 1 (5)
Moriarty, 2014 [52] b XZK
(1.2 g/d)
n = 36
XZK
(2.4 g/d)
n = 42
37 Serious
Fracture, extremity (not related to RYR)
Pulmonary embolism (not related to RYR)
Thyroid cancer (not related to RYR)
Total
1.2 g/d
0 (0)
0 (0)
1 (3)
17 (47)
2.4 g/d
1 (2)
1 (2)
0 (0)
22 (52)
PBO
0 (0)
0 (0)
0 (0)
19 (51)
 Musculoskeletal/connective tissue disorders 4 (11) 5 (12) 1 (3)
- Muscle spasm 0 (0) 2 (5) 0 (0)
- Myalgia 1 (3) 2 (5) 0 (0)
- Jaw pain 1 (3) 0 (0) 0 (0)
 Investigations/laboratory abnormalities 2 (6) 1 (2) 6 (16)
- Increased CPK 0 (0) 0 (0) 2 (5)
- Increased ALT 0 (0) 0 (0) 2 (5)
- Increased AST
- Increased leukocyte count
0 (0)
2 (6)
0 (0)
0 (0)
2 (5)
0 (0)
 Gastrointestinal disorders 5 (14) 10 (24) 10 (27)
- Diarrhea 2 (6) 0 (0) 1 (3)
- Dyspepsia 3 (8) 1 (2) 1 (3)
- Nausea 0 (0) 2 (5) 2 (5)
- Abdominal discomfort 0 (0) 0 (0) 2 (5)
- Epigastric pain 1 (3) 0 (0) 0 (0)
 Nervous system disorders 1 (3) 3 (7) 3 (8)
- Headache 1 (3) 2 (5) 2 (5)
 Infections 4 (11) 5 (12) 4 (11)
- URTI 0 (0) 2 (5) 3 (8)
 Rash 1 (3) 0 (0) 0 (0)
 Skin flushing 0 (0) 0 (0) 1 (3)
Wang, 2019 [54] c MK-RYR (400 mg/d; 8 mg/d)
n = 23
GABA-RYR (335 mg/d; NA)
n = 23
23 Serious
Total
Elevated creatinine
Increased ALT
Increased AST
0 (0)
1 (4)
0 (0)
1 (4)
1 (4)
0 (0)
1 (4)
0 (0)
1 (4)
1 (4)
0 (0)
3 (13)
1 (4)
0 (0)
0 (0)
 Poor general health 0 (0) 0 (0) 1 (4)
 Anxiety 1 (4) 0 (0) 0 (0)
 Skin allergy 0 (0) 0 (0) 1 (4)
Minamizuka, 2021 [55] 10 (200 mg/d; 2 mg/d) 8 Serious NR NR
Skin rash 0 (0) 0 (0)
Muscle pain 0 (0) 0 (0)
Total 0 (0) 0 (0)
Statin comparator
Xiaobin, 2007 [62] XZK; NA ATV; NA
n = 130 overall
NA NA
Gheith, 2008 [61] RYR 1.2 g/d for 1 month then 600 mg/d n = 20 FLV 20 mg/d
n = 30 PBO n = 22
NR NR
Liu, 2011 [66] LRRMP (350 mg/d; NA) n = 20; XZK (1.2 g/d; NA) n = 20 LOV 20 mg/d
n = 20
Serious
Total
0 (0)
NA
1 (5) d
NA
Li, 2011 [65] XZK (1.2 g/d; NA) n = 32 LOV 40 mg/d
n = 32
NA NA
Halbert, 2010 [63] RYR (4.8 g/d; 9.96 mg/d) n = 21 PRV 40 mg/d
n = 22
Serious
Total
NR
NR
NR
NR
 Persistent myalgia only
- Generalized 0 (0) 3 (14)
- Local 2 (10) 1 (5)
- Local and generalized 2 (10) 4 (18)
 Persistent and intermittent myalgia
- Generalized 1 (5) 6 (27)
- Local 4 (19) 3 (14)
- Local and generalized 5 (24) 8 (36)
 Muscle weakness 1 (5) 1 (5)
 Abdominal gas, bloating 2 (10) 0 (0)
 Alopecia 2 (10) 0 (0)
 Arthralgia 1 (5) 1 (5)
 Back pain 5 (24) 6 (27)
 Diarrhea 2 (10) 0 (0)
 Dizziness 0 (0) 2 (9)
 Dyspepsia 1 (5) 0
 Fatigue 0 3 (14)
 Fracture, extremity 1 (5) 0
 Headache 2 (10) 2 (9)
 Motor co-ordination decreased, left hand 0 1 (5)
Ruscica, 2014 [59] RYR (200 mg/d; 3 mg/d) n = 30 PRV 10 mg/d
n = 30
Serious
Total
NR
NR
NR
NR
Marazzi, 2017 [60] RYR (200 mg/d; 3 mg/d) n = 50 SMV 10–20 mg/d or ATV 5–10 mg/d or RSV 5 mg/d
n = 50
Serious NR NR
Total NR NR
Musculoskeletal discomfort 3 (6) 3 (6)
Hepatobiliary disorders 0 (0) 0 (0)
Gastrointestinal disorders 2 (4) 1 (2)
Metabolic disorders 0 (0) 0 (0)
Kou, 1997 [56] XZK (1.2 g/d; NA) n = 53 SMV 10 mg/d
n = 55
Severe
Total
NA
NA
NA
NA
Chen, 2002 [57] XZK (1.2 g/d; NA) n = NA e SMV 10 mg/d
n = NA e
Serious
Total
0 (0)
0 (0)
0 (0)
0 (0)
Xue, 2017 [64] RYR (1.2 g/d; NA) n = 27 SMV 20 mg/d
n = 33
Serious
Total
0 (0)
0 (0)
0 (0)
0 (0)
Cui, 2015 [58] XZK 600 mg BID n = 30 SMV 20 mg QD
n = 30
SMV stopped and restarted at 20 mg QD n = 30
NR NR

a AEs leading to study discontinuation; b AEs leading to discontinuations and/or AEs reported in ≥2 subjects; c Report described AEs leading to discontinuation; d One patient dropped out due to transaminase elevation; listed as SAE here; e Total number of patients in study = 65. AE = adverse event; ALT = alanine aminotransferase; AST = aspartate aminotransferase; ATV = atorvastatin; BID = twice daily; CPK = creatine phosphokinase; FLV = fluvastatin; GABA = gamma-aminobutyric acid-rich RYR; LDH = lactate dehydrogenase; LRRMP = lipid-reducing red rice minute powder; LOV = lovastatin; MK = monacolin K; NA = not available; NR = not reported; QD = once daily; PRV = pravastatin; RSV = rosuvastatin; RYR = red yeast rice; SAE = serious adverse event; SMV = simvastatin; URTI = upper respiratory tract infection; XZK = Xuezhikang.