Table 1 List of samples collected

From: Quality and Authenticity of Metformin Tablets Circulating on Japanese Websites

Sample No Site No Stated product name Dose
(mg)/number of pills
Packaging and language Labeled manufacturing and/or distributing country Shipping country Package insert and language Authenticity
1 1 GLYCIPHAGE 500/60 PTP/English India Singapore None Unknown
2 2 ZOMET 500/100 Box/English India Singapore None Unknown
3 3 GLYCOMET 500/100 PTP/English India Singapore None Unknown
4 4 GLUCOPHAGE 500/100 APCFP/English Unknown Thailand None Unknown
5 Metformin 500/56 Box/English United Kingdom Singapore Yes/English Unknown
6 APO-Metformin 500 500/100 Box/English Unknown Singapore None Genuine
7 5 APO-Metformin 500 500/100 Box/English United Kingdom Singapore None Genuine
8 6 APO-Metformin 500 500/100 Box/English Unknown Singapore None Genuine
9 7 Metformin 500/100 Bottle/English India America Yes/English Unknown
10 8 Metformin 500/56 Box/English United Kingdom Singapore Yes/English Unknown
11 9 Metformin‐GPO 500/100 APCFP/English Thailand Thailand Yes/English Unknown
12 Siamformet 500/100 Box/English and Thai Thailand Thailand Yes/Thai Unknown
13 10 Metformin 500/112 Box/English United Kingdom Singapore Yes/English Unknown
14 APO-Metformin 500 500/100 Box/English United Kingdom Singapore None Genuine
15 ZOMET 500/100 Box/English India Singapore None Unknown
16 11 ZOMET 500/100 Box/English India Singapore None Unknown
17 12 GLYCIPHAGE 500/60 PTP/English India Singapore/Hong Kong None Unknown
18 13 Glucophage 500/200 PTP/Chinese France Taiwan Yes/Chinese Unknown
19 14 Okamet-500 500/200 PTP/English India India None Genuine
20 15 GLYCOMET 500/100 Box/English India Singapore None Unknown
21 16 METCHEK 500/1000 Bottle/English New Zealand Hong Kong None Unknown
22 GLYCIPHAGE 500/60 PTP/English India Hong Kong None Unknown
23 17 Glucophage 500/280 PTP/English Unknown Malaysia None Unknown
24 Metformin HCl BP 500 500/250 PTP/English Unknown Malaysia None Unknown
25 18 GLUCOPHAGE 500/60 APCFP/English Unknown Thailand None Unknown
26 19 APO-Metformin 500 500/100 Box/English Unknown Singapore None Genuine
27 Metformin 500/56 Box/English United Kingdom Singapore Yes/English Unknown
28 ZOMET 500/100 Box/English India Singapore None Unknown
29 20 GLYCIPHAGE 500/60 PTP/English India Hong Kong None Unknown
30 21 Metformin 500/100 PTP/English Unknown Thailand None Unknown
31 22 Glucophage 500/100 APCFP/English Unknown Thailand None Unknown
32 23 メトホルミン塩酸塩錠500 mg (English translation: Metformin Hydrochloride 500 mg) 500/50 PTP/Japanese Japan Singapore Yes/Japanese Genuine
33 24 Metformin Hydrochloride Tablets USP 500/100 Bottle/English India America Yes/English Unknown
34 7 Metformin Hydrochloride Extended-Release Tablets, USP 500/60 Bottle/English Canada America None Unknown
35 3 GLYCIPHAGE 500/60 Bottle/English India India None Unknown
36 Metformin Hydrochloride Extended-Release Tablets, USP 1,000/60 Bottle/English India India None Unknown
37 17 Glucophage 500/60 Box/English France Malaysia Yes/English Unknown
38 24 Metformin Hydrochloride Extended-Release Table, USP 750/100 Bottle/English India America Yes/English Unknown
39 Metformin Hydrochloride Extended-Release Table, USP 500/100 Bottle/English India America Yes/English Unknown
40 15 Metsmall 500/100 Box/English India Singapore None Unknown
  1. PTP press-through package, APCFP aluminum-plastic composite film package