DMG supplements are available from a wide range of suppliers including health food stores, chemists and pharmacies, professional health care providers and online stores.
The quality of DMG supplements varies enormously depending on the supplier, the supplement, the ingredients and manufacturing process.
Dimethylglycine is sold as a foodstuff without a prescription in chemists and health food stores. Therefore some providers will have no professional credentials or qualifications.
If you are contemplating taking DMG supplements, you should seek advice from a paediatrician, GP or dietitian. The British Dietetic Association has information about qualified dietitians in the UK.