| Name | Info | Provider | Link |
|---|---|---|---|
| subscription/membership/fee required | Elsevier Science | https://linkinghub.elsevier.com/retrieve/pii/S0039-128X(21)00101-X | |
| Dietary Supplements | free resource | MedlinePlus Health Information | https://medlineplus.gov/dietarysupplements.html |
| subscription/membership/fee required | Ovid Technologies, Inc. | http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=34246664.ui |