There are many options out there for fulvic acid, some better some less.
Few options that i found more effective are :
FulvicXcell: Certificate of analysis for Fulvic acid alone:
Available in bags with 30 x 350mg Stick packs – food-grade.
Price: $50/bag, for purchasing contact us (text ideal). Sale 10% off until 2/3/23
To use: Open a stick and add it to a glass with 8 ounces of pure/distilled water. Enjoy it 2 hours away from any medication.