There are many options out there for fulvic acid, some better some less good.
After trying many brands this is the one that I found more effective:
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 at the phone number listed on the top is ideal). Sale 10% off until 4/3/23
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.
Coming soon: bags with fulvic/humic acid blend 50/50.