What your chiropractor said is true, especially for stimulants like caffeine, gensing, etc. B12 gives energy as a side-effect of correcting low red blood cell production and certain types of anemia...this is a good way to stimulate energy, as it corrects a deficiency instead of withdrawing energy reserves.
Something else you might want to look in to is energy metabolism - some with CFS/FMS find NADH supplementation helpful because it supports the energy production cycle of the cells (mitochondrial respiratory chain, etc.).
Also, dehydration can cause fatigue, so make sure you are drinking sufficient fluids for your activity and detox level. Good luck,
Chronic Lyme Disease, Gluten & Sulfite Sensitivity, Many Food/Inhalant/Medication/Chemical Allergies & Intolerances, Asthma, Gut issues (dysmotility, non-specific inflammation), UCTD ("Secondary Lupus-Like Syndrome"), Osteoporosis, Pancytopenia, chronic malabsorption/malnutrition, etc.; G Tube; Currently TPN-dependent.
Meds: Zofran, Pulmicort, Heparin (to flush PICC line), IV Ceftazidime (for Pleural Effusion).