Positives

• A long COVID patient experienced a significant reduction in brain fog and body aches after incorporating beef liver capsules into their routine, feeling “like a new man” Reddit.
  
  

Negatives

• Beef liver is one of the richest dietary sources of preformed retinol, and even a few grams of dried powder can push intake past the NIH tolerable upper limit of 3,000 mcg/day; chronic excess can cause headaches, joint pain, liver strain, bone loss, and birth defects in pregnancy. NIH.
• ConsumerLab notes there are no randomized human trials proving freeze-dried beef liver capsules raise testosterone, boost immunity, or improve performance beyond what's available from targeted, evidence-based nutrients; people with hemochromatosis, gout, or vitamin A toxicity should avoid them. ConsumerLab.
• Patients combining beef liver capsules with topical or oral retinoids like isotretinoin or tretinoin can develop additive vitamin A toxicity, with headaches, nausea, and liver strain the most reported issues. Medical News Today.

Hurdles & Side Effects

• One patient mentioned that they initially stopped using supplements, including beef liver capsules, but found themselves returning to them periodically, indicating a challenge in maintaining a consistent regimen Reddit.