Positives

• Quality greens powders provide concentrated micronutrients, polyphenols, and prebiotics in a single daily serving — useful for Long COVID and ME/CFS patients with food aversion, gastroparesis, or limited appetite who can’t reliably eat 5-9 servings of vegetables daily Healthline.
  
  
• Many products combine spirulina, chlorella, wheatgrass, and mushroom powders with probiotics and digestive enzymes, providing a low-prep option for nutrient repletion alongside conventional therapies Amazing Grass.
  
  

Negatives

• Patients on AG1 commonly report nausea, bloating and diarrhea in the first 1-2 weeks, and some never adapt because of the high inulin and probiotic load Healthline.
• There is no robust independent research showing AG1 closes nutrient gaps better than a basic multivitamin, and patients paying ~$100/month often see no change in energy or fatigue The Real Food Dietitians.

Hurdles & Side Effects

• Quality powders cost $40-$100/month; cheaper products often contain mostly fillers (rice flour, fiber blends) with token amounts of advertised greens, so checking the supplement-facts panel for actual milligrams of key ingredients matters Top Nutrition Coaching.