Positives

• Bright light therapy is most relevant as a circadian tool: people usually try a morning light box for delayed sleep timing, seasonal low mood, or more consistent waking rather than for broad Long COVID recovery. Reddit.

Negatives

• People with post-COVID light sensitivity, afterimages, or migraine-like visual symptoms may need extra caution, because bright light can feel very different when the nervous system is already overstimulated. Reddit.

Hurdles & Side Effects

• The Verilux HappyLight 10K Lux runs ~$60 and patients commonly feel more energized after about a week of daily use, while the larger Northern Light Technologies BOXelite (~$175) and Carex Day-Light Classic Plus are positioned as upgrade picks Reviewed.com.
• Patients on 10,000-lux therapy commonly report side effects (headaches and eye strain are most common), and patient resources warn to stop and call a doctor if irritability or feeling “too high” appears PubMed.