I tried Mestinon 60 mg/day after getting medical advice and reading some testimonials from the long Covid community. The medication is relatively safe and inexpensive, so it felt worth trying. Unfortunately, I didn’t notice any improvement, but at least there were no side effects.

My hrv improved while I was on it but it was too short of an experience to have other positive effects. I experienced too many side effects so had to stop. Just felt way more tired more malaise and leg cramps

It significantly improved my tachycardia, lightheade­dness upon standing up, hypoglycemia, and cold/heat intolerance. It also really helped my MCAS. It does cause significant bronchial secretions so I always feel like I'm coming down with a chest cold, but I've managed to tune it out.