Instalab

Research & Answers

Physician-backed insights to optimize your health and reduce long-term risks.

Iron Infusion Side Effects Are Common but Almost Never Dangerous, With One Sneaky Exception

Most iron infusion side effects are mild, short-lived, and affect only a small percentage of people. Across large studies tracking tens of thousands of infusions, overall reaction rates land around 2 to 4 percent, and the vast majority of those reactions amount to temporary discomfort: flushing, a little nausea, maybe some itching. True emergencies are extraordinarily rare. But there is one side effect that flies under the radar, and it has nothing to do with allergic reactions. Repeated infusions of a specific formulation can quietly drain your phosphate levels, eventually causing bone pain, weakening, and even fractures. That is worth understanding before your first or fifth infusion.

The NAD Shot Promises Big, but Your Body Clears It Almost Immediately

When healthy adults received a six-hour intravenous NAD+ infusion, their plasma NAD+ was rapidly cleared. What showed up instead were metabolites in the urine, proving the body processed it but offering no tested clinical benefit. That's a significant gap between what NAD shot marketing suggests and what the research actually supports. NAD+ itself is genuinely important. It's central to energy production, redox balance, DNA repair, and the activity of sirtuins (enzymes involved in aging and metabolism). Levels decline with age and in conditions like heart failure and neurodegeneration. The logic of boosting it makes sense on paper. The problem is that the leap from "NAD+ matters" to "injecting it helps you" skips over most of the science.