Any statement about what an infusion may do for someone has to sit alongside a statement of what it may do to them. The following are recognised complications of intravenous therapy.

• Pain, bruising or bleeding at the insertion site — the most frequent effects, usually minor and short-lived
• Infiltration or extravasation — fluid leaking into surrounding tissue rather than the vein, causing swelling and pain, and in the case of irritant substances, tissue damage
• Phlebitis or thrombophlebitis — inflammation of the vein, which may present as a tender, red, hardened cord along the arm
• Local or bloodstream infection — introduced through the cannula; catheter-related bloodstream infection is uncommon but serious and can be life-threatening
• Allergic reactions, including rare anaphylaxis, to a component of the infusion; iron preparations in particular carry a recognised risk of hypersensitivity reactions
• Fluid overload — of particular concern in heart or kidney disease, potentially causing breathlessness and fluid on the lungs
• Electrolyte disturbance — where added salts push blood levels outside the safe range
• Vitamin toxicity — fat-soluble vitamins, particularly A and D, accumulate in the body rather than being readily excreted, so high or repeated doses can cause harm; high intakes of vitamin C can raise urinary oxalate excretion and may contribute to kidney stones, most clearly in people with pre-existing hyperoxaluria or kidney disease, and haemolysis has been reported after very high-dose intravenous vitamin C in people with G6PD deficiency
• Air embolism and vein damage — rare, but recognised complications of intravenous access

Regulators outside the UAE have raised specific concerns about infusion services operating with inadequate oversight — including compounding of infusions under insanitary conditions and administration by inadequately trained personnel. This is a strong argument for receiving any infusion in a properly licensed medical facility, whatever the marketing around it.