Uncommon reported side effects (experienced in more than 1 in 1,000 but less than 1 in 100 patients) • Systemic allergic reactions Generalised allergy to insulin. Associated symptoms may include large-scale skin reactions (rash and itching all over the body), severe swelling of skin or mucous membranes (angiooedema), shortness of breath, a fall in blood pressure with rapid heart beat and sweating.