1 It may cause rashes in hypersensitive people.  Iodine contrast can also cause an allergic reaction. Itâs an X-ray radiocontrast agent used for intravenous injections. Contrast dyes containing iodine have been responsible for severe allergy reactions (including deaths) in a limited number of hypersensitive people.
Do not resume a rigorous workout, because of the risk of further injury to the sore muscles. Massage is another way to reduce soreness. Massaging the muscles and promoting proper muscle relaxation will help keep muscle contractions down to a minimum.
This type of muscle soreness begins 24 to 48 hours after your workout and actually indicates a natural adaptive process that the body uses after an intense exercise session. When you do a new or particularly challenging workout, your muscle fibers tear on a microscopic level. It takes time for your body to repair that muscle, which is why you may feel this type of lingering soreness for up to 72 hours after that hard workout.