Extra vitamin C is also helpful. The only side effect you may have are loose stools at higher doses. If this happens decreasing the dose will quickly clear up the symptoms. Vitamin A in large doses may be helpful. 200,000 units twice a day for FIVE days.
Children can take half the dose.
Even though vitamin A is oil soluble this dose is very safe if not taken for long periods. However if you are pregnant you should not use it. Garlic is an excellent natural antibiotic. Kyolic is one of the best brands. You might use six capsules four times a day for several days.