Besides Similasan ear drop products, which sometimes cause irritation or burning in the ear, other Similasan products do not have known side effects. An increase in symptoms may initially occur after taking the products, states Similasan.
Similasan products contain 100 percent natural active ingredients that work by stimulating the body's immune system to promote healing, explains Similasan. Many types of products are available, including ear drops, eye drops, nasal sprays, and cold and cough formulas. Similasan also offers products to relieve stress, anxiety, tension and sleeplessness. Most products are designed to provide temporary symptom relief and are not intended to cure medical conditions.