Doses for chewing vastly exceed doses used for smoking. Low dose codeine is available over the counter at pharmacies but not higher doses. Chlorpyrifos exposure may lead to acute toxicity at higher doses. Paracetamol is generally safe at recommended doses. Tinnitus can also occur due to the discontinuation of therapeutic doses of benzodiazepines. He became calmer through a combination of transcendental meditation and low doses of medication. Acetonitrile has only modest toxicity in small doses. Symptoms among women taking lower doses have been reported. Mumps is preventable by two doses of the mumps vaccine. Additional doses of epinephrine may be required. It is caused by supplementing with high doses of vitamin D rather than sunlight. At high doses liver problems may occur. Retinol at normal doses is well tolerated. These side effects diverge depending on the doses and methods of using testosterone. This may lead to lower therapeutic doses.