No serious toxicity associated with the use of coenzyme Q10 has been reported. Reviewed in [1,2,3,4]Doses of 100 mg/day or higher have caused mild insomnia in some individuals. Reviewed in Liverenzyme elevation has been detected in patients taking doses of 300 mg/day for extended periods of time, but no liver toxicity has been reported. Reviewed in  Researchers in one cardiovascularstudy reported that coenzyme Q10 caused rashes, nausea, and epigastric (upper abdominal) pain that required...
The side effects of the medication keep the patient from taking the dosage needed to control the depression.
The symptoms are interfering with the patient's ability to continue medical treatment.
Antidepressants are usually effective in the treatment of depression and its symptoms. Unfortunately, antidepressants are not prescribed often for patients with cancer. About 25% of all patients are depressed, but only about 16% receive medication for the depression. The choice of antidepressant depends on the patient's symptoms, potential side effects of the antidepressant, and the person's individual medical problems and previous response to antidepressant drugs.
The FDA has also directed manufacturers of all antidepressant drugs to change the labeling for their products to include a boxed warning and more detailed warning statements about increased risk of suicidal thinking and behavior in children and adolescents being treated with antidepressants. Some studies show that the benefits of proper antidepressant use in children and adolescents, including careful monitoring for suicidal behavior, may outweigh the risks. However, for children younger than 12 years with major depression, only fluoxetine (Prozac) showed benefit compared to a placebo.
Patients with cancer may be treated with a number of drugs throughout their care. Some drugs do not mix safely with certain other drugs, foods, herbals, and nutritional supplements. Certain combinations may reduce or change how drugs work or cause life-threatening side effects. It is important that the patient's healthcare providers be told about all the drugs, herbals, and nutritional supplements the patient is taking, including drugs taken in patches on the skin. This can help prevent unwanted reactions.
St. John's wort (Hypericum perforatum) has been used as an over-the-countersupplement to treat depression. Many studies have been done to compare St. John's wort with antidepressants, placebo (inactive) drugs, or both, and have shown mixed results. An overview of 37 randomized, controlled clinical trials in patients with depression showed that St. John's wort does not have a strong effect on major depression, but may have a slight effect on mild depression.