Liver damage is the main side effect of taking too much acetaminophen, the active ingredient in Tylenol, with symptoms that include sweating, nausea, severe stomach pain and vomiting, explains Drugwatch. As symptoms of a... More »

www.reference.com Health Medications & Vitamins Side Effects

According to the National Institutes of Health Office of Dietary Supplements, side effects from ingesting excess calcium in the form of dietary supplements or antacid tablets include hypercalcemia (an elevated calcium le... More »

Common side effects of taking too much aspirin at one time include nausea, upset stomach, stomach pain and vomiting, MedlinePlus says. Larger overdoses can also cause hyperactivity, drowsiness, seizures, ringing in the e... More »

www.reference.com Health Medications & Vitamins Side Effects

Mild side effects of spirulina such as stomach pain, nausea and vomiting may subside over time, but severe side effects such as liver damage can be irreversible, explains WebMD. Spirulina products contaminated with micro... More »

www.reference.com Health Medications & Vitamins Side Effects

Common side effects of Tylenol in the elderly are similar to the side effects in the general population and can include coughing, nausea, dizziness and shortness of breath. Less common side effects include black stool, s... More »

www.reference.com Health Medications & Vitamins Side Effects

Excessive iron consumption can cause stomach pain and upset, nausea, diarrhea, constipation and vomiting, according to WebMD. Though iron is an important supplement, too much of it can be dangerous. More »

www.reference.com Health Medications & Vitamins Side Effects

Common side effects of taking too much aspirin at one time include nausea, upset stomach, stomach pain and vomiting, MedlinePlus says. Larger overdoses can also cause hyperactivity, drowsiness, seizures, ringing in the e... More »

www.reference.com Health Medications & Vitamins Side Effects