PrimeShred is a formula that helps to reduce weight. But like other supplements, PrimeShred also has side effects in moderation but only when you exceed the dose or is intolerant to some ingredient present in it. These after-effects are generally temporary and mild. The after-effects include dizziness, vomiting, fatigue, and nausea. You should consult with your physician before consuming any supplements or PrimeShred if you have liver disease, heart disease, diabetes, high blood pressure, or other health issues.