The product is generally safe to use and people find it does not cause any serious side effects.
The only thing that we do not advise to be used in combination with any other supplements containing levels of preformed vitamin A which would put you above the upper tolerable limit of 3,000 mcg.
If you have a medical condition, tell your doctor or pharmacist about any dietary supplements and medicines you take. They can tell you if those dietary supplements might interact or interfere with your medications or medical condition. We can not provide any specific medical advice.