The product is generally safe to use, and most people find that it does not cause any serious side effects.
We advise against using it in combination with other supplements containing levels of preformed vitamin A which would exceed the upper tolerable limit of 3,000 mcg.
If you have a medical condition, inform 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 prescription medications or medical condition. We cannot provide any specific medical advice.