Resveratrol side effects have not been found to be adverse in most cases and those cases are mostly anecdotal. This means that the majority of side effects are noted from people’s personal experience. Resveratrol has many health benefits including the treatment of cancer and cholesterol and increasing longevity. Resveratrol is a compound found in grape leaves, grape seeds, red wine and hu zhang, a Chinese medicinal herb. Actually, there is more resveratrol in grape leaves than the seeds itself. The side effects listed below will help you decide if this “miracle nutrient” is right for you.
- Stomach Cramps and Diarrhea. Resveratrol may cause diarrhea and stomach cramps for some. This is specifically noted with lower quality supplements. Make sure to look for a high quality supplement with 50 percent or more of resveratrol. Even though it has this side effect, the benefits outweigh the problems in most cases.
- Insomnia. Some people reported insomnia problems when they first started taking resveratrol supplements. In most cases, the insomnia subsided after a short period of use. The case studies showed that you have to take more than five grams in a single dose to see any adverse results.
- Appetite Reduction. Resveratrol is good for everything from the top of your head to the bottom of your feet including weight loss, eye problems and circulation. If appetite reduction is not a resveratrol side effect you care to enjoy, then consider not taking this supplement. Many consider appetite reduction a positive side effect though.
- Nervousness or Jittery Feeling. Some have reportedly told of nervousness and jittery feelings immediately after taking the supplement. Others have reported feeling numbness, but these side effects from resveratrol seem to last for a short time only. For others, resveratrol brings lasting results for circulation, sciatica and disc problems.
- Increased Blood Pressure. Resveratrol may increase your blood pressure so it is recommended that you check your blood pressure to see if this is the case. Occasionally, it has been reported that the blood pressure increase has been on the high range.
- Skin Rash. As with all supplements, you may experience rash or allergy. It is best to start out slow and gradually increase your dosage. Although leg rashes are rare, there may be a slight resveratrol side effect to be concerned with.
- Joint, Arthritis or Tendinitis Pain. One of the most noted side effects reported was increased pain in the joints and in the tendons. These pains seem to appear with the dosage of two grams or more. Resveratrol has few side effects when taking the minimum suggested dose. People have experienced more side effects with larger therapeutic dosages.
- Drug Interaction. People who take anticoagulants and antiplatelet drugs should avoid resveratrol due to the fact of increased risk of bleeding. You should also avoid resveratrol if taking NSAIDs and drugs metabolized by Cytochrome P450 3A4. Although there is no proof of it being toxic to humans, we suggest that you avoid those drugs if you are taking high doses of resveratrol.
- If Pregnant, Avoid. Almost all supplements and medications alike recommend that pregnant women should check with their doctor before consuming their product. Resveratrol is the same. There is no concrete study that it is dangerous, but to be on the safe side, avoid any type of red wine, supplement or source of resveratrol when pregnant.