Dear Sir, 

Check these research articles

http://www.ncbi.nlm.nih.gov/pubmed/22321195

http://www.ajog.org/article/S0002-9378(13)01104-6/abstract

http://www.ajog.org/article/S0002-9378(12)01792-9/abstract

http://www.ajog.org/article/S0002-9378(11)01531-6/abstract

Hope this helps 

Resveratrol during pregnancy may cause abnormalities in the fetus, according to a new study done in primates called Japanese macaques. Although the study was conducted on animals, the researchers recommend that pregnant women should refrain from taking supplement of resveratrol

Another research from Oregon Health & Science University and the University of Colorado-Denver suggests that taking such supplements during pregnancy may cause pancreatic problems for the fetus.

http://www.livescience.com/46261-resveratrol-supplements-harm-fetus-primate.html

This link helps....

Check for these article also 

http://www.ncbi.nlm.nih.gov/pubmed/24563374

http://onlinelibrary.wiley.com/doi/10.1113/JP271543/full

Thanks a lot Mr.Ramkumar and Mr. Abdulkarim !

All other animal studies show that Resveratrol is safe in pregnancy. USFDA classifies it as GRAS even in Pregnancy (small doses from dietary sources). This study in macaques is a bit disturbing, even though consequences of increased pancreatic mass are not clear. 

Many other authors imply that it is a nutritional anti inflammatory and antioxidant, and therefore imply that it is safe. IUGR could be the only indication during pregnancy , where it's use may be warranted. 

Just in case, if you come across any human trials in pregnancy please inform me.

Deeply appreciate your interest in this subject !

Warm regards 

I think it is important to point out that there are no standards for supplements. Therefore, when you buy and take a supplement, there is no way of knowing what is actually in the pill.  So, as in the case of all supplements, there is no way of knowing if it has any resveratrol in it at all, and if yes, how much and if not, then what is in the  pill.  Therefore, in the case of Resveratrol, which are available in food such as red grapes and blueberries, it would be optimal to get what you need from food sources.   

I think the best and quickest pregnancy nutritional advice, without taking a 3 hour individualized session, is one cup of chopped parseley per day of pregnancy and fish 3 times per week

Thank you !

Please take a look at this useful RG link.

Article Maternal resveratrol consumption and its programming effects...

Thank you very much.

You may take a look at this link:

https://www.medicalnewstoday.com/articles/277738.php

Thank you very much. I had come across the study about increased pancreatic mass in macaques. Since Resveratrol activates Sirtuins, the change is likely to be as per our genetic design.

Would the increased pancreatic mass result in better digestion and almost no diabetes ? So far this possibility has not been studied.

Jian Ding et al, Endocrine Connections 2017, (6) had found it safe and effective (after 20 weeks of gestation) for co-prescription with Nifedipine.

No. Please see the following RG link.

Article Preconception resveratrol intake against infertility: Friend or foe?

in vitro findings on the sensitivity of human fetal adrenal steroidogenesis to resveratrol at GW9-12 suggest that intake of this polyphenol at high doses by women who are at early stages of pregnancy is undesirable.

Resveratrol Supplements May Harm Fetus, Primate Study Suggests.

https://www.livescience.com/46261-resveratrol-supplements-harm-fetus-primate.html

results demonstrate that resveratrol use during pregnancy yields improvements in maternal and placental phenotype with beneficial effects in the fetal liver but an unexplained and concerning alteration in fetal pancreatic development, which strongly cautions against the use of resveratrol by pregnant women

Resveratrol does not appear to have side effects at short-term doses (1.0 g). Otherwise, at doses of 2.5 g or more per day, side effects may occurs, like nausea, vomiting, diarrhea and liver dysfunction in patients with non-alcoholic fatty liver disease

Since resveratrol is hailed for numerous benefits to health, it is no wonder supplements of the compound are popular. But new research from Oregon Health & Science University and the University of Colorado-Denver suggests that taking such supplements during pregnancy may cause pancreatic problems for the fetus. https://www.google.com/amp/s/www.medicalnewstoday.com/amp/articles/277738

Pregnant women ‘should not take resveratrol supplements’ https://www.google.com/amp/s/www.medicalnewstoday.com/amp/articles/277738

Check https://lipidworld.biomedcentral.com/articles/10.1186/s12944-020-01349-w

Hello, please find this paper which shows resveratrol having benefits during pregnancy.

Article Maternal resveratrol consumption and its programming effects...