(Wine-Searcher) - Most wine producers "will not cope" with the cost of providing nutritional labels, opponents argue.

Do you know how many calories are in that glass of wine you're drinking? It could soon be hard to ignore, if consumer advocates in Europe have their way.

The European Parliament took a first step last month when it called on the European Commission to draw up legislation requiring nutritional labeling on alcoholic drinks by 2016.

If it proceeds, the label on your bottle of Chardonnay could soon be warning you that the glass of wine you're about to imbibe will increase your nutritional intake by 123 calories (United States Department of Agriculture figures, based on 5 fl oz glass).

The resolution – adopted by 63 of the 68 members of the parliament's health committee – also calls for labels that highlight the dangers of alcohol for pregnant women and motorists.

The CEEV, the European Committee of Wine Businesses, which represents the EU wine industry, has warned it could put some wineries out of business: "Imposing nutritional labeling would lead to enormous additional costs for the winegrowing sector, costs with which most wine producers will not cope," it said.

"As an agricultural product, wine changes from one year to the next depending on the characteristics of the harvest," it said.

In spite of "a north-south divide on the question and the sensitivities of French, Spanish and Italian winegrowers," it might be adopted this time, a parliamentary source said.

The British MEP behind the legislation, Glenis Willmott, steered the proposal through the committee after a first attempt failed in 2011; she blamed heavy lobbying from the drinks industry for the 2011 result.

This time around, Willmott wants to make sure there is no mistake and that consumers get the information they need. "Consumers have a right to know that a glass of wine has the same number of calories as a slice of cake and that drinking while pregnant can harm your baby," she said.

The committee's non-binding resolution is due to be voted on by the full parliament at the end of April.