(Reuters) — Bayer A.G. cut its earnings forecast on Wednesday due to delays to its $63 billion takeover of Monsanto Co., and said sales of its consumer care products fell, hitting its shares, already reeling from a legal battle over the weed killer Roundup.

The weaker earnings forecast adds to a number of challenges facing the German drugmaker as it braces for years of legal wrangling over the alleged cancer risks of glyphosate-based weedkillers.

Bayer said the number of plaintiffs seeking damages over Monsanto's Roundup and Ranger Pro herbicides had risen to 8,700 from 8,000 from last month, and said that it expected more to sue. It has vowed to defend itself in court, citing regulators and studies as saying the products are safe.

The inventor of aspirin and the maker of Yasmin birth control pills is struggling to stem falling sales at its consumer health arm as U.S. consumers switch from drugstores to online shops, and it faces increasing pressure to strengthen its pharmaceutical division after a string of setbacks.

The company lowered its forecast for adjusted core earnings per share for the year to €5.70-€5.90, down from €6.64 in 2017, short of analyst expectations, dragging the stock down as much as 3.7% in morning trade.

The share drop leads to a loss of about 16% since a U.S. jury's verdict on Aug. 10 for Monsanto to pay close to $300 million in damages in the first of thousands of lawsuits over alleged links between the Roundup weedkiller and cancer.

Second-quarter earnings before interest, tax, depreciation and amortization (EBITDA), adjusted for one-off items, rose to $2.71 billion, the company said Wednesday, slightly below an average estimate in a Reuters poll of analysts.

The company blamed delays to the closure of its mammoth acquisition of Monsanto, which meant it missed out on a typically stronger first half than the second for the seeds maker it agreed to buy in 2016.

"It is clear that analysts have not appreciated the extent of this phasing deviation," said analyst Alistair Campbell of brokerage Berenberg, Gossler & Co. K.G. "Nevertheless, this will disappoint."

The addition of Monsanto will make Bayer as reliant on farming supplies as on pharmaceuticals for earnings. It is in the midst of an overhaul of its drug research and development activities that could result in job cuts as it faces calls to beef up its development pipeline.

Quarterly adjusted EBITDA at the enlarged Crop Science division, now the world's largest supplier of seeds and pesticides, almost doubled.

But its consumer health business, which makes Claritin against allergies, Coppertone sun screen and Dr. Scholl's foot care products, saw earnings fall by 18.5% as a weak U.S. dollar weighed on the value of overseas sales and as customers continued to shop elsewhere for cheaper products.

Mr. Campbell said the "division remains highly problematic."

Bayer said it would still pay out a dividend per share for 2018 that was at least at the year-earlier level, more than its dividend payout policy of 30% to 40% of core earnings per share would command.