NEW YORK (Reuters Health) - Herbal supplements aimed at improving men's sexual abilities often contain the active ingredients in erectile dysfunction pills such as Viagra, according to a new study.

Additionally, researchers found that some of these over-the-counter herbal remedies contained more of the ingredient than is allowed in prescription-only pharmaceuticals.

"It's pretty scary stuff," said Neil Campbell, the lead author of the study and a researcher at Pfizer, which sells Viagra. "These products are not herbal at all, they're adulterated."

The U.S. Food and Drug Administration, which is in charge of regulating herbal supplements, posted 11 warnings to consumers in 2013 alerting them of unlabeled pharmaceuticals being found in these products.

Campbell and his colleagues analyzed 91 samples from 58 products.

They sent undercover consumers into convenience stores and gas stations in the Atlanta and Baltimore areas, and bought products such as Rize 2 The Occasion, Stiff 4 Hours, and Man King.

Although 57 of the products claimed to be "all natural," 81 percent of them contained the tadalafil or sildenafil (marketed as Cialis and Viagra, respectively) or similar ingredients that are not approved by the FDA.

The products also had labeling problems, indicating poor quality production, according to the authors. In some cases, expiration dates or lot numbers were missing, manufacturers could not be identified, or samples of the same product had different appearances.

"There's so little effort to do something the right way to produce a legitimate product," Campbell told Reuters Health. "This is an all time low."

None of 10 supplement companies contacted by Reuters Health responded to a request for comment, nor did the FDA.

Campbell said given the potential side effects and health risks associated with prescription erectile dysfunction drugs, men are "risking their lives" taking herbal sex enhancement drugs.

"Almost one patient a day says they've tried Mojo or one of these over-the-counter products," said Dr. Gregory Lowe, an assistant professor of urology at Ohio State University who was not part of this study.

"One of the big concerns is that we don't know what the patient's getting," he added.

Seven samples that Campbell's group analyzed contained only unknown substances.

"Commonly, I hear patients say, 'it worked one time and it didn't work other times.' And that fits in well with what they found here" that quality control is lacking, he added.

It's unclear where the ingredients are coming from.

Lowe advises men who are interested in taking these pills to talk to their doctors first.

He says patients often turn to these products because they are cheap - costing between $2.99 and $17.99, according to Campbell's study, published in the Journal of Sexual Medicine.

But they are taking a health risk in doing so.

Erectile dysfunction medicines can be unsafe for men taking nitrates for chest pain, but only 14 of the samples in the study included a warning against combining the drugs.

"Unfortunately, to an unwitting patient they think they're taking an herbal product," said Campbell. "It really poses a really scary threat for patient health and safety."

SOURCE: http://bit.ly/17KGjiu Journal of Sexual Medicine, online May 1, 2013.

Pacific Crest analyst James Faucette, who has a underperform rating on the company's stock, said he believes initial shipment and sales volumes for the BlackBerry Q10 - a device that comes with a physical keyboard - have not been strong.

Faucette said sales of the BlackBerry Z10 - a full touchscreen device also powered by the new BB10 operating system - are slowing down as well.

"We believe the production levels of 1.5 million to 2 million units per month are well in excess of the sell-through," Faucette said in a note to clients on Tuesday, adding that the company is likely going to be forced to cut production levels.

The Pacific Crest report comes less than a week after Jefferies analyst Peter Misek said sales of the Q10 were strong in both Canada and Britain - the two countries in which the device has been launched.

BlackBerry's volatile shares were down 5 percent at $14.80 in afternoon trading on the Nasdaq, while its Toronto-listed stock was down 5.5 percent at C$14.88.

($1=$1.00 Canadian)

(Reporting by Euan Rocha; Editing by Peter Galloway)

WASHINGTON (Reuters) - Hillary Clinton, already the front-runner in the minds of many Democrats for the 2016 U.S. presidential election, is writing a memoir about world affairs and her time as secretary of state that will likely fuel more speculation about her political future.

The presidential prospects of Clinton, the wife of former President Bill Clinton, are a subject of feverish speculation in Washington and elsewhere as Democrats look to see over the horizon past President Barack Obama.

The book, her fifth, is to be published next year, and a tour to promote the memoir in 2014 would serve only to generate more guessing about her plans for 2016.

Her inner circle insists Clinton has made no decision one way or the other. This has not stopped the formation of a "Ready for Hillary" political action committee to promote her potential candidacy and seek volunteers and monetary contributions.

Among the subjects Clinton will explore are the killing of Osama Bin Laden, the overthrow of the Qaddafi regime in Libya, the situations in Iraq and Afghanistan, the Arab Spring, diplomacy pertaining to Iran and North Korea and relations with U.S. allies.

"Hillary Clinton's extraordinary public service has given her a unique perspective on recent history and the challenges we face," said Jonathan Karp, president and publisher of the Simon & Schuster Publishing Group who will edit Clinton's as-yet untitled book.

The book will also address trends in economics, energy and climate change, democracy and human rights, the critical role of women and girls, technology and innovation and health and human development, Simon & Schuster said on Thursday.

When she left the State Department February 1, Clinton, 66, had been suffering from a blood clot near her brain. She said she needed some time to rest and to settle on ways she can help women and children in the United States and around the world.

She is now re-emerging. Last month she announced that she now supports marriage rights for gay Americans. Back when she ran for the Democratic presidential nomination in 2008 she had backed civil unions for gay couples.

On Tuesday night in Washington, she spoke about global women's rights at an event held by the non-governmental organization Vital Voices, sharing the stage with a potential 2016 rival, Vice President Joe Biden.

She will give her first paid speech in Dallas on April 24, the day before she attends ceremonies there marking the opening of George W. Bush's presidential library.

Polls show Clinton as the runaway frontrunner at this stage among Democrats for their party's 2016 presidential nomination and that she leads all potential Republican contenders, including former Florida Governor Jeb Bush, Florida Senator Marco Rubio and New Jersey Governor Chris Christie.

(Additional reporting by Chris Michaud in New York and Susan Heavey in Washington; editing by Jackie Frank)

"Save Rock and Roll" sold 154,000 copies in its debut week, according figures on Wednesday from Nielsen SoundScan, outpacing Kid Cudi's "Indicud," which sold 136,000 copies in its first week.

Industry forecasters pegged both albums to sell about 150,000 copes last week, according to trade publication Billboard.com.

Rock band Paramore, whose fourth album "Paramore" was last week's No. 1, fell to No. 12.

Pop singer Justin Timberlake's "The 20/20 Experience" and country singer Blake Shelton's "Based on a True Story" held at the third and fourth spots respectively on the chart for the second consecutive week.

Indie rock trio Yeah Yeah Yeahs' fourth album "Mosquito" debuted at No. 5 on the chart.

Pop singer Pink's "Just Give Me a Reason" topped the digital songs chart for another week with 262,000 downloads, a 7 percent decline from last week, while hip hop duo Macklemore & Ryan Lewis' "Can't Hold Us" was No. 2 again with 245,000 downloads, a 17 percent rise.

Macklemore & Ryan Lewis' "Thrift Shop" placed fourth, behind Rihanna's "Stay" and ahead of Justin Timberlake's "Mirrors" on the digital chart.

French DJ duo Daft Punk's new song "Get Lucky," which features singer-producer Pharrell Williams, sold 113,000 downloads last week on only three days of sales. It is the duo's first single in three years.

Year-to-date albums sales stand at 90.5 million, a 5 percent decrease from the same period last year, while 2013 digital song sales of 434 million have declined 2 percent compared to last year.

(Reporting by Eric Kelsey, editing by Jill Serjeant and Cynthia Osterman)

Galliano, who was fired by Dior in 2011 after he was caught on camera making anti-Semitic remarks in a Paris cafe, will teach a course titled "Show Me Emotion" at Parsons The New School For Design, the school said on Monday.

Parsons said the class "will be a dynamic and intimate opportunity for our students to learn from an immensely talented designer."

"We believe that over the past two years Galliano has demonstrated a serious intent to make amends for his past actions," the school added.

Earlier this year, the 52-year-old British designer, widely thought of as one of the most talented and creative names in fashion, spent several weeks working at Oscar de la Renta's studio in New York, preparing for de la Renta's New York Fashion Week show in February.

A French court handed out a 6,000-euro ($8,000) suspended fine to Galliano in 2011 after he was found guilty of anti-Semitic behavior. Galliano has said an addiction to drugs and alcohol had left him out of control and he was determined to make amends.

Parsons said students in the master class "will have the opportunity to engage in a frank conversation with Mr. Galliano about the challenges and complications of leading a design house in the 21st century."

Following his Dior dismissal, Galliano designed British model Kate Moss's wedding dress.

(Reporting by Chris Michaud, editing by Jill Serjeant and Doina Chiacu)

"Thank you everyone for your concern," Sambora said on Twitter. "I'm well, but had to stay in LA to take care of a personal matter. Love you all and see you very soon."

Sambora, 53, who spent time in rehab in 2007 and 2011 for alcohol and prescription drug abuse, was not included at Bon Jovi's performance in Calgary, Alberta, on Tuesday and the band said he would miss a run of North America concerts.

"Due to personal issues, Richie Sambora will not be performing on this upcoming leg. All shows will go on as scheduled," said a statement on the band's website on Wednesday, offering no other details or when Sambora might resume performing.

Sambora also missed Bon Jovi's 2011 North American and European tours.

Celebrity website TMZ.com, citing unnamed sources connected to the band, said Sambora's absence was due to long-running tension between the guitarist and singer Jon Bon Jovi.

Bon Jovi is scheduled to perform this week in Edmonton, Alberta, and Winnipeg, Manitoba, and St. Paul, Minnesota, on Sunday.

The "Because We Can" tour's April dates include Los Angeles, Denver, Las Vegas and other cities before international appearances kick off on May 7 in Capetown, South Africa.

The band is set to play in Sweden, Germany, Britain, Spain, Poland and Italy before returning to the United States in July.

(Reporting by Chris Michaud; Additional reporting by Eric Kelsey in Los Angeles; Editing by Patricia Reaney and Peter Cooney)

Sunday, April 21

Concordia Chiajna 1 Vaslui1

FC Astra4 Ceahlaul Piatra Neamt 2

Gloria Bistrita 0 CFR Cluj5

Pandurii Targu-Jiu2 Dinamo Bucharest0

Saturday, April 20

FC Viitorul Constanta 1 Rapid Bucharest 2

Turnu Severin 2 CSMS Iasi 1

Friday, April 19

Universitatea Cluj-Napoca 3 Gaz Metan Medias4

Standings PWDLFAPts

1Steaua Bucharest26 20 4260 21 64

-------------------------

2FC Astra27 15 5753 28 50

3Pandurii Targu-Jiu27 15 5742 35 50

-------------------------

4Petrolul Ploiesti 26 13 9440 21 48

-------------------------

5Dinamo Bucharest27 13 7739 29 46

6Vaslui27 11 9737 28 42

7Rapid Bucharest 27 11 8828 25 41

8CFR Cluj27 10 9846 31 39

9Gaz Metan Medias27 10 710 33 38 37

10 Brasov26 98932 35 35

11 Otelul Galati 26 89929 31 31

12 Universitatea Cluj-Napoca 27 7812 27 42 29

13 FC Viitorul Constanta 27 512 10 31 40 27

14 Ceahlaul Piatra Neamt 27 7614 34 47 27

-------------------------

15 Concordia Chiajna 27 6813 22 42 26

16 Turnu Severin 27 5814 25 36 23

17 CSMS Iasi 27 6417 26 40 22

18 Gloria Bistrita 27 3816 18 53 17

-------------------------

* Otelul Galati deducted 2 points.

1: Champions League preliminary round

2-3: Europa League

4: Europa League depending on domestic cup

15-18: Relegation

Next Fixtures (GMT):

Monday, April 22

Brasov v Otelul Galati (1600)

Steaua Bucharest v Petrolul Ploiesti (1745)