He signed for German team Schalke 04 in 2006, but eventually fell out of favour during his last season there, and transferred to Premier League side Newcastle United in the winter of 2008.

He played 21 times and scored a single goal for the Danish national team, representing them at the 2002 FIFA World Cup and Euro 2004 tournaments.

Born in Hørsholm, Løvenkrands signed his first professional contract with Danish Superliga club Akademisk Boldklub (AB) in February 1998.

He made his Superliga debut in July 1998, and was quickly touted as a future Danish national team player by his manager Christian Andersen.

In the group stage, he opened the scoring in the 3–2 win against Porto, and with his goal in the 1–1 draw against Inter Milan he secured Rangers' progression to the knock-out round.

New coach Fred Rutten chose not to employ Løvenkrands, even as Schalke struggled to remain in the race for the Bundesliga and were eliminated from the 2008–09 UEFA Cup group stage.

Løvenkrands joined Newcastle United on a two-week trial and soon signed a contract on 23 January 2009, with a duration until the end of the season.

Following another substitute appearance in the 1–1 draw against Sunderland, Løvenkrands made his first start against West Bromwich Albion on 7 February and scored Newcastle's second goal in their 3–2 victory in the ninth minute to make it 1–2.

He increased his tally to nine goals by heading in a José Enrique cross to put Newcastle level in a 2–2 draw[8] and dedicated it to his late father.

With Carroll injured throughout January, Løvenkrands had a successful month, scoring once in a 5–0 win over West Ham and playing well a week earlier against Wigan Athletic.

After the sale of Carroll to Liverpool in January, Løvenkrands gained more opportunities up front along with the likes of Leon Best and Nile Ranger.

He added one more in the next League Cup fixture, a 4–3 extra time loss to Blackburn Rovers, scoring from the spot to push the game into its latter stages.

[16] Alongside Akademisk Boldklub teammate and later Danish international Martin Albrechtsen, Løvenkrands made his debut with the Denmark under-19 national team in September 1997.

[17] While at Rangers, Løvenkrands made his senior international debut under national team coach Morten Olsen, in the 13 February 2002 friendly match 1–0 win against Saudi Arabia.

On 10 September 2008, he played his 21st national team game in the 3–2 2010 World Cup qualification win against Portugal, whereafter his international career went on hiatus.

[17] His effort in the Portugal game was praised by Morten Olsen,[18] but following the turmoil in his Schalke career, Løvenkrands had fallen out of contention for a place in the national team by September 2009.

[20] After Newcastle's return to the Premier League, Løvenkrands played his first game for Denmark in over two years, coincidentally against Portugal, as part of a 3–1 defeat.

[22] He left Rangers in June 2020 with the intention of taking a coaching position in Japan, but COVID-19 travel restrictions meant that he had not moved there as of December 2020.

Their father died aged 61 on 15 January 2010 after a long illness and Løvenkrands dedicated his goal against West Bromwich Albion three days later to him.

[27] Løvenkrands has since started a charity appeal to fund research into a cure for Alzheimer's disease, from which his father suffered during the final five years of his life.