This is pure rumor-mongering -- one-sided at best, and irresponsible at worst. Note that the writer presents allegations as fact, without any counterargument/rebuttal. Note the use of obfuscating phrases such as "is now believed to" (by who, exactly?), "are now considered to be", "some have suggested", etc. Despite all this vagueness, the headline confidently declares that Madeleine died from a pill overdose.

All in all, this reads like the work of someone who is only superficially familiar with the case, hasn't taken the time to do the homework, knows nothing about forensic evidence, and doesn't really care anyway -- just wants to attract attention with a splashy headline. Shame.