Reception
The Lazarus Effect was generally negatively received by critics. On Rotten Tomatoes, 13% of 107 reviews were positive, with an average rating of 4/10. The site's consensus reads "The Lazarus Effect has a talented cast and the glimmer of an interesting idea, but wastes it all on insipid characters and dull, recycled plot points." On Metacritic, the film has a weighted average score of 31 out of 100, based on 29 critics, indicating "generally unfavorable reviews". Audiences polled by CinemaScore gave the film a grade of "C−" on an A+ to F scale.
Frank Scheck of The Hollywood Reporter gave the film a negative review, saying "The film squanders whatever potential it had, not to mention the talents of such performers as Duplass and Wilde who clearly deserve better." Geoff Berkshire of Variety also gave the film a negative review, saying "Mark Duplass and Olivia Wilde struggle to breathe life into a recycled thriller about the horrors of reanimation." In a negative review, Peter Keough of The Boston Globe said "There are lessons to be learned from this minimalist thriller. The first is that scaring people requires more than just tossing furniture around, turning the lights off and on, and basically sneaking up from behind and shouting 'Boo!'". Mick LaSalle of the San Francisco Chronicle gave the film one out of four stars, saying "This is an 83-minute movie that feels a half hour longer and, if it weren't for the loud crescendos, it would put people to sleep." Michael O'Sullivan of The Washington Post also gave the film one out of four stars, saying "It staggers, zombielike, from one jump-scare to another before petering out, a scant 83 minutes after rising from the slab." A.A. Dowd of The A.V. Club gave the film a C−, saying "Like too many horror films, this one seems targeted at a hypothetical audience using only 10 percent of its brainpower." Keith Staskiewicz of Entertainment Weekly also gave the film a C−, saying "I would have loved to see more from the filmmakers, daring to fail while staking out some new terror incognita instead of just going through the motions of an experiment for which we already have the results." Joe Neumaier of the New York Daily News gave the film two out of five stars, saying "The Lazarus Effect, clocking in at a brief 86 minutes, doesn’t go far enough, isn’t scary enough and has mad scientists who just aren’t mad enough. You watch it hoping it revives itself, but that dream is dead and buried."
Bruce Demara of the Toronto Star gave the film two out of four stars, saying "While The Lazarus Effect isn't the worst scary movie film you'll see this year, it is probably one of the most predictable and lazily plotted." James Berardinelli of ReelViews also gave the film two out of four stars, saying "The Lazarus Effect begins with an intriguing premise then proceeds to squander all the early goodwill through a slow, inexorable descent into cheap horror gimmicks." Writing for the St. Louis Post-Dispatch, Kevin C. Johnson gave the film two out of four stars and wrote "The Lazarus Effect boasts nothing special. It's not going to provide much relief for horror-starved audiences."
Claudia Puig of USA Today gave the film two and a half stars out of four, saying "Absorbing, well-crafted and appropriately tense, with a smart cast that raises it a notch above average." James Rocchi of The Wrap gave the film four out of five stars, saying "The Lazarus Effect doesn't exactly break new ground, but it nonetheless finds plenty to relish in the mouldering bits it stitches together as it gives classic themes about death, life and the soul a literal and figurative shot in the arm."