Ranked by weight lost versus a comparison group, smallest at the bottom. Exercise alone is the smallest. Gastric bypass, about −27% at 3 years, is the largest. Evidence strength is a badge.
Never stop or change bipolar medication without your prescriber, even if you think it causes weight gain. Ask about weight-friendly options and add-ons instead.
Lithium users: diarrhea, vomiting, dehydration, very low salt, and fast weight loss can raise lithium levels (Tondo 2019 (opens in a new tab)). In a real-world cohort starting tirzepatide while on lithium, levels rose and one person developed symptomatic toxicity (Rescalli 2026 (opens in a new tab)). Get a lithium level when starting any GLP-1 drug or a new diet.
Ranked by what people say has helped them. Results vary, and it's not medical advice.
Bottom to top is least weight lost to most weight lost, using percents and kilograms versus a comparison group at about a year or more, as the Oct 15 file ranks them. A percent and a kilogram are not the same unit. The card says which one it is.
Evidence strength is a badge. It does not set the rung. Clinician-only says who may prescribe or operate. It does not move a large loss down.
In the order people say they climbed. Notes on the medicines (“ok,” “great,” and the side-effect line on retatrutide) are marked as coming from this order. They are not trial labels. Tracking and protein stay on this order. The Oct 15 file still has no separate trial for either.
Where the orders disagree
What people report starts with tracking, protein, and walking, then three medicines. What works most ranks by reported weight loss. That medicine order matches the percents: semaglutide, then tirzepatide, then retatrutide. Surgery is a larger loss than any of those and is not on this order. Evidence strength is a badge.
Surgery is the largest loss in the file. It is not on this order.
Gastric bypass lost 26.8% of body weight at 3 years, sleeve 19.4%, band 14.0%. The Swedish Obese Subjects study, not randomized, found 3.0 extra years of life and a mortality hazard ratio of 0.77 over a median 24 years. This order stops at retatrutide, whose phase 3 result is −25.0% versus −3.9% at the top dose, and which is not FDA-approved.
The three medicines on this order are in the same order as the percents
Semaglutide 2.4 mg lost 14.9% versus 2.4% at 68 weeks. Tirzepatide 15 mg lost 20.9% versus 3.1% at 72 weeks. Retatrutide’s top phase 3 dose lost 25.0% versus 3.9%. The notes on this order are “ok,” “great,” and more side effects for some people, including higher heart rate and sleep issues, especially at higher doses. The heart-rate and sleep line is from this order. This research file does not report it.
Tracking and protein have no number in the file. Exercise does, and it is small.
Calorie tracking and higher protein are the start of this order. The file has no separate result for either. Exercise, which is the third rung on this order, is the smallest weight effect in the file: “small weight losses,” and about 1.1 kg extra when added to a diet. Blood pressure, triglycerides, and glucose improved even without much weight loss. The diet comparison found low-fat and low-carb nearly tied (−5.3 kg vs −6.0 kg), so the pattern you can keep outranks keto’s uncontrolled −4.2 kg.
Two other medicines are on the effect ladder and flagged for bipolar disorder
Phentermine plus topiramate lost 9.8% versus 1.2%. Naltrexone plus bupropion lost 6.1% versus 1.3%. This order does not list them. Phentermine is a stimulant-like drug. Bupropion is an antidepressant. The file flags both for bipolar disorder and marks that flag as reasoning, not as a bipolar trial.
The notes start at the bottom rung and climb toward the largest effect.
The notes follow what people report, from the first step to the last.
Levels
Tracking calories
Tracking calories
What works most
Not ranked on its own. The file has no separate result for calorie tracking.
What people report
Rung 1 of 6
Evidence strengthno sources yet
What you do
Track what you eat, in calories. This is the first rung on this order.
Why it works
Why it may help
The Oct 15 weight file does not report a result for calorie tracking on its own. Inside the intensive program, food records are one part of a larger program, not a separate effect.
How you know you've passed it
You have a record of what you are eating and can see the pattern.
What the next level asks
The next rung is Eating higher protein to feel full. It asks this: Eat more protein so meals leave you feeling full. That reason is the wording on this order.
Evidence
Studies
No sources collected yet
Clinical data and guidelines
No sources collected yet
What clinicians say works
No sources collected yet
What real people report
No sources collected yet
Mechanism
No sources collected yet
Evidence here is thin. A later study, a case report, or carefully labeled anecdata can be added to build this rung up.
Safety
No separate safety note was collected for tracking.
Eating higher protein to feel full
Eating higher protein to feel full
What works most
Not ranked. The file has no protein trial.
What people report
Rung 2 of 6
Evidence strengthno sources yet
What you do
Eat more protein so meals leave you feeling full. That reason is the wording on this order.
Why it works
Why it may help
The research file does not report a protein trial, so no effect number is given here.
How you know you've passed it
Meals with more protein leave you fuller than they did, and you can keep eating that way.
What the next level asks
The next rung is Exercise, including walking you enjoy. It asks this: Exercise, including walking you enjoy. That is the rung on this order. The research result is exercise alone, or exercise added to a diet.
Evidence
Studies
No sources collected yet
Clinical data and guidelines
No sources collected yet
What clinicians say works
No sources collected yet
What real people report
No sources collected yet
Mechanism
No sources collected yet
Evidence here is thin. A later study, a case report, or carefully labeled anecdata can be added to build this rung up.
Exercise alone
Exercise, including walking you enjoy
Wording on this order: Exercise, including walking you enjoy
On What works most: Exercise alone
What works most
Rung 1 of 12
What people report
Rung 3 of 6
Evidence strengthCochrane
What you do
Exercise, including walking you enjoy. That is the rung on this order. The research result is exercise alone, or exercise added to a diet.
Why it works
Why it may help
The Cochrane review’s weight change is small. The metabolic changes showed up anyway.
How you know you've passed it
Walking or other exercise you enjoy is part of the week. The file does not treat a kilogram target as the point of this rung.
What the next level asks
The next rung is Keto, in bipolar disorder. It asks this: A ketogenic diet supervised with the prescriber if you take lithium or an SGLT2 drug. Details and the mania case are on the bipolar keto card.
What the next level asks
The next rung is Ozempic (semaglutide). It is CLINICIAN-ONLY. It asks this: A prescriber titrates semaglutide to 2.4 mg for weight. Ozempic is the name on this order. The weight-loss dose in STEP 1 is the 2.4 mg dose studied under the Wegovy brand. The file uses the dose, not a brand comparison.
43 studies. Small weight losses versus no treatment. Exercise added to diet: an extra −1.1 kg. Higher intensity: −1.5 kg. Blood pressure, triglycerides, and glucose improved even without much weight loss.
Clinical data and guidelines
No sources collected yet
What clinicians say works
No sources collected yet
What real people report
No reports collected yet
Mechanism
No sources collected yet
Safety
With bipolar disorder, protect sleep. Sleep loss is a mania trigger on the bipolar sleep card. That is not an exercise trial.
Keto, in bipolar disorder
Keto, in bipolar disorder
What works most
Rung 2 of 12
What people report
Not on this weight ladder. Keto is on the bipolar order of what people report.
Evidence strengthsingle-arm pilot
What you do
A ketogenic diet supervised with the prescriber if you take lithium or an SGLT2 drug. Details and the mania case are on the bipolar keto card.
Why it works
Why it may help
Weight fell in the pilots. The file does not treat that as a larger loss than a diet you can keep for a year.
How you know you've passed it
Weight and blood pressure have moved, and lithium levels have been rechecked.
What the next level asks
The next rung is The eating pattern you can keep. It asks this: Pick a lower-calorie pattern you can stay on. The trial comparison was low-fat versus low-carb. A second trial added a daily eating window to calorie restriction.
The researcher’s own account is summarized on the bipolar keto card. Search excerpt.
Mechanism
No sources collected yet
Counterarguments, and how they're addressed
Lithium levels, SGLT2 drugs and ketoacidosis, and an antidepressant-without-a-mood-stabilizer mania case are on the bipolar card. They are not solved by the kilograms.
Evidence here is thin. A later study, a case report, or carefully labeled anecdata can be added to build this rung up.
Safety
Clinician-supervised if you take lithium. Get a level when the diet starts.
The eating pattern you can keep
The eating pattern you can keep
What works most
Rung 3 of 12
What people report
Not on this order. Tracking and protein, which this order does list, have no separate number in the file.
Evidence strengthRCTs
What you do
Pick a lower-calorie pattern you can stay on. The trial comparison was low-fat versus low-carb. A second trial added a daily eating window to calorie restriction.
Why it works
Why it may help
Both patterns lost a similar amount. The file’s point is adherence, not a winning brand of diet.
How you know you've passed it
You are still on the pattern at a year, and weight is down in the range these trials saw. Stopping early is the result the trials were built to notice.
What the next level asks
The next rung is Orlistat. It asks this: Orlistat blocks some fat absorption. It is sold over the counter and by prescription. Take it with the prescriber if you are on other medicines.
Time-restricted eating with calorie restriction: −8.0 versus −6.3 kg, not significant. n=139.
Clinical data and guidelines
No sources collected yet
What clinicians say works
No sources collected yet
What real people report
No reports collected yet
Mechanism
No sources collected yet
Safety
If you take lithium, a very low-salt crash diet can raise the level. That warning is the lithium guide’s, linked from the page notice.
Orlistat
Orlistat
What works most
Rung 4 of 12
What people report
Not on this order
Evidence strengthRCT
What you do
Orlistat blocks some fat absorption. It is sold over the counter and by prescription. Take it with the prescriber if you are on other medicines.
Why it works
Why it may help
Less dietary fat is absorbed. The four-year trial shows a few kilograms more than placebo, and fewer new diabetes cases.
How you know you've passed it
You are still taking it, and the GI effects are tolerable. Half the trial did not finish.
What the next level asks
The next rung is Add-on for antipsychotic weight gain. It is CLINICIAN-ONLY. It asks this: If quetiapine, olanzapine, or a similar medicine is driving weight up, the prescriber can add one of these. Do not stop the psychiatric medicine to lose the weight.
If quetiapine, olanzapine, or a similar medicine is driving weight up, the prescriber can add one of these. Do not stop the psychiatric medicine to lose the weight.
Why it works
Why it may help
The network meta-analysis ranks semaglutide as the largest add-on loss in those trials, then liraglutide, topiramate, and metformin.
How you know you've passed it
Weight stops climbing and turns down, with the psychiatric medicine still in place.
What the next level asks
The next rung is Intensive behavioral program. It asks this: A structured program: coaching, food records, activity, and follow-up for years, not a week of tracking. USPSTF says offer or refer adults with obesity. The benefit rating is “moderate net benefit.”
The fecal-transplant patient described severe food cravings and distinct weight gain on quetiapine, which stopped after the change. One person. The bipolar transplant card has the rest.
Mechanism
No sources collected yet
Safety
Clinician-only. Not a bipolar trial. Lithium plus a GLP-1 drug needs a level check. See the page notice.
Intensive behavioral program
Intensive behavioral program
What works most
Rung 6 of 12
What people report
Not on this order. Tracking, which this order lists first, is one piece of a program like this.
Evidence strengthRCTguideline
What you do
A structured program: coaching, food records, activity, and follow-up for years, not a week of tracking. USPSTF says offer or refer adults with obesity. The benefit rating is “moderate net benefit.”
Why it works
Why it may help
People in the intensive arm of Look AHEAD were still lighter at eight years than the comparison group.
How you know you've passed it
Years in, some of the loss is still gone. The file does not treat a return toward baseline as a personal failure. It is what the curves do.
What the next level asks
The next rung is Naltrexone plus bupropion. It is CLINICIAN-ONLY. It asks this: A prescriber combines naltrexone and bupropion. Do not start it for weight if you have bipolar disorder without the psychiatrist in the decision.
Offer or refer adults with obesity to intensive behavioral counseling. Moderate net benefit.
What clinicians say works
No sources collected yet
What real people report
No reports collected yet
Mechanism
No sources collected yet
Safety
Low medical risk compared with the drugs and surgery above it. Sleep still matters if you have bipolar disorder.
CLINICIAN-ONLY
Naltrexone plus bupropion
Naltrexone plus bupropion
What works most
Rung 7 of 12
What people report
Not on this order
Evidence strengthphase-3 RCT
Bipolar caution: bupropion is an antidepressant. The file marks the switch concern as reasoning, not as a bipolar trial.
What you do
A prescriber combines naltrexone and bupropion. Do not start it for weight if you have bipolar disorder without the psychiatrist in the decision.
Why it works
Why it may help
The phase 3 trial shows more weight loss than placebo. Completion was poor.
How you know you've passed it
You are still on it at a year and the percent is in this range. Half the trial was not.
What the next level asks
The next rung is Phentermine plus topiramate. It is CLINICIAN-ONLY. It asks this: A prescriber uses phentermine with topiramate. Discuss it with the psychiatrist before anyone with bipolar I starts a stimulant-like drug.
n=1,742. −6.1% versus −1.3% at 56 weeks. Half did not complete. Nausea in 29.8%.
Clinical data and guidelines
No sources collected yet
What clinicians say works
No sources collected yet
What real people report
No reports collected yet
Mechanism
No sources collected yet
Counterarguments, and how they're addressed
Bupropion is an antidepressant. Antidepressants without a mood stabilizer carry switch concerns. The file points at the keto-plus-venlafaxine mania case on the bipolar page and says this is reasoning, not a sourced bipolar trial of this combination.
Safety
Clinician-only. Nausea was common. Talk to the psychiatrist before using an antidepressant for weight.
CLINICIAN-ONLY
Phentermine plus topiramate
Phentermine plus topiramate
What works most
Rung 8 of 12
What people report
Not on this order
Evidence strengthphase-3 RCT
Bipolar caution: phentermine is stimulant-like. The file found no bipolar trial and marks the mania concern as pharmacology reasoning.
Dose
High dose in the trial: phentermine 15 mg with topiramate 92 mg. Lower dose: 7.5 mg with 46 mg.
What you do
A prescriber uses phentermine with topiramate. Discuss it with the psychiatrist before anyone with bipolar I starts a stimulant-like drug.
Why it works
Why it may help
The phase 3 trial shows a large one-year percent versus placebo.
How you know you've passed it
Weight is down at a year and sleep is intact. Sleep loss is a separate mania risk, on the bipolar sleep card.
What the next level asks
The next rung is Semaglutide 2.4 mg. It is CLINICIAN-ONLY. It asks this: A prescriber titrates semaglutide to 2.4 mg for weight. Ozempic is the name on this order. The weight-loss dose in STEP 1 is the 2.4 mg dose studied under the Wegovy brand. The file uses the dose, not a brand comparison.
n=2,487. −7.8% (7.5/46 mg) and −9.8% (15/92 mg) versus −1.2% at 56 weeks. 70% versus 21% reached at least 5% loss.
Clinical data and guidelines
No sources collected yet
What clinicians say works
No sources collected yet
What real people report
No reports collected yet
Mechanism
No sources collected yet
Counterarguments, and how they're addressed
Phentermine is a stimulant-like amphetamine relative. The file says stimulants and sleep loss can tip bipolar I toward mania, marks that as pharmacology reasoning, and says no bipolar trial was found.
Safety
Clinician-only. Do not combine it with lost sleep.
CLINICIAN-ONLY
Semaglutide 2.4 mg
Ozempic (semaglutide)
Wording on this order: Ozempic (semaglutide)
On What works most: Semaglutide 2.4 mg
What works most
Rung 9 of 12
What people report
Rung 4 of 6
Evidence strengthphase-3 RCTs
Note
Ok.
Dose
2.4 mg weekly in STEP 1. The file does not reprint the step-up schedule. It says stomach effects are usually handled by raising the dose slowly.
What you do
A prescriber titrates semaglutide to 2.4 mg for weight. Ozempic is the name on this order. The weight-loss dose in STEP 1 is the 2.4 mg dose studied under the Wegovy brand. The file uses the dose, not a brand comparison.
Why it works
Why it may help
People lost about 15% of body weight versus about 2% on placebo, and a later trial found fewer heart events in people with overweight and heart disease.
How you know you've passed it
The loss is in this range while you stay on the medicine. Stopping is not a passed rung: in the extension, people regained 11.6 percentage points by week 120.
What the next level asks
The next rung is Tirzepatide. It is CLINICIAN-ONLY. It asks this: A prescriber uses tirzepatide and checks a lithium level if you take lithium.
What the next level asks
The next rung is Tirzepatide. It is CLINICIAN-ONLY. It asks this: A prescriber uses tirzepatide and checks a lithium level if you take lithium.
In a 1.5-million-person matched cohort, GLP-1 drugs versus SGLT2 inhibitors were linked to lower mortality among people with serious mental illness (4.91% versus 6.45%, HR 0.76). Observational. Not a bipolar weight trial.
Thread title: GLP-1 plus lithium and a rise in the lithium level. Search excerpt, not the cohort.
Mechanism
No sources collected yet
Counterarguments, and how they're addressed
Stomach side effects are usually transient. The file’s answer is a slow dose increase. In SELECT, 16.6% stopped for side effects versus 8.2%.
Weight comes back when the drug stops. Not solved. It is long-term therapy. After a 17.3% loss at week 68 in the extension subset (n=327), people regained 11.6 percentage points by week 120, leaving a net 5.6%.
Mood effects are not settled. Search excerpts are mixed: many bipolar users report no change, and some report mood swings or flatness.
Safety
Clinician-only. If you take lithium, check a level when a GLP-1 drug starts. One search-excerpt thread is titled as lithium rising on a GLP-1 drug. The measured cohort is on the tirzepatide card and in the page notice.
CLINICIAN-ONLY
Tirzepatide
Tirzepatide
What works most
Rung 10 of 12
What people report
Rung 5 of 6
Evidence strengthphase-3 RCT
Note
Great.
Dose
5, 10, or 15 mg in SURMOUNT-1. The file does not reprint the step-up calendar.
What you do
A prescriber uses tirzepatide and checks a lithium level if you take lithium.
Why it works
Why it may help
The 72-week trial shows a dose-ordered loss, largest at 15 mg.
How you know you've passed it
Weight is down while the medicine continues, and the lithium level has been rechecked.
What the next level asks
The next rung is Retatrutide. It asks this: Only inside a trial, according to Lilly’s medical-information page. Do not buy gray-market product. A JAMA warning about online “retatrutide” was a search result and was not opened.
What the next level asks
The next rung is Retatrutide. It asks this: Only inside a trial, according to Lilly’s medical-information page. Do not buy gray-market product. A JAMA warning about online “retatrutide” was a search result and was not opened.
People on lithium who started tirzepatide. Lithium +0.08 mmol/L at 12 weeks. Two patients above 1.2. One with toxicity. Completers had lost 17.7% at 12 months.
Clinical data and guidelines
No sources collected yet
What clinicians say works
No sources collected yet
What real people report
No reports collected yet
Mechanism
No sources collected yet
Counterarguments, and how they're addressed
Lithium can rise. In the real-world cohort, lithium was +0.08 mmol/L at 12 weeks, two patients went above 1.2, and one had symptoms. The answer is a level, not skipping the drug in silence.
Safety
Clinician-only. Symptomatic lithium toxicity has occurred. Get a level when you start.
Retatrutide
Retatrutide
What works most
Rung 11 of 12
What people report
Rung 6 of 6
Evidence strengthphase-3 RCTnot approved
Not FDA-approved. The file says it is not available outside trials, and that a filing is planned for 2027.
Note
More weight loss, but more side effects for some people (higher heart rate, sleep issues), especially at higher doses.
Dose
Phase 3 top dose in the file: 12 mg. Phase 2 went to a loss of 24.2% at 48 weeks. The file does not reprint every dose step.
What you do
Only inside a trial, according to Lilly’s medical-information page. Do not buy gray-market product. A JAMA warning about online “retatrutide” was a search result and was not opened.
Why it works
Why it may help
The phase 3 trial shows about a quarter of body weight off at the top dose, versus about 4% on placebo.
How you know you've passed it
There is no approved course to finish. The side-effect note on this order, higher heart rate and sleep issues especially at higher doses, is from this order. This file does not report those effects.
What the next level asks
The next rung is Bariatric surgery. It is CLINICIAN-ONLY. It asks this: A bariatric team offers bypass, sleeve, or band after the non-surgical steps have been considered. Plan lithium and other pills with the prescriber before surgery. Absorption of pills, including lithium, can change.
What the next level asks
This is the top of this ladder. There is no next rung in this order.
Warns that gray-market “retatrutide” sold online is unapproved. The page was not opened.
What clinicians say works
No sources collected yet
What real people report
No reports collected yet
Mechanism
No sources collected yet
Counterarguments, and how they're addressed
It is not approved and not sold for consumers except as unapproved product. The file’s answer is: do not use the gray market. Wait for a trial or a real approval.
Research note
The side-effect sentence stays on this card as a note from this order. The Oct 15 file does not describe heart rate or sleep on retatrutide.
Safety
Trials only. The note on this order about heart rate and sleep is not restated here as a study finding.
CLINICIAN-ONLY
Bariatric surgery
Bariatric surgery
What works most
Rung 12 of 12
What people report
Not on this order
Evidence strengthRCTlong controlled cohort
What you do
A bariatric team offers bypass, sleeve, or band after the non-surgical steps have been considered. Plan lithium and other pills with the prescriber before surgery. Absorption of pills, including lithium, can change.
Why it works
Why it may help
The operation changes how much food the stomach holds and, for bypass, how calories are absorbed. The three-year percents and the long mortality cohort are the file’s results.
How you know you've passed it
Weight is down at three years and vitamin follow-up is in place. The risk is not zero: 0.2% died within 90 days in the Swedish cohort.
What the next level asks
This is the top of this ladder. There is no next rung in this order.
Swedish Obese Subjects, median 24 years. Mortality HR 0.77. 3.0 years longer life than usual care. Still 5.5 years shorter than the general population. 90-day post-op death 0.2%.
Clinical data and guidelines
No sources collected yet
What clinicians say works
No sources collected yet
What real people report
No reports collected yet
Mechanism
No sources collected yet
Counterarguments, and how they're addressed
Surgery, lifelong vitamins, and changed absorption of medicines including lithium are not fully solved. The file’s answer is a bariatric team and the prescriber planning together.
Safety
Clinician-only. 90-day mortality 0.2% in the long cohort. Tell the prescriber about every pill, including lithium, before the operation.
What the research file could not verify
Retatrutide is not FDA-approved. A filing is planned for 2027, from Lilly’s medical-information page, which was a search excerpt.
Gray-market retatrutide sold online: a JAMA warning was a search result and was not opened.
GLP-1 trials specifically in bipolar disorder were not found, beyond the cohorts named on the cards.
The “higher heart rate, sleep issues” line on retatrutide is from this order. It is not in this research file.
The FDA dietary-supplement page is linked from the file’s supplement warning.