Anxiety, Wegovy, and overlapping symptoms
Generalised anxiety disorder (GAD) is the most common anxiety disorder in the UK, affecting around 7.5% of the population. It’s more common in women (8.9%) than men (5.7%).2
Anxiety isn’t just worry. It causes physical symptoms like a racing heart, sweating, nausea, shakiness, and muscle tension.
Several of Wegovy’s common side effects, especially nausea, dizziness, and increased heart rate, overlap with the physical symptoms of anxiety.
If you already live with anxiety, it can be hard to tell whether a symptom is your anxiety or the medication.
Blood sugar fluctuations can also mimic anxiety symptoms. Wegovy reduces appetite, which can lead to irregular eating.
When blood sugar drops, the body releases adrenaline, causing shakiness, irritability, and a racing heart.
How Wegovy works
Wegovy contains the drug semaglutide. It mimics a hormone called GLP-1 that our bodies naturally produce in the gut after eating.
GLP-1 slows gastric emptying (how quickly food leaves your stomach), helping you feel fuller for longer. It also acts on our brain’s appetite control centre to reduce hunger and cravings.
Wegovy is given as a once-a-week injection, starting at a low dose and gradually increasing to the maintenance dose of 2.4 mg over 16 weeks. This slow increase helps reduce gastrointestinal side effects like nausea.10
Our gut produces around 95% of our body’s serotonin, a neurotransmitter closely linked to mood and anxiety.4
Because Wegovy acts on the gut, some researchers have investigated whether GLP-1 drugs affect mood, though the evidence so far shows no clear direct association between Wegovy and mood.1
Medication interactions
The Wegovy Summary of Product Characteristics (SmPC) confirms that semaglutide has no clinically relevant effects on the function of co-administered oral medications.10 Below is a breakdown of specific anxiety medication classes.
SSRIs (sertraline, citalopram, fluoxetine)
There’s no known direct interaction between Wegovy and SSRIs. Semaglutide is broken down through a process called proteolytic cleavage, while SSRIs are metabolised by liver enzymes. They use completely different pathways, so they don’t compete with each other.10
Semaglutide slows gastric emptying, which could theoretically delay the absorption of oral medications.
However, SSRIs have a wide therapeutic window, meaning minor changes in absorption are unlikely to affect how well they work.
The main consideration is the overlap of side effects. Both Wegovy and SSRIs can cause nausea, particularly in the early weeks of treatment.
SNRIs (venlafaxine, duloxetine)
As with SSRIs, there’s no known direct interaction between semaglutide and SNRIs. They’re metabolised through different pathways.
Both SNRIs and Wegovy can cause nausea, reduced appetite, and gastrointestinal discomfort. If you’re starting both around the same time, your prescriber may stagger the start dates to help identify which medication is causing any side effects.
Benzodiazepines (diazepam, lorazepam)
There’s no known interaction between Wegovy and benzodiazepines. Benzodiazepines act on the GABA system in the brain, which is entirely separate from the GLP-1 pathway that Wegovy targets.
Benzodiazepines are typically prescribed for short-term use, usually a few weeks at most, because of the risk of dependence.
If you’re taking them alongside Wegovy, the main overlap is that both can cause dizziness in some people.
Unlike SSRIs, benzodiazepines work quickly, often within 30 to 60 minutes. Because they’re not taken long-term, the window for interaction with Wegovy’s gradual dose titration is relatively short.
Beta-blockers (propranolol)
Propranolol is commonly prescribed for the physical symptoms of anxiety, such as a racing heart, trembling, and sweating. There’s no known interaction between semaglutide and propranolol.10
Both medications can lower heart rate to a degree. Semaglutide causes a small average increase of around 1-4 beats per minute, while propranolol lowers heart rate. In practice, these effects tend to balance out rather than cause problems.
The main consideration is blood pressure. Both weight loss from Wegovy and propranolol can lower blood pressure.
If you’re losing weight while taking propranolol, your GP should monitor your blood pressure and may need to adjust your dose.
Buspirone
Buspirone doesn’t interact with semaglutide. It’s metabolised by liver enzymes and works on serotonin receptors, with no overlap with GLP-1 receptor activity.
Buspirone is less commonly prescribed than SSRIs but is sometimes used when SSRIs aren’t suitable. It takes several weeks to reach full effect, similar to SSRIs, and doesn’t carry the dependence risk of benzodiazepines.
Both buspirone and Wegovy can cause nausea and dizziness. Your prescriber can help manage this if the combination causes discomfort.
Side effects: where Wegovy and anxiety overlap
Several Wegovy side effects sit in the same territory as anxiety symptoms, which can make the first few weeks confusing.
| Symptom |
Wegovy side effect? |
Anxiety symptom? |
Both? |
| Nausea |
Yes (common) |
Yes |
Yes |
| Racing heart |
Yes (uncommon) |
Yes (common) |
Yes |
| Dizziness |
Yes (common) |
Yes |
Yes |
| Sweating |
Uncommon |
Yes (common) |
Possible |
| Fatigue |
Yes (common) |
Yes |
Yes |
| Headache |
Yes (common) |
Yes |
Yes |
| Reduced appetite |
Yes (intended effect) |
Yes |
Yes |
| Shakiness |
Not directly, but via low blood sugar |
Yes (common) |
Yes |
If you notice new symptoms after starting Wegovy, consider whether they might be side effects rather than worsening anxiety.
Timing can help you tell them apart. Wegovy side effects tend to be strongest in the first few days after each injection and improve over the week.
Anxiety symptoms are usually more persistent and often have identifiable triggers.
If you’re prone to health anxiety, worrying about Wegovy’s side effects can itself trigger anxiety symptoms. This creates a feedback loop where the worry about feeling unwell produces the very symptoms you’re worried about.
Keeping a brief symptom diary for the first few weeks can help you and your prescriber distinguish between Wegovy side effects and anxiety.
Side effects comparison by medication class
| Side effect |
Wegovy |
SSRIs |
SNRIs |
Benzodiazepines |
Buspirone |
| Nausea |
Common |
Common |
Common |
Uncommon |
Common |
| Diarrhoea |
Common |
Common |
Common |
Uncommon |
Uncommon |
| Constipation |
Common |
Common |
Common |
Uncommon |
Uncommon |
| Dizziness |
Common |
Common |
Common |
Common |
Common |
| Headache |
Common |
Common |
Common |
Common |
Common |
| Reduced appetite |
Common |
Common |
Common |
Uncommon |
Uncommon |
| Fatigue |
Common |
Common |
Common |
Common |
Common |
| Drowsiness |
Uncommon |
Common |
Common |
Common |
Common |
If you’re already taking an anxiety medication and start Wegovy, monitor for worsening gastrointestinal symptoms in the first few weeks. These tend to improve as your body adjusts to each dose increase.
Foods to focus on
Nutrition won’t replace therapy or medication for managing anxiety, but stable blood sugar and adequate nutrient intake can reduce the physical symptoms that overlap with Wegovy’s side effects.
Protein-rich foods for serotonin production
Tryptophan is an amino acid that our bodies use to produce serotonin. Good sources include turkey, chicken, eggs, salmon, tofu, and pumpkin seeds.
Including a protein source at each meal also helps preserve muscle mass during weight loss on Wegovy.
Omega-3-rich foods
A dose-response meta-analysis of randomised controlled trials found that omega-3 supplementation was associated with reduced anxiety symptoms.3 The greatest benefit was seen at around 2 g per day.
Oily fish like salmon, mackerel, sardines, and anchovies are the richest dietary sources.
Aim for two portions of fish per week. Plant sources include walnuts, flaxseeds, and chia seeds.
Complex carbohydrates and blood sugar stability
This is especially relevant for people with anxiety on Wegovy. Blood sugar fluctuations can mimic anxiety symptoms, causing shakiness, irritability, and a racing heart.
When blood sugar drops, the body releases adrenaline and cortisol. For someone with anxiety, this adrenaline surge can feel identical to a panic attack or an anxiety episode.
Complex carbohydrates like rolled oats, sweet potatoes, brown rice, and whole-grain or sourdough bread release energy more slowly. Pairing them with protein, fat, and fibre from vegetables further slows absorption.
Gut health: fermented foods and fibre
Our gut produces around 95% of our body’s serotonin. Research into the gut-brain axis suggests that gut microbiome diversity may influence anxiety symptoms.4
Because Wegovy acts directly on the gut, supporting your microbiome through diet may help both your digestion and your mood.
Include fermented foods like natural yoghurt, kefir, sauerkraut, kimchi, and miso. High-fibre foods like beans, lentils, vegetables, and oats feed beneficial gut bacteria.
Caffeine: a specific trigger for anxiety
Caffeine stimulates the nervous system and can increase heart rate, restlessness, and anxious feelings. If you’re prone to anxiety, these effects can be significant.
Caffeine blocks adenosine receptors in the brain, which is what makes us feel alert. But it also triggers the release of adrenaline, the same hormone involved in the fight-or-flight response.
If you’re starting Wegovy and already managing anxiety, consider limiting coffee to one or two cups before midday.
Foods to limit
Alcohol disrupts sleep quality and can increase anxiety the following day. Ultra-processed foods high in refined sugar may also contribute to poorer mental health outcomes.
Managing reduced appetite on Wegovy
Wegovy significantly reduces appetite, which can make it challenging to eat enough. Skipping meals may worsen anxiety through blood sugar drops and nutrient deficiencies.
We recommend eating three balanced meals a day, even if you’re not hungry and include protein-rich snacks between meals if needed.
If you’re struggling to eat because your appetite is so low, consider foods and meals that are easier to digest, like smoothies, soups with boiled eggs, or scrambled eggs and sauteed vegetables on toast.
Physical activity
Exercise is one of the most effective non-pharmaceutical interventions for anxiety. A systematic review and meta-analysis found that both aerobic and resistance exercise significantly reduced anxiety symptoms.5
Aerobic exercise
Walking, swimming, cycling, and jogging all have strong evidence for reducing anxiety. The effect appears to be partly driven by the release of endorphins and the reduction in stress hormones such as cortisol.
If you’re not currently active, any movement is better than none. A 10-minute walk after dinner is a practical starting point.
Linking a new habit to something you already do, like walking after a meal, helps it become automatic over time.9
Resistance training
Resistance exercise also reduces anxiety symptoms. A separate meta-analysis found significant reductions in anxiety among both healthy adults and those with physical or mental health conditions.6
You don’t need a gym. Bodyweight exercises like squats, press-ups, and lunges at home are a practical way to start.
Even one or two short sessions a week can make a difference, and you can gradually do more as you feel stronger.
Yoga and nervous system regulation
Yoga is particularly relevant to anxiety because it combines physical movement with breathing techniques that directly influence the nervous system.
Slow, controlled breathing activates the parasympathetic nervous system, which counteracts the fight-or-flight response.
This combination makes yoga particularly helpful if high-intensity exercise feels overwhelming or triggers your anxiety.
Practical starting points
- Start with what feels manageable; even a 10-minute session is beneficial
- Choose activities you enjoy so you’re more likely to keep going
- Combine aerobic and resistance exercise across the week
- Exercise outdoors where possible, as nature exposure has additional anxiety-reducing effects
- If Wegovy is reducing your energy levels in the early weeks, lower your intensity and build back up
Mental health and anxiety
The link between obesity and anxiety
A systematic review and meta-analysis found that people with obesity are around 1.4 times more likely to have an anxiety disorder than those at a healthy weight.7 This means many people starting Wegovy will already be managing anxiety.
The relationship runs in both directions. Anxiety can trigger emotional eating, increase cortisol levels (which promotes fat storage around the abdomen), and reduce motivation for physical activity.
Living with obesity can increase anxiety through body dissatisfaction, weight stigma, and the burden of managing a long-term health condition.
What the clinical trial data shows
A post hoc analysis of the STEP 1, 2, 3, and 5 trials specifically examined psychiatric outcomes.
It found that semaglutide 2.4 mg didn’t increase the risk of anxiety or depression symptoms compared to placebo.1
This is the most relevant evidence for anyone worried about Wegovy worsening their anxiety. The STEP trials included thousands of participants over extended periods.
Weight loss itself can improve anxiety for some people, particularly if body image or weight-related health conditions were contributing factors.
However, anxiety is a complex condition with many contributing factors, and weight loss alone isn’t a treatment for it.
The worry-symptom feedback loop
If you’re prone to anxiety, you might find yourself hyper-aware of any changes after starting Wegovy.
Worrying about potential side effects can trigger genuine physical anxiety symptoms: nausea, racing heart, sweating. These then feel like confirmation that the medication is causing problems, which increases the worry further.
This isn’t the medication causing anxiety. It’s your nervous system responding to the perceived threat of a new medication.
When to consider therapy
NICE recommends CBT as a first-line treatment for generalised anxiety disorder.11 If you’re starting Wegovy and already managing anxiety, combining medication support with talking therapy can address both conditions.
Your GP can refer you for NHS talking therapies, or you can self-refer in most areas of England.
When to speak to your GP
Contact your GP or prescriber if you experience any of the following while taking Wegovy:
- New or worsening anxiety symptoms that interfere with daily life
- Persistent low mood or feelings of hopelessness
- Thoughts of self-harm or suicide
- Severe nausea or vomiting that prevents you from taking your anxiety medication
- Panic attacks that are new or more frequent
- Significant changes in sleep patterns
- Difficulty eating enough due to reduced appetite, particularly if it’s affecting your energy and mood
Your prescriber can adjust doses, stagger medications, or explore alternative treatments if needed. Don’t stop any medication without medical advice.
Frequently asked questions
Can Wegovy make anxiety worse?
Clinical trial data from the STEP programme found no increase in anxiety-related adverse events with semaglutide compared to placebo.1
However, individual responses vary, and side effects such as nausea or changes in eating patterns may temporarily affect how you feel. Monitor your symptoms and speak to your prescriber if you’re concerned.
Can I take Wegovy with sertraline?
Yes. There’s no known interaction between semaglutide and sertraline.
They’re metabolised through different pathways, so they don’t interfere with each other. The main consideration is that both can cause nausea, particularly in the early weeks.
Can I take Wegovy with propranolol?
Yes. There’s no known interaction between semaglutide and propranolol.
The main consideration is that both weight loss from Wegovy and propranolol can lower blood pressure, so your GP should monitor this as you lose weight.
Do I need to tell my prescriber about my anxiety medication before starting Wegovy?
Yes. Always tell your prescriber about all medications you’re taking.
While there are no known direct interactions, your prescriber needs a full picture to manage any overlapping side effects and stagger start dates if appropriate.
Will Wegovy affect how well my anxiety medication works?
Semaglutide slows gastric emptying, which could theoretically delay the absorption of oral medications.
However, most anxiety medications have a wide therapeutic window, meaning small changes in absorption timing are unlikely to affect their effectiveness.10
Can losing weight on Wegovy help reduce my anxiety?
It can for some people. If your anxiety is partly driven by body image concerns or weight-related health conditions, weight loss may help.
However, anxiety is a complex condition with many contributing factors, and weight loss alone isn’t a treatment for it.
Should I start Wegovy and an SSRI at the same time?
It’s generally better to stagger the start dates. Both Wegovy and SSRIs can cause nausea and gastrointestinal side effects in the first few weeks.
Starting them at the same time makes it harder to identify which medication is causing any problems.
How can I tell if a symptom is from Wegovy or my anxiety?
Timing can help. Wegovy side effects tend to be strongest in the first few days after each injection and improve over the week. Anxiety symptoms are usually more persistent and often have identifiable triggers.
Keeping a brief symptom diary for the first few weeks can help you and your prescriber distinguish between the two.
Are there any foods I should eat more of to help with anxiety on Wegovy?
Prioritise omega-3-rich foods like oily fish, protein sources containing tryptophan (turkey, eggs, salmon), and fibre-rich foods that support gut health.
These nutrients support serotonin production and microbiome diversity, both of which are linked to mood regulation.3,4
Does exercise help with anxiety while taking Wegovy?
Yes. Both aerobic exercise and resistance training have strong evidence for reducing anxiety symptoms.5,6
Starting with regular walks and gradually adding some resistance exercises as you feel ready is a practical approach.
Exercise also helps preserve muscle mass during weight loss.
What should I do if I feel more anxious after starting Wegovy?
Speak to your prescriber. Increased anxiety could be related to Wegovy’s side effects, changes in eating patterns, blood sugar fluctuations, or other factors.
Your prescriber can help determine the cause and adjust your treatment plan if needed. Don’t stop taking any medication without medical advice.
Take home message
You can take Wegovy if you have anxiety. There are no known direct interactions between semaglutide and common anxiety medications, including SSRIs, SNRIs, benzodiazepines, beta-blockers, and buspirone.10
The main practical consideration is the overlap of side effects, particularly nausea. Clinical trial data from the STEP programme suggest Wegovy doesn’t increase the risk of anxiety symptoms.1
Because some Wegovy side effects mimic anxiety symptoms, it’s worth keeping a symptom diary for the first few weeks.
Eating three balanced meals a day to avoid blood sugar fluctuations, limiting caffeine, and supporting gut health with fibre and fermented foods can all help.
Combining Wegovy with regular physical activity, a diet rich in omega-3s, protein, and complex carbohydrates, and psychological support where needed, supports both your weight loss and anxiety management.
Second Nature’s programme combines medication support with personalised nutrition and lifestyle guidance from registered dietitians and nutritionists.
The programme is built around a balanced plate model: half vegetables, quarter protein, quarter complex carbohydrates, plus a serving of healthy fat.
A peer-reviewed study published in JMIR Formative Research found that active subscribers on Second Nature’s semaglutide-supported programme lost an average of 19.1% of their body weight at 12 months, with 77.7% achieving at least 10% weight loss.8
Second Nature's Mounjaro and Wegovy programmes
Second Nature provides Mounjaro or Wegovy as part of our Mounjaro and Wegovy weight-loss programmes.
Why choose Second Nature over other medication providers, assuming you're eligible?
Because peace of mind matters.
We've had the privilege of working with the NHS for over eight years, helping people across the UK take meaningful steps toward a healthier, happier life.
Our programmes are designed to meet people where they are, whether that means support with weight loss through compassionate one-to-one health coaching, or access to the latest weight-loss medications (like Mounjaro and Wegovy) delivered alongside expert care from a multidisciplinary team of doctors, psychologists, dietitians, and personal trainers.
At the heart of everything we do is a simple belief: real, lasting change comes from building better habits, not relying on quick fixes. We're here to support that change every step of the way.
With over a decade of experience, thousands of lives changed, and a long-standing record of delivering programmes used by the NHS, we believe we're the UK's most trusted weight-loss programme.
We hope to offer you something invaluable: peace of mind, and the support you need to take that first step.
References
- Wadden, T.A. et al. (2024). Psychiatric safety of semaglutide for weight management in people without known major psychopathology: post hoc analysis of the STEP 1, 2, 3, and 5 trials. JAMA Internal Medicine, 184(11), 1329-1341.
- NHS Digital. (2024). Survey of mental health and wellbeing, England 2023-24: common mental health conditions.
- Bafkar, N. et al. (2024). Efficacy and safety of omega-3 fatty acids supplementation for anxiety symptoms: a systematic review and dose-response meta-analysis of randomized controlled trials. BMC Psychiatry, 24, 455.
- Foster, J.A. and McVey Neufeld, K.A. (2013). Gut-brain axis: how the microbiome influences anxiety and depression. Trends in Neurosciences, 36(5), 305-312.
- Banyard, H. et al. (2025). The effects of aerobic and resistance exercise on depression and anxiety: systematic review with meta-analysis. International Journal of Mental Health Nursing, 34(3), e70054.
- Gordon, B.R. et al. (2017). The effects of resistance exercise training on anxiety: a meta-analysis and meta-regression analysis of randomized controlled trials. Sports Medicine, 47(12), 2521-2532.
- Gariepy, G. et al. (2010). The association between obesity and anxiety disorders in the population: a systematic review and meta-analysis. International Journal of Obesity, 34(3), 407-419.
- Richards, R. et al. (2025). A remotely delivered, semaglutide-supported weight management program: 12-month outcomes from a retrospective service evaluation. JMIR Formative Research, 9(1), e72577.
- Lally, P. et al. (2010). How are habits formed: modelling habit formation in the real world. European Journal of Social Psychology, 40(6), 998-1009.
- Electronic Medicines Compendium. (2026). Wegovy 0.25 mg solution for injection in pre-filled pen: Summary of Product Characteristics.
- NICE. (2011, updated 2020). Generalised anxiety disorder and panic disorder in adults: management. CG113.