Effects · health adverse
Headache
Painful sensations in the head of various types (pressure, throbbing, bursting), intensity, and location, occurring as a side effect.
- Supplements
- 186
- Practices
- 163
- Habits
- 89
How we rate evidence
Probability — how likely the effect is to show up
- Very high
- High
- Medium
- Low
Evidence — where the data comes from
- Scientific Meta-analyses and randomized trials
- Clinical Clinical trials and practice
- Animal research Animal studies
- People reports User reports and anecdotes
- Theoretical Mechanistic reasoning, not yet tested
Reported as a side effect of (438)
Probability Very high 6 High 39 Medium 103 Low 290
Evidence Clinical 107 People reports 310 Theoretical 21
- 5-HTP Supplements LowPeople reports
- 9-Me-BC Supplements LowPeople reports
- Acetyl-L-Carnitine (ALCAR) Supplements LowPeople reports
- Adrafinil Supplements HighTheoretical
- Agmatine Sulfate Supplements LowPeople reports
- Alpha-GPC Supplements MediumClinical
- Alpha-Lipoic Acid Supplements LowPeople reports
- Amanita Muscaria Supplements MediumPeople reports
- Amanita Pantherina Supplements MediumPeople reports
- Amanita Regalis Supplements MediumPeople reports
- American Ginseng Supplements LowPeople reports
- Amylase Supplements LowPeople reports
- Anastrozole Supplements MediumTheoretical
- Andrographis Supplements LowPeople reports
- Aniracetam Supplements LowPeople reports
- Apigenin Supplements LowPeople reports
- Arginine Supplements LowPeople reports
- Artichoke Extract Supplements LowPeople reports
- Ashwagandha Supplements LowPeople reports
- BCAA Supplements LowPeople reports
- Berberine Supplements LowPeople reports
- Beta-Sitosterol Supplements LowPeople reports
- Betaine (TMG) Supplements LowPeople reports
- Black Seed Oil Supplements LowPeople reports
- Blueberry Extract Supplements LowPeople reports
- Boron Supplements LowPeople reports
- BPC-157 Supplements LowPeople reports
- Bromantane Supplements MediumPeople reports
- Bromelain Supplements LowPeople reports
- Butyrate Supplements LowPeople reports
- Cabergoline Supplements MediumClinical
- Caffeine Supplements MediumTheoretical
- Calcium Alpha-Ketoglutarate Supplements LowPeople reports
- Calcium D-Glucarate Supplements LowPeople reports
- CBD Supplements LowPeople reports
- CDP-Choline Supplements LowPeople reports
- Cerebrolysin Supplements LowClinical
- Chlorella Supplements LowPeople reports
- Chondroitin Sulfate Supplements LowPeople reports
- Chromium Supplements LowPeople reports
- Cissus Quadrangularis Supplements LowPeople reports
- Citrulline Supplements LowPeople reports
- Conjugated Linoleic Acid (CLA) Supplements LowPeople reports
- Clomiphene Supplements LowClinical
- Collagen Peptides Supplements LowPeople reports
- Coluracetam Supplements MediumPeople reports
- Coenzyme Q10 Supplements LowPeople reports
- Cortexin Supplements LowPeople reports
- Creatine Supplements LowPeople reports
- Deglycyrrhizinated Licorice (DGL) Supplements LowPeople reports
- Dihexa Supplements LowPeople reports
- Diindolylmethane (DIM) Supplements LowPeople reports
- Diosmin Supplements LowClinical
- DL-Phenylalanine (DLPA) Supplements LowPeople reports
- DMAE Supplements LowPeople reports
- Ecdysterone Supplements LowPeople reports
- Echinacea Supplements LowPeople reports
- Eleuthero Supplements LowPeople reports
- Ethanol (alcohol) Supplements HighTheoretical
- Eutropoflavin Supplements LowPeople reports
- Evening Primrose Oil Supplements LowPeople reports
- Fasoracetam Supplements MediumPeople reports
- Fenugreek Extract Supplements LowPeople reports
- Feverfew Supplements LowPeople reports
- Fisetin Supplements LowPeople reports
- Ginkgo Biloba Supplements LowClinical
- Glucosamine Supplements LowPeople reports
- Glutamine Supplements LowPeople reports
- Glycine Supplements LowPeople reports
- Grape Seed Extract Supplements LowPeople reports
- Green Tea Extract Supplements LowPeople reports
- Guarana Supplements LowTheoretical
- Gymnema Sylvestre Supplements LowPeople reports
- Gynostemma Pentaphyllum Supplements LowPeople reports
- Hesperidin Supplements LowPeople reports
- Histidine Supplements LowPeople reports
- Holy Basil (Tulsi) Supplements LowPeople reports
- Hops Supplements LowPeople reports
- Horny Goat Weed Supplements LowPeople reports
- Horse Chestnut Extract Supplements LowClinical
- Human Chorionic Gonadotropin (hCG) Supplements LowClinical
- Huperzine A Supplements MediumTheoretical
- Indole-3-Carbinol (I3C) Supplements LowPeople reports
- Ibutamoren MK 677 Supplements LowPeople reports
- IDRA-21 Supplements LowPeople reports
- Inosine Supplements LowClinical
- Inositol Supplements LowPeople reports
- Iodine Supplements LowPeople reports
- J147 Supplements LowPeople reports
- Jujube Seed Extract Supplements LowPeople reports
- Kava Kava Supplements LowPeople reports
- L-Carnitine Supplements LowPeople reports
- L-Theanine Supplements LowPeople reports
- Lavender Extract Supplements LowPeople reports
- Lecithin Supplements LowPeople reports
- Lemon Balm Supplements LowPeople reports
- Ligandrol LGD-4033 Supplements LowPeople reports
- Lion's Mane Supplements LowPeople reports
- Maca Root Supplements LowPeople reports
- Magnesium Supplements LowPeople reports
- Magnolia Bark Extract Supplements LowPeople reports
- Marshmallow Root Supplements LowPeople reports
- Melatonin Supplements LowClinical
- Memantine Supplements MediumTheoretical
- Methionine Supplements LowClinical
- Methylene Blue Supplements LowPeople reports
- Milk Thistle Supplements LowPeople reports
- Modafinil Supplements HighTheoretical
- MSM Supplements LowPeople reports
- Mucuna Pruriens (Velvet Bean) Supplements LowPeople reports
- N-Acetylcysteine (NAC) Supplements LowPeople reports
- N-Acetyl-L-Tyrosine (NALT) Supplements LowPeople reports
- Nattokinase Supplements LowPeople reports
- Nettle Root Supplements LowPeople reports
- Nicotinamide Mononucleotide (NMN) Supplements LowPeople reports
- Nicotine Supplements MediumTheoretical
- Noopept Supplements HighPeople reports
- NSI-189 Supplements LowPeople reports
- Olive Leaf Extract Supplements LowPeople reports
- Omega-3 Supplements LowPeople reports
- Ornithine Supplements LowPeople reports
- Oxiracetam Supplements HighPeople reports
- Palmitoylethanolamide (PEA) Supplements LowPeople reports
- Panax Ginseng Supplements LowClinical
- Passionflower Supplements LowPeople reports
- Pelargonium sidoides Supplements LowClinical
- Phenylalanine Supplements LowPeople reports
- Phenylpiracetam (Phenotropil) Supplements MediumPeople reports
- Phosphatidylcholine (PC) Supplements LowClinical
- Phosphatidylserine (PS) Supplements LowPeople reports
- Picamilon Supplements LowClinical
- Piracetam Supplements HighTheoretical
- Polygala Tenuifolia Supplements LowPeople reports
- PQQ Supplements LowPeople reports
- Pramiracetam Supplements MediumPeople reports
- Pregnenolone Supplements LowPeople reports
- PRL-8-53 Supplements LowPeople reports
- Probiotics Supplements LowPeople reports
- Propranolol Supplements LowClinical
- Protein Supplements LowPeople reports
- Pterostilbene Supplements LowPeople reports
- Pycnogenol Supplements LowClinical
- Pygeum africanum (Bark) Supplements LowPeople reports
- Quercetin Supplements LowPeople reports
- Red Clover Supplements LowPeople reports
- Red Yeast Rice Supplements LowPeople reports
- Resveratrol Supplements LowPeople reports
- Rhodiola Rosea Supplements LowPeople reports
- Rosemary Extract Supplements LowPeople reports
- Rutin Supplements LowPeople reports
- Saffron Extract Supplements LowPeople reports
- SAM-e Supplements LowClinical
- Saw Palmetto Supplements LowClinical
- Schisandra Supplements MediumPeople reports
- Selank Supplements LowPeople reports
- Selegiline Supplements LowClinical
- Semax Supplements LowPeople reports
- Serine Supplements LowPeople reports
- Serrapeptase Supplements LowPeople reports
- Shilajit Supplements LowPeople reports
- Spirulina Supplements LowPeople reports
- St. John's Wort Supplements LowClinical
- Sulbutiamine Supplements LowPeople reports
- Sulforaphane Supplements LowPeople reports
- Sunifiram Supplements MediumPeople reports
- Tadalafil (Cialis) Supplements HighTheoretical
- Tauroursodeoxycholic acid (TUDCA) Supplements LowPeople reports
- TB-500 (Thymosin Beta-4 Acetate) Supplements LowPeople reports
- Theobromine Supplements LowPeople reports
- Tongkat Ali Supplements LowPeople reports
- Tribulus Terrestris Supplements LowPeople reports
- Tryptophan Supplements LowPeople reports
- Tyrosine Supplements LowPeople reports
- Unifiram Supplements MediumPeople reports
- Uridine Supplements LowPeople reports
- Valerian Root Supplements LowPeople reports
- Vinpocetine Supplements LowClinical
- Vitamin A Supplements LowTheoretical
- Vitamin B1 Supplements LowPeople reports
- Vitamin B12 Supplements LowPeople reports
- Vitamin B3 Supplements LowPeople reports
- Vitamin D Supplements LowTheoretical
- Vitamin E Supplements LowPeople reports
- Vitex Agnus-Castus Supplements LowClinical
- Yohimbine Supplements MediumPeople reports
- Zinc Supplements LowPeople reports
- 5Rhythms Dance Practices MediumClinical
- Acceptance and Commitment Therapy Practices LowPeople reports
- Active Music Making Practices LowPeople reports
- Acupuncture Practices LowClinical
- Alternate Day Fasting Practices MediumClinical
- Alternate Nostril Breathing Practices LowPeople reports
- Animal Flow Practices LowPeople reports
- Anusara Yoga Practices LowPeople reports
- Aromatherapy Practices LowPeople reports
- Art Journaling / Sketching Practices MediumClinical
- Professional Art Therapy Practices MediumPeople reports
- Ashtanga Yoga Practices LowPeople reports
- Balance Training Practices LowPeople reports
- Ballet Fitness Practices LowPeople reports
- Bedtime Ritual Practices LowClinical
- Belly Dance Practices LowPeople reports
- Bhakti Yoga Practices LowPeople reports
- Bhastrika Pranayama Practices MediumClinical
- Bikram Yoga Practices MediumPeople reports
- Binaural Beats Practices MediumPeople reports
- Biodanza Practices LowPeople reports
- Blue Light Blocking Glasses Practices LowPeople reports
- Box Breathing Practices LowPeople reports
- Cognitive Training / Brain Games Practices HighClinical
- 4-7-8 Breathing Technique Practices LowPeople reports
- Brisk Walking Practices LowPeople reports
- Bullet Journal Practices LowClinical
- Buteyko Method Breathing Practices LowPeople reports
- Calisthenics Practices LowPeople reports
- Carb Cycling Practices MediumPeople reports
- Cognitive Behavioral Therapy Practices LowPeople reports
- Chiropractic Practices MediumClinical
- Clay Sculpting / Modeling Practices MediumPeople reports
- Coherent Breathing Practices LowPeople reports
- Cold Shower Practices LowPeople reports
- Cold Water Face Plunge Practices HighClinical
- Consistent Sleep Schedule Practices LowPeople reports
- Contact Improvisation Practices LowPeople reports
- Contemporary Dance Practices LowPeople reports
- Contrast Shower Practices LowPeople reports
- CrossFit Practices LowPeople reports
- Cryotherapy Chamber / Whole Body Cryotherapy Practices LowPeople reports
- Cryotherapy Facial Practices LowPeople reports
- Self-Cupping Massage (Silicone) Practices LowPeople reports
- Cycling Practices MediumPeople reports
- Dance/Movement Therapy Practices MediumClinical
- DASH Diet Practices LowPeople reports
- Dawn Simulation Alarm Clock Practices LowPeople reports
- Dialectical Behavior Therapy Practices MediumPeople reports
- Deep Tissue Massage Practices LowPeople reports
- Diaphragmatic Breathing Practices LowPeople reports
- Digital Art Creation Practices HighClinical
- Drumming Circle Practices LowPeople reports
- Ecstatic Dance Practices LowPeople reports
- EEG Neurofeedback Practices MediumClinical
- Elimination Diet Practices HighPeople reports
- Eye Movement Desensitization and Reprocessing Practices MediumClinical
- Energizing Music Listening Practices LowPeople reports
- Existential Therapy Practices LowPeople reports
- Expressive Writing Practices LowPeople reports
- Face Icing / Cryo Rollers Practices LowPeople reports
- Family Therapy Practices LowPeople reports
- Knitting / Fiber Arts Practices MediumPeople reports
- Finnish Sauna Practices MediumClinical
- Fasting Mimicking Diet Practices HighClinical
- Focused Attention Meditation Practices LowPeople reports
- Detailed Food Diary Practices LowPeople reports
- Self Foot Reflexology Practices LowPeople reports
- Free / Intuitive Dance Practices MediumPeople reports
- Functional Training Practices LowPeople reports
- Goal Setting Journal Practices LowClinical
- Group Therapy Practices MediumPeople reports
- Guided Imagery Practices LowPeople reports
- Hatha Yoga Practices LowPeople reports
- Herbal Steam Bath Practices MediumPeople reports
- Herbalism / Phytotherapy Practices MediumPeople reports
- High-Intensity Interval Training (HIIT) Practices MediumPeople reports
- Hiking Practices MediumPeople reports
- Holotropic Breathwork Practices MediumClinical
- Hot Bath Practices LowPeople reports
- Hot Stone Massage Practices LowPeople reports
- Hydration with Electrolytes Practices LowPeople reports
- Ice Bath / Cold Plunge Practices LowPeople reports
- Ice Packs / Cold Compresses Practices LowPeople reports
- High-Fiber and Vegetable Diet Practices LowPeople reports
- Infrared Sauna Practices LowPeople reports
- Integral Yoga Practices LowPeople reports
- Intermittent Calorie Restriction Practices HighClinical
- Interpersonal Therapy Practices LowClinical
- Intuitive Painting / Drawing Practices LowPeople reports
- Iyengar Yoga Practices LowPeople reports
- Jivamukti Yoga Practices LowPeople reports
- Jnana Yoga Practices LowPeople reports
- Running / Jogging Practices MediumClinical
- Juice Fasting Practices HighClinical
- Kapalabhati Pranayama Practices LowPeople reports
- Ketogenic Diet Practices HighClinical
- Kettlebell Training Practices LowPeople reports
- Kripalu Yoga Practices LowPeople reports
- Kriya Yoga Practices LowClinical
- Kundalini Yoga Practices MediumPeople reports
- Lunar Cycle Syncing Practices LowTheoretical
- Lymphatic Drainage Massage Practices LowPeople reports
- Mandala Coloring / Anti-Stress Coloring Practices LowPeople reports
- Mantra Meditation Practices LowPeople reports
- Mindful Photography Practices LowPeople reports
- Morning Bright Light / Sunlight Exposure Practices MediumClinical
- Moxibustion Practices LowPeople reports
- Professional Music Therapy Practices LowPeople reports
- Manual Myofascial Release Practices MediumPeople reports
- Nature Sounds Listening Practices LowPeople reports
- Naturopathy Practices MediumPeople reports
- Origami Practices MediumClinical
- Osteopathy Practices LowClinical
- Periodic 24-hour Fasting Practices HighClinical
- Pilates Practices LowPeople reports
- Smart Posture Correctors Practices LowPeople reports
- Power Nap Practices MediumClinical
- Power Yoga Practices LowPeople reports
- Prenatal Yoga Practices LowPeople reports
- Psychodynamic Therapy Practices LowPeople reports
- Pursed-Lip Breathing Practices LowPeople reports
- Raja Yoga Practices LowPeople reports
- Rebirthing Breathwork Practices MediumClinical
- Reducing Sugar and Processed Foods Practices MediumClinical
- Reflexology Practices LowPeople reports
- Restorative Yoga Practices LowPeople reports
- Indoor Rowing Practices MediumClinical
- SAD Lamp Light Therapy Practices MediumClinical
- Scalp Massage Practices LowPeople reports
- Scrapbooking Practices MediumClinical
- Seed Cycling Practices LowPeople reports
- Shiatsu Massage Practices LowPeople reports
- Singing Bowls Session Practices LowPeople reports
- Singing / Choir Practices LowPeople reports
- Sivananda Yoga Practices MediumPeople reports
- Social Dancing Practices LowPeople reports
- White / Pink Noise for Sleep Practices LowPeople reports
- Sound Meditation Practices LowPeople reports
- Sports Massage Practices LowPeople reports
- Steam Room / Hammam Practices MediumPeople reports
- Strength Training Practices MediumClinical
- Swedish Massage Practices LowPeople reports
- Swimming Practices MediumPeople reports
- Tai Chi Practices LowPeople reports
- Tantra Yoga Practices LowPeople reports
- Transcranial Brain Stimulation Practices HighTheoretical
- Thai Massage Practices LowPeople reports
- Trail Running Practices HighPeople reports
- Transcendental Meditation Practices LowPeople reports
- Time-Restricted Eating 14/10 Practices MediumPeople reports
- Time-Restricted Eating 16/8 Practices HighClinical
- Trigger Point Therapy Practices LowPeople reports
- UV Sanitization Practices LowPeople reports
- Values Clarification Journal Practices LowPeople reports
- Vinyasa Yoga Practices LowPeople reports
- Vipassana Meditation Practices MediumPeople reports
- Visualization Meditation Practices LowPeople reports
- Warm Foot Soak Practices LowPeople reports
- Prolonged Water Fasting Practices Very highClinical
- Wim Hof Method Breathing Practices LowPeople reports
- Zazen Meditation Practices LowPeople reports
- Zumba Practices MediumClinical
- Alcohol Consumption Habits Very highTheoretical
- Avoid Processed Foods Habits LowPeople reports
- Avoid Sugar Habits HighPeople reports
- Binge Eating Episodes Habits MediumPeople reports
- Binge-Watching TV Shows for Hours Habits HighClinical
- Blaming Others for Personal Problems Habits MediumClinical
- Suppressing Emotions Habits HighClinical
- Brain Training Habits MediumClinical
- Breathwork Habits MediumTheoretical
- Cardiovascular Exercise Habits MediumPeople reports
- Catastrophizing (Assuming the Worst) Habits MediumClinical
- Chronic Complaining Habits MediumClinical
- Cigarette Smoking Habits HighClinical
- Cold Exposure Habits MediumClinical
- Compulsive Online Shopping Habits HighClinical
- Compulsively Checking Phone Notifications Habits MediumClinical
- Consistent Sleep Schedule Habits MediumClinical
- Consume Probiotics Habits LowPeople reports
- Creative Expression Habits MediumClinical
- People-Pleasing to Your Own Detriment Habits HighClinical
- Digital Detox Habits MediumPeople reports
- Doomscrolling (Consuming Negative News) Habits MediumClinical
- Drug Use Habits HighClinical
- Avoiding Difficult Emotions Habits MediumTheoretical
- Emotional Eating Habits LowPeople reports
- Energy Drink Consumption Habits HighClinical
- Engaging in Conflict Habits MediumPeople reports
- Engaging in Negative Gossip Habits MediumClinical
- Excessive Caffeine Intake Habits Very highTheoretical
- Excessive Video Gaming Habits MediumClinical
- Excessive Pornography Consumption Habits MediumPeople reports
- Excessive Social Media Use Habits HighClinical
- Excessive Sugar Consumption Habits MediumPeople reports
- Excessive Worrying Habits HighClinical
- Fast Food Consumption Habits LowPeople reports
- Get Fresh Air Habits LowPeople reports
- Heat Exposure (Sauna/Steam) Habits LowClinical
- High-Intensity Interval Training (HIIT) Habits MediumPeople reports
- Hot Salt Baths Habits MediumPeople reports
- Napping Too Long or Late in the Day Habits MediumClinical
- Inhalant Abuse Habits Very highPeople reports
- Insufficient Sleep Habits HighPeople reports
- Intermittent Fasting Habits MediumPeople reports
- Irregular Sleep-Wake Schedule Habits HighClinical
- Caffeine Consumption Late in the Day Habits LowPeople reports
- Learn New Things Habits MediumPeople reports
- Maladaptive Perfectionism Habits HighClinical
- Manage Calorie Intake Habits MediumPeople reports
- Meditation Habits LowPeople reports
- Mindless Scrolling on Devices Habits HighClinical
- Mindless Snacking Habits LowPeople reports
- Morning Exercise Habits LowClinical
- Morning Sun Exposure Habits LowClinical
- Music Practice Habits MediumPeople reports
- Nature Walks Habits LowPeople reports
- Engaging in Negative Self-Talk Habits HighClinical
- Not eating enough Habits MediumPeople reports
- Comparing Self Negatively to Others Online Habits LowPeople reports
- Chronic Oversleeping Habits MediumClinical
- Plant Intake Habits LowPeople reports
- Maintaining Poor Posture Habits MediumTheoretical
- Practice Mindfulness Habits LowPeople reports
- Chronic Procrastination Habits MediumClinical
- Prolonged Sitting Habits HighPeople reports
- Reading Habits MediumClinical
- Reckless Driving Habits MediumClinical
- Recreational Sports Habits LowPeople reports
- Red Light Therapy Habits LowPeople reports
- Revenge Bedtime Procrastination Habits MediumClinical
- Ruminating on Past Mistakes Habits MediumClinical
- Using Screens in Bed Habits HighClinical
- Seeking Constant External Validation Habits LowClinical
- Engaging in Self-Sabotaging Behaviors Habits Very highPeople reports
- Compulsive Skin Picking Habits MediumClinical
- Skipping Rest Breaks During Work Habits HighClinical
- Using a Sleep Mask Habits LowPeople reports
- Spend Time in Nature Habits LowPeople reports
- Stay Hydrated Habits LowClinical
- Strength Training Habits MediumClinical
- Poor Financial Management Habits MediumPeople reports
- Teeth Grinding (Bruxism) Habits HighTheoretical
- Unrealistic Expectations of Self Habits MediumClinical
- Using BioMaxing Life App Habits MediumClinical
- Vagus Nerve Stimulation Habits HighClinical
- Vaping or E-Cigarette Use Habits MediumClinical
- Vibration Plate Therapy Habits LowPeople reports
- Evening Wind-Down Routine Habits LowPeople reports
- Working Excessive Hours Habits Very highClinical
- Yoga Practice Habits MediumClinical
Mitigated by (11)
- 9-Me-BC Supplements People reports
- Caffeine Supplements Theoretical
- Feverfew Supplements Clinical
- Green Tea Extract Supplements Theoretical
- Guarana Supplements Theoretical
- Nicotine Supplements Theoretical
- Picamilon Supplements People reports
- Propranolol Supplements Clinical
- St. John's Wort Supplements People reports
- Theobromine Supplements People reports
- Unifiram Supplements People reports