Clinical trials
Adverse Effect clinical trials
Below are recruiting adverse effect clinical trials, each written for real people, not researchers. We’re tracking 77 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07767981Recruiting
Gut bacteria and side effects of precise radiation therapy
This study looks at how the bacteria in your gut might affect side effects from a precise type of radiation therapy called stereotactic radiosurgery. By collecting samples, researchers hope to find ways to reduce side effects in the future.
Chicago, IllinoisAges 18 years+ - NCT07810816Recruiting
Genetic testing for personalized pain relief after surgery
This study looks at how your genes affect your body's response to tramadol, a painkiller given through a pump after surgery. The goal is to see if your genetic makeup influences pain relief and side effects, which could help personalize pain treatment in the future.
Medellín, AntioquiaAges 18 years+ - NCT07057284Enrolling by invitation
Dentofacial effects of proton therapy for childhood head and neck cancer
This study looks at how proton beam therapy (a precise type of radiation) affects the teeth and face in children and teens who had head or neck cancer. The goal is to understand these long-term effects and help improve future care.
ManchesterAges 2–32 - NCT07379827Recruiting
A study on switching to KarXT for schizophrenia
This trial looks at how well KarXT works and what side effects it might have when people with schizophrenia switch to it from their current antipsychotic medication. It may be an option for those who have started KarXT recently or who plan to switch from their current treatment.
Bryant, ArkansasAges 18 years+ - NCT06982339Recruiting
Beat the Heat Boston study
This study provides free air conditioning units to older adults in certain Boston neighborhoods who don't have AC. It aims to see if cooling homes can help with heat-related health risks for people with certain chronic conditions.
Boston, MassachusettsAges 55–95 - NCT05358535RecruitingPhase 3
Testing two common anesthesia options during endoscopy
This trial compares two IV anesthesia medicines (propofol and etomidate) during endoscopic procedures. It may help your care team choose the safest, most effective anesthesia approach for patients who need anesthesia for endoscopy.
Dallas, TexasAges 18 years+ - NCT06642428Recruiting
Vitamin D for breast cancer treatment before surgery
This trial tests whether taking vitamin D pills during chemotherapy or targeted therapy (before breast cancer surgery) can improve how well the treatment works and reduce side effects. It is for women with low vitamin D levels.
Xining, QinghaiAges 18–80 - NCT05192876Recruiting
Review of outcomes and side effects during radiation treatment
This study collects information about results and side effects from people receiving radiation therapy at a specific hospital. It may help improve how radiation treatment is planned and monitored in the future.
Winterthur, Canton of ZurichAges 16–105 - NCT07178600Recruiting
Eye drops for surgery: side effects study
This study looks at how patients react to a common eye drop used before surgery. It helps understand side effects and who might be affected.
Mexico City, Mexico CiyAges 18 years+ - NCT05800535Recruiting
Screening for muscle loss and thinking changes after cancer
This study looks at how common muscle weakness (sarcopenia) and thinking or memory changes (often called “chemobrain”) are in people after cancer treatment. It may help teams understand what support could be most helpful after chemotherapy.
Pierre-BéniteAges 18–74 - NCT06614647Recruiting
Digital follow-up for colorectal cancer survivors
This trial tests a smartphone-based follow-up program for people who have been treated for early-stage colorectal cancer. The goal is to see if a digital, need-based care guide can replace standard follow-up visits.
Herning, Central JutlandAges 18 years+ - NCT05702944RecruitingPhase 4
Skipping pre-surgery blood pressure medicine for certain adrenal tumors
This trial studies whether it is safe to skip a specific pre-surgery blood pressure medicine (alpha-blocker) for people with normal blood pressure who have a pheochromocytoma or paraganglioma in one adrenal gland. It aims to see if fewer pre-op meds can still prevent risky blood pressure surges during surgery.
SeoulAges 19–70 - NCT05698576Recruiting
Laser treatment through the skin for men with prostate cancer
This trial tests a laser procedure done through the skin between the scrotum and anus, guided by MRI and ultrasound, for men with certain prostate cancer types. It aims to heat and treat prostate cancer while checking safety and outcomes over follow-up visits.
Hialeah, FloridaAges 50–80 - NCT07795398RecruitingPhase 4
Stopping aspirin in older adults with stable heart disease
This trial tests whether older adults with stable heart disease can safely stop taking daily aspirin after two years without increasing the risk of heart attack or stroke. It may help reduce the side effects of long-term aspirin use.
CopenhagenAges 65 years+ - NCT07739784Recruiting
Personality and side effects of glaucoma eye drops
This study looks at whether your personality affects how you experience side effects from glaucoma eye drops. The results may help doctors choose the best treatment for you and provide more personalized care.
Montreal, QuebecAges 18 years+ - NCT07729449Recruiting
Predicting headache after cesarean using ultrasound and oxygen monitoring
This trial measures how well two monitoring tools (optic nerve ultrasound and brain oxygen levels) can predict headache after a planned cesarean. It may help find better ways to prevent post-dural puncture headache.
Ordu, AltinorduAges 18–40 - NCT07666100Recruiting
Study of medication side effects in a periodontology clinic
This study looks at side effects from medications prescribed in a gum disease clinic. It aims to understand what types of side effects patients experience, which can help doctors choose safer medicines.
SivasAges 16 years+ - NCT07461116Recruiting
Side effects of ATG/ALG treatment for aplastic anemia
This study looks at the side effects of a medicine called ATG or ALG, which is given to calm the immune system in people with aplastic anemia. It may help doctors better understand and manage these side effects.
TianjinAges Any age - NCT06699901Recruiting
Antibiotic levels after major blood transfusion
This study measures how antibiotics work in patients who have had a massive blood transfusion. It aims to ensure the right dose of common antibiotics is being given.
Aurora, ColoradoAges 18 years+ - NCT06576596Recruiting
Oxygen during breathing tube placement in children
This study tests a method to keep children breathing easily while their airway is being prepared for surgery. It may help children who are 0-6 years old and having planned surgery under general anesthesia.
Heidelberg, Baden-WurttembergAges birth–6 years - NCT06541691Recruiting
Aspirin for heart disease patients in polluted air
This study tests if different types of aspirin (coated or chewable) and a special schedule can help people with heart or blood vessel disease when they are exposed to air pollution. If you live in Tehran and have stable heart disease, you may be able to join.
Tehran, Tehran ProvinceAges 18 years+ - NCT07264309Recruiting
Pain relief options for women in early labor
This trial compares two pain relief methods during the first stage of labor: a combination of tramadol and paracetamol given through an IV, versus pethidine given as a shot. The goal is to see which works better and has fewer side effects.
AfulaAges Any age - NCT07253987Recruiting
Cancer Survivors Program for Breast or Prostate Cancer
This study offers a program to help people who have completed their main treatment for early-stage breast or prostate cancer. It focuses on follow-up and support during survivorship, and you are still eligible if you are on certain maintenance therapies like hormone therapy.
BrnoAges 18 years+ - NCT07210892Recruiting
Spinal anesthesia needle angles study
This study looks at the best angle for inserting the needle during spinal anesthesia. It may help doctors find a more comfortable and effective way to give the numbing medicine.
Barcelona, BarcelonaAges Any age
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Common questions
- Are there clinical trials for adverse effect?
- Yes. Clin2 currently lists 77 recruiting adverse effect studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a adverse effect trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a adverse effect trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.