Phase 3 Peripheral Neuropathy Trial, Recruiting
Who may be able to join
AI generated eligibility summary. Written by an AI model from the official source data and checked on a sample basis. It can contain mistakes, so confirm anything important against the original source. How we use AI
Who might be able to join this trial:
- People of any gender aged between 18 and 75 years old
- People who are able to understand the study, agree to take part, complete the required procedures, and attend all scheduled visits by signing an approved consent form
- People who have been diagnosed with nerve pain caused either by diabetes (type 1 or 2) — with blood sugar levels within a certain range, nerve pain symptoms lasting at least 6 months, and stable diabetes medication for at least 30 days — or by shingles (postherpetic neuralgia), with pain continuing for at least 3 months after the shingles rash appeared
- People whose nerve pain rates at 4 or higher on a pain scale of 0 (no pain) to 10 (worst possible pain), confirmed by recording daily pain scores in a diary over 7 days during the screening period
- People who cannot become pregnant (such as post-menopausal women or those who have had surgical sterilisation, or men who have had a vasectomy), OR people who could become pregnant and agree to use a reliable form of contraception during the study
Who may not be able to join:
- People who have other sources of pain unrelated to diabetic nerve damage or shingles nerve pain that could affect pain assessments
- People who have a skin condition in the affected area that could interfere with sensation testing or pain evaluation
- People who have previously had nerve surgery to treat their neuropathy
- People currently using, or who have used within the past 7 days, certain medications including nerve block treatments, opioids, benzodiazepines, muscle relaxants, capsaicin, local anaesthetics, memantine, certain anti-epileptic drugs (such as gabapentin, carbamazepine, or valproic acid), certain antidepressants, or medications that may be toxic to nerves
- People who have previously had no response to pregabalin or gabapentin, or who have had an allergic reaction to either of those medications
- People with a history of cancer in the past 2 years (other than a specific type of skin cancer called basal cell carcinoma), neurological disease, unstable heart disease, certain psychiatric conditions (particularly thoughts of suicide), or infection with hepatitis B, hepatitis C, or HIV
- People with current abnormal liver enzyme results or reduced kidney function based on recent laboratory tests
- People with a history of illicit drug use in the past 2 years
- People with a history of heavy alcohol use in the past 2 years (above defined daily and weekly limits, which differ for men and women — confirm with trial site)
- People who are currently pregnant, breastfeeding, or planning to become pregnant during the study
- People who have taken part in another clinical trial within the past 12 months, unless the trial investigator determines there may be a direct benefit to the person
- People who have any other condition that the investigator believes would prevent safe participation in the study
Important: Always verify eligibility with the trial site directly before applying.
Based on publicly available eligibility criteria from ClinicalTrials.gov. Verify directly with the trial site before acting. This is not medical advice.
Contact this trial
Principal Investigator: Mariana Ferreira, Sports Nutrition, A2Z CLINICAL - CENTRO DE PESQUISA CLÍNICA, Valinhos, São Paulo 13271130
Phone: 55-11-97677-6726
Contact details sourced from ClinicalTrials.gov. Verify directly with the trial site before attending.
GP referral letter
Print a one-page summary to share with your doctor.
Trial details
Where this trial is recruiting
Primary endpoints
Difference in the mean pain intensity score 16 weeks after the start of treatment, compared to baseline
Can't join this trial?
Data last synced from ClinicalTrials.gov: 28 July 2026. Trial status can change. Always verify current status directly with the trial site before making any decision.