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Fibromyalgia SyndromeNCT07495943

Effects of 2-Aticyto Complex and D-Ribose on Pain and Clinical Course in Patients With Fibromyalgia

A study testing 2-Aticyto Complex and D-ribose Oral Supplement in people with Fibromyalgia Syndrome and Fibromyalgia, run by Haydarpasa Numune Training and Research Hospital at 5 sites in Turkey (Türkiye).

Not yet recruiting

Opening soon. The study is approved but enrolment has not started yet. Sites may already take enquiries.

Sites and contacts
Official record
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Trial summary

This multicenter, randomized, double-blind, placebo-controlled study will evaluate whether an oral supplement containing 2-Aticyto Complex and D-ribose (FibroThol), added to ongoing standard medical treatment, improves pain, symptoms, and clinical course in adults with fibromyalgia syndrome. Read more about this study

Who is it for?
Ages 18 to 65 years
Conditions the study is for
Fibromyalgia Syndrome, Fibromyalgia
What is being tested?
2-Aticyto Complex and D-ribose Oral Supplement
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
200 participants
Where
5 sitesTurkey (Türkiye)
Study dates
4 Oct 2026to 4 May 2027
Phase
Interventional
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 65 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Adults aged 18 to 65 years
  • Diagnosis of fibromyalgia syndrome according to the 2016 ACR criteria
  • Followed in a physical medicine and rehabilitation outpatient clinic for at least 1 year
  • Receiving pregabalin and/or duloxetine treatment for at least 3 months
  • Able to live independently in the community
  • Literate and able to record symptoms and responses
  • No cognitive dysfunction that would interfere with answering study questions
  • Able and willing to provide informed consent

Who cannot join

  • Rheumatologic disease
  • Renal failure
  • Hepatic failure
  • Cardiovascular disease
  • Hypoglycemia or diabetes mellitus
  • Any neurologic disease (such as stroke, spinal cord injury, multiple sclerosis, or Parkinson's disease)
Show all 13Show fewer
  • Known allergy or hypersensitivity to any active or excipient component of the study syrup
  • Use of any other dietary supplement or nutritional support product during the study period
  • Pregnancy or lactation
  • Active malignancy
  • Active infection
  • Severe psychiatric disease that may interfere with study participation or assessment
  • Refusal to participate or inability to provide informed consent

Trial locations and contacts

5 sites in 1 country. Contact the study team or a site near you to ask about taking part.

Kubra Neslihan Kurt Oktay, MD contact

+905352916609

drneslihankurt@gmail.com

5 sites in 1 country

Turkey (Türkiye)5 sites
  • University of Health Sciences, Haydarpasa Numune Training and Research Hospital, Department of Physical Medicine and Rehabilitation

    Istanbul, Istanbul, 34662

    Kubra Neslihan Kurt Oktay, MD, +905352916609, drneslihankurt@gmail.com

    Arzu Erbilici, MD

  • University of Health Sciences, Basaksehir Cam and Sakura City Hospital, Department of Physical Medicine and Rehabilitation

    Istanbul, 34480

    Fatih Bagcıer, MD, +905442429042, bagcier_42@hotmail.com

  • University of Health Sciences, Sultan Abdulhamid Han Training and Research Hospital, Department of Physical Medicine and Rehabilitation

    Istanbul, 34668

    Mustafa Hüseyin Temel, MD, +905342714872, mhuseyintemel@gmail.com

    Emre Ata, MD

  • Erenkoy Physical Therapy and Rehabilitation Hospital, Department of Physical Medicine and Rehabilitation

    Istanbul, 34732

    Sefa Kurt, MD, +905385159528, sefa.kurt@yahoo.com

  • University of Health Sciences, Fatih Sultan Mehmet Training and Research Hospital, Department of Physical Medicine and Rehabilitation

    Istanbul, 34752

    Ozge Gulsum Illeez, MD, +905326255684, ozgeilleez@gmail.com

Other trials in Turkey (Türkiye)

About this study

Official title: Effects of 2-Aticyto Complex and D-Ribose on Pain, Symptoms, and Clinical Course in Patients With Fibromyalgia Syndrome

This multicenter, randomized, double-blind, placebo-controlled study will evaluate whether an oral supplement containing 2-Aticyto Complex and D-ribose (FibroThol), added to ongoing standard medical treatment, improves pain, symptoms, and clinical course in adults with fibromyalgia syndrome. Eligible participants are adults aged 18 to 65 years who have had fibromyalgia for at least 1 year and have been receiving pregabalin and/or duloxetine for at least 3 months. Participants will be randomly assigned to receive either FibroThol or placebo, administered as 15 mL three times daily for 4 weeks, while continuing their existing treatment. Follow-up assessments will be performed at baseline, week 2, and week 4 using patient-reported symptom and function measures. The study aims to determine whether this supportive supplement provides additional benefit compared with placebo in patients with persistent symptoms despite standard therapy.

Read the detailed description

Fibromyalgia syndrome is a chronic condition associated with widespread pain, fatigue, sleep disturbance, and reduced quality of life. Although standard pharmacologic treatments such as pregabalin and duloxetine are commonly used, symptom control may remain incomplete in many patients. This study was designed to investigate whether adding a supplement containing 2-Aticyto Complex and D-ribose to ongoing standard treatment can improve clinical outcomes in adults with fibromyalgia syndrome.

This is a multicenter, randomized, double-blind, placebo-controlled clinical study. Adults aged 18 to 65 years with fibromyalgia syndrome, diagnosed according to the ACR 2016 criteria, followed for at least 1 year, and receiving pregabalin and/or duloxetine treatment for at least 3 months will be eligible for participation. Major exclusion criteria include rheumatologic disease, renal failure, hepatic failure, cardiovascular disease, diabetes or hypoglycemia, neurologic disease, use of other supplements, allergy to study product ingredients, inability to complete study procedures, or refusal to participate.

After eligibility assessment and informed consent, participants will be randomly assigned to one of two study groups: placebo plus ongoing standard treatment or FibroThol plus ongoing standard treatment. The study treatment will be administered orally at a dose of 15 mL three times daily for 4 weeks. Study visits and assessments will be performed at baseline, week 2, and week 4.

Outcome measures will include pain intensity, neuropathic pain, fibromyalgia-related functional status, fatigue, sleep quality, anxiety, and depression, assessed using validated clinical scales. Safety will be evaluated through adverse event monitoring during the study period.

A total of 200 participants will be enrolled, with 100 participants assigned to the FibroThol group and 100 participants assigned to the placebo group. The primary objective is to determine whether the addition of 2-Aticyto Complex and D-ribose to standard treatment provides additional benefit in reducing pain and improving symptoms and overall clinical course in patients with fibromyalgia syndrome.

Being tested
2-Aticyto Complex and D-ribose Oral Supplement, Placebo syrup
Keywords
Fibromyalgia, Fibromyalgia Syndrome, 2-Aticyto Complex, D-ribose, FibroThol, Dietary Supplement, Placebo-Controlled, Randomized, Double-Blind, Multicenter Study, Pregabalin, Duloxetine, Pain, Fatique, Sleep Quality, Depression, Anxiety, Quality of Life
Medical subject headings
Fibromyalgia, Pain, Sleep Initiation and Maintenance Disorders, Depression, Anxiety Disorders

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • 2-Aticyto Complex and D-ribose Oral SupplementDietary supplement

    An oral dietary supplement containing 2-Aticyto Complex and D-ribose (marketed as FibroThol). In this study, participants will receive 15 mL orally three times daily for 4 weeks in addition to ongoing standard treatment with pregabalin and/or duloxetine.

  • Placebo syrupOther

    A matching oral placebo syrup without active study ingredients. In this study, participants will receive 15 mL orally three times daily for 4 weeks in addition to ongoing standard treatment with pregabalin and/or duloxetine. The placebo contains deionized water, glycerol, sodium alginate, xanthan gum, steviol glycosides, raspberry flavor, pineapple flavor, strawberry flavor, and mint flavor.

Study groups in NCT07495943
Study groupRoleWhat they receive
Placebo Plus Standard TreatmentPlacebo comparatorParticipants will receive matching placebo orally at 15 mL three times daily for 4 weeks, in addition to their ongoing standard medical treatment with pregabalin and/or duloxetine.
Receives: Other: Placebo syrup
FibroThol Plus Standard TreatmentExperimentalParticipants will receive FibroThol, an oral supplement containing 2-Aticyto Complex and D-ribose, at 15 mL three times daily for 4 weeks, in addition to their ongoing standard medical treatment with pregabalin and/or duloxetine.
Receives: Dietary Supplement: 2-Aticyto Complex and D-ribose Oral Supplement

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change in Pain Intensity Measured by Numeric Rating Scale (NRS)

    Pain intensity will be assessed using the Numeric Rating Scale (NRS), an 11-point scale ranging from 0 to 10, where 0 indicates no pain and 10 indicates the worst pain imaginable. Higher scores indicate greater pain intensity. Change from baseline will be compared between groups.

    Measured: Baseline, Week 2, and Week 4

Secondary outcomes (7)
  1. Change in Neuropathic Pain Measured by DN4

    Neuropathic pain symptoms will be assessed using the Douleur Neuropathique 4 (DN4) questionnaire, with a total score range of 0 to 10. Higher scores indicate more neuropathic pain features, and a score of 4 or more suggests neuropathic pain. Change from baseline will be compared between groups.

    Measured: Baseline, Week 2, and Week 4

  2. Change in Fibromyalgia Impact Questionnaire Score

    Participation limitations will be assessed using the Fibromyalgia Participation Questionnaire, with transformed scale values ranging from 0 to 100. Higher scores indicate better participation and social functioning, so an increase from baseline reflects improvement.

    Measured: Baseline, Week 2, and Week 4

  3. Change in Fibromyalgia Participation Questionnaire Score

    Fatigue severity will be assessed using the Fatigue Severity Scale, a 9-item scale with a total score range of 9 to 63. Higher scores indicate greater fatigue severity. Change from baseline will be compared between groups.

    Measured: Baseline, Week 2, and Week 4

  4. Change in Fatigue Severity Scale (FSS) Score

    Participation limitations will be assessed using the Fibromyalgia Participation Questionnaire, with transformed scale values ranging from 0 to 100. Higher scores indicate better participation and social functioning, so an increase from baseline reflects improvement.

    Measured: Baseline, Week 2, and Week 4

  5. Change in Pittsburgh Sleep Quality Index (PSQI) Score

    Sleep quality will be assessed using the Pittsburgh Sleep Quality Index, with a global score range of 0 to 21. Higher scores indicate poorer sleep quality. Change from baseline will be compared between groups.

    Measured: Baseline, Week 2, and Week 4

  6. Change in Beck Depression Inventory Score

    Depressive symptoms will be assessed using the Beck Depression Inventory, a 21-item scale with a total score range of 0 to 63. Higher scores indicate more severe depressive symptoms. Change from baseline will be compared between groups.

    Measured: Baseline, Week 2, and Week 4

  7. Change in Beck Anxiety Inventory Score

    Anxiety symptoms will be assessed using the Beck Anxiety Inventory, a 21-item scale with a total score range of 0 to 63. Higher scores indicate more severe anxiety symptoms. Change from baseline will be compared between groups.

    Measured: Baseline, Week 2, and Week 4

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted27 Mar 2026
  2. Study start4 Oct 2026 (estimated)
  3. Primary completion4 May 2027 (estimated)
  4. Study completion4 May 2027 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
Participants will be assigned by block randomization in a 1:1 ratio to one of two parallel groups: placebo plus ongoing standard treatment or FibroThol plus ongoing standard treatment. Study treatment will be administered orally for 4 weeks in a multicenter setting.
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
200 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07495943
Sponsor's protocol ID
HNHAH-KAEK 2025/1
Status last verified
Sep 2026
First submitted
23 Mar 2026
Last updated
21 Sep 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No: Individual participant data will not be shared. Aggregate results will be reported in publications and trial registry updates.

Publications

  • Teitelbaum J, Jandrain J, McGrew R. Treatment of Chronic Fatigue Syndrome and Fibromyalgia with D-Ribose- An Open-label, Multicenter Study. The Open Pain Journal. 2012;5:32-37.

  • Kerget F, Kerget B, Aksakal A, Kocak AO. Can 2-Aticyto Complex be an Effective Agent for Recovery of The Symptoms and Enhancing Laboratory Parameters in COVID-19 Patients? European Journal of Medical and Health Sciences. 2021;3(2):35-39. doi:10.24018/ejmed.2021.3.2.745.

  • Teitelbaum JE, Johnson C, St Cyr J. The use of D-ribose in chronic fatigue syndrome and fibromyalgia: a pilot study. J Altern Complement Med. 2006 Nov;12(9):857-62. doi: 10.1089/acm.2006.12.857.

    PubMed 17109576

Questions about this trial

What is this clinical trial studying?

A study testing 2-Aticyto Complex and D-ribose Oral Supplement in people with Fibromyalgia Syndrome and Fibromyalgia, run by Haydarpasa Numune Training and Research Hospital at 5 sites in Turkey (Türkiye).

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 8 inclusion and 13 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: opening soon, as of the sponsor's last update on 21 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 5 sites in Turkey (Türkiye). Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Kubra Neslihan Kurt Oktay, MD (+905352916609, drneslihankurt@gmail.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change in Pain Intensity Measured by Numeric Rating Scale (NRS) (time frame: Baseline, Week 2, and Week 4). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT07495943, which also lists 3 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 21 Sep 2026; AzTrials last refreshed its copy on 7 Nov 2026.

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