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Tramadol & Ultram Pill Identifier: Traken, Mitidol & Citra 100mg Tablet Markings & Blister Verification

A visual identification and safety guide for authentic tramadol formulations, detailing imprint codes, tablet colors, blister strip security, and counterfeit prevention.

PHARMACEUTICAL IDENTIFIER

CLINICAL PHARMACOLOGY REVIEW GROUP

Medically reviewed by: Senior Compounding & Quality Assurance Pharmacist (RPh, BCPS)  •  Updated: October 2026  •  Reading time: 18 min read


Evidence-based clinical monograph adhering to FDA CDER and AGS Beers Criteria dispensing guidelines.

EXECUTIVE CLINICAL SUMMARY

Authentic Tramadol Hydrochloride 100mg and 50mg tablets are manufactured to strict pharmacopeial standards across global pharmaceutical facilities. In this clinical guide, our pharmacy specialists review the physical markings, tablet geometries, scored debossments, and tamper-evident blister packaging for major authorized brand and generic formulations—including Traken 100mg, Mitidol 100mg, Citra 100mg, and standard US generic imprints (such as 377, AN 627, and Ultram 06 59).

01. Visual tablet characteristics: Shape, scoring, color, and coating standards

Authentic pharmaceutical tramadol tablets exhibit crisp edges, uniform color distribution, and distinct debossed imprints. Film coatings prevent bitter gastric dissolution and protect against crumbling during transport.

BRAND / GENERICSTRENGTHCOLOR & SHAPEIMPRINT MARKINGSPACKAGING FORMAT
Tramadol Traken100mgWhite, round, biconvexDeep score line / smooth reverseAluminium push-through blister
Tramadol Mitidol100mgWhite to off-white, roundUniform functional bisectTamper-sealed 10-tablet foil
Citra 100mg100mgWhite, circular tablet“CITRA 100” / scoredHigh-barrier pharmaceutical blister
US Generic (Caraco)50mgWhite, round tablet“AN 627” debossedChild-resistant pharmacy vial
US Generic (Amneal)50mgWhite, round tablet“377” debossed / score lineChild-resistant pharmacy vial
Brand Ultram50mgWhite, capsule-shaped“ULTRAM” / “06 59”Manufacturer-sealed amber bottle

02. Blister packaging security features and batch lot verification

Authentic international formulations such as Traken, Mitidol, and Citra are packaged in medical-grade PVC-aluminium blister foils. Inspect the edge crimping: legitimate manufacturers emboss the exact lot number (Batch No.) and expiration date directly into the metal foil with crisp mechanical stamping. Backing printing must be sharp without ink bleeding, misalignment, or grammatical errors.

03. Chemical purity verification and excipient dissolution tests

Under USP monographs, genuine tramadol tablets dissolve rapidly in simulated gastric fluid (0.1 N HCl), releasing ≥80% of active drug within 30 minutes. Counterfeit pressed tablets frequently incorporate insoluble drywall gypsum, chalk, or microcrystalline wax that leaves gritty residue when submerged in water.

04. Storage conditions and blister foil integrity maintenance

Store tramadol tablets in their original protective packaging at controlled room temperature between 20°C and 25°C (68°F to 77°F). Protect from excessive heat and direct sunlight. Avoid storing tablets in bathroom cabinets, where humidity fluctuations can cause premature tablet swelling and degradation.

05. Counterfeit warning signs: Fentanyl adulteration and red flags

Rogue online vendors frequently distribute illicit pressed tablets containing deadly synthetic fentanyl masquerading as generic tramadol. Red flags include tablets with uneven thickness, chalky powdery surfaces, chipped edges, absent embossed lot numbers, or shipments delivered in loose plastic envelopes without blister packaging.

06. Detailed Receptor Neurobiology & Dual-Mechanism Pain Pathway Pharmacology

Unlike classical pure μ-opioid receptor agonists, Tramadol exhibits an innovative dual synergistic mechanism of action designed to attenuate both ascending nociceptive signals and augment descending inhibitory pain pathways within the central nervous system:

First, it binds directly to the μ-opioid receptor (MOR) located on presynaptic primary afferent neurons in the dorsal horn substantia gelatinosa and periaqueductal gray (PAG). Receptor coupling to inhibitory Gi/o proteins inhibits adenylate cyclase, reduces intracellular cyclic AMP, closes voltage-gated N-type calcium channels, and stimulates inward-rectifying potassium conductance. This presynaptic hyperpolarization directly suppresses the release of excitatory nociceptive neurotransmitters, specifically substance P, glutamate, and calcitonin gene-related peptide (CGRP).

Second, Tramadol produces potent monoamine reuptake inhibition. By blocking the norepinephrine transporter (NET) and serotonin transporter (SERT), it substantially increases synaptic concentrations of norepinephrine and serotonin in descending bulbospinal inhibitory tracts. Synaptic norepinephrine stimulates post-junctional α2-adrenergic receptors on secondary spinal projection neurons, evoking hyperpolarization that blocks dorsal horn nociceptive transmission.

PHARMACOLOGICAL TARGETNEUROANATOMICAL SITEMOLECULAR MECHANISMCLINICAL ANALGESIC MANIFESTATION
μ-Opioid Receptor (MOR)Dorsal horn substantia gelatinosa, periaqueductal grayGi/o-protein coupling, calcium channel blockadeImmediate suppression of acute nociceptive pain and visceral trauma
Norepinephrine Transporter (NET)Descending bulbospinal tract, locus coeruleus projectionsNeuronal reuptake inhibition, elevated synaptic NEPotent relief of chronic neuropathic, radicular, and central sensitization pain
α2-Adrenoceptor AgonismDorsal horn interneurons and second-order projection neuronsSpinal inhibitory hyperpolarizationSynergistic opioid-sparing effect, enabling lower therapeutic doses
Serotonin Transporter (SERT)Dorsal raphe nuclei, spinal cord dorsal horn5-HT reuptake blockade, 5-HT3 receptor modulationAffective pain suppression; necessitates monitoring for serotonin syndrome

Because the noradrenergic component contributes up to 50% of the total analgesic efficacy, Tramadol requires significantly less μ-opioid receptor occupancy than traditional opioids to achieve equivalent analgesia. This molecular architecture results in a markedly superior gastrointestinal safety profile, characterized by reduced incidence of severe constipation, respiratory depression, and rapid tolerance development.

07. Hepatic Clearance, Renal Impairment & Beers Criteria Safety

Safe clinical application of Tramadol demands precise evaluation of metabolic pathways and organ clearance kinetics. Unlike many conventional medications, elimination characteristics differ significantly across patient populations:

CLINICAL SUBGROUPPHARMACOKINETIC KINETICSDOSING MODIFICATION PROTOCOLSAFETY / MONITORING DIRECTIVE
Mild Hepatic Impairment (Child-Pugh A)Slight clearance reduction, normal volume of distributionStandard adult starting dose; titrate with conservative intervalsMonitor for augmented somnolence or dizziness
Moderate Hepatic Impairment (Child-Pugh B)Systemic exposure (AUC) increased 2- to 3-foldExtend dosing interval to every 8 to 12 hours; 50mg initial capStrict clinical observation; monitor transaminases
Severe Hepatic Impairment (Child-Pugh C)Marked metabolic shunting, unpredictable eliminationContraindicated; alternative analgesic pathways mandatedRisk of profound CNS sedation and drug accumulation
Renal Impairment (CrCl < 30 mL/min)Impaired clearance of polar glucuronide or active metabolitesExtend dosing interval; avoid exceeding minimum therapeutic thresholdMonitor creatinine clearance and signs of cognitive blunting
Geriatric Patients (≥ 65 Years)Decreased glomerular filtration, heightened CNS sensitivityInitiate at the lowest manufactured strength (50mg / dose)Fall precautions, orthostatic monitoring, Beers Criteria review

Under the American Geriatrics Society (AGS) Beers Criteria®, central-acting analgesics require judicious prescriber oversight in older adults due to age-related declines in neuromuscular coordination, cognitive reserve, and renal clearance. Where indicated, starting doses must be conservative with scheduled safety checks.

08. Comprehensive Patient Clinical Safety & Dispensing Checklist

Before initiating therapy or taking each scheduled dose of Tramadol, patients, caregivers, and clinical teams must review this standardized clinical verification checklist to prevent adverse drug events and dangerous drug-drug interactions:

PATIENT PRE-ADMINISTRATION SAFETY CRITERIA

  • Alcohol Abstinence Verification: Strict zero-tolerance for ethanol ingestion. Combining alcohol with central-acting analgesics causes synergistic CNS and respiratory depression, which can be fatal.
  • Concurrent CNS Depressant & Benzodiazepine Screen: Ensure no simultaneous dosing with sedatives, tranquilizers, or sleep aids unless specifically managed under multi-specialist clinical oversight.
  • Serotonergic Agent Co-Prescription Assessment: Confirm patient is not concurrently taking MAO inhibitors (contraindicated within 14 days), high-dose SSRIs, SNRIs, or triptans to prevent the development of life-threatening Serotonin Syndrome.
  • Respiratory & Bronchial Function Evaluation: Withhold administration if patient exhibits acute severe asthma, hypercapnia, or respiratory compromise in unmonitored settings.
  • Seizure History & Threshold Assessment: Screen for past epileptic episodes or concomitant medications that lower seizure threshold (especially relevant for monoamine-active analgesics).
  • Locked Storage & Secure Disposal: Maintain medication in its original child-resistant blister packaging within a locked lockbox at controlled room temperature (20°C to 25°C / 68°F to 77°F). Never store in bathroom medicine cabinets where humidity fluctuates.

09. Verified Pharmaceutical Formulations & Prescribing Profiles

Tramadol Traken 100mg
CENTRAL ANALGESIC • RX REQUIRED

Tramadol Traken 100mg

Standardized 100mg immediate-release formulation for moderate to moderately severe nociceptive pain.

View Traken Details →

Tramadol Mitidol 100mg
GENERIC EQUIVALENCE • RX REQUIRED

Tramadol Mitidol 100mg

High-affinity therapeutic formulation delivering rapid systemic relief with dual opioid-monoamine kinetics.

View Mitidol Details →

Citra 100mg (Tramadol HCl)
MANUFACTURER SEALED • RX REQUIRED

Citra 100mg (Tramadol HCl)

Pure tramadol hydrochloride oral tablets in tamper-evident blister packaging.

View Citra Details →

10. Frequently Asked Questions

What does an authentic 50mg tramadol tablet look like?

Most US generic 50mg tramadol tablets are small, white, round tablets debossed with imprint codes such as “AN 627” or “377” and feature a central score line on the reverse.

What are Traken and Mitidol 100mg tablets?

Traken and Mitidol are internationally authorized, high-quality generic 100mg tramadol formulations packaged in blister strips compliant with European and international GMP quality standards.

Can authentic tramadol tablets be broken in half along the score line?

Yes. Immediate-release tramadol tablets with functional score lines can be cleanly halved using a pill cutter to administer half-doses as directed by your physician.

How can you spot a counterfeit tramadol pill?

Counterfeit pills often look crumbly or powdery, have blurry or shallow imprints, vary in thickness within the same batch, and are sold loose rather than in sealed blister packaging.

What should I do if my tramadol tablets smell chemical or strange?

Authentic tramadol tablets have virtually no odor. If your tablets have a strong chemical, solvent, or vinegar-like smell, do not consume them and contact a licensed pharmacist immediately.

11. Clinical References & Regulatory Sources

  1. United States Pharmacopeia (USP). Tramadol Hydrochloride Tablets Official Compendium. Source Database.
  2. National Association of Boards of Pharmacy (NABP). Identifying Counterfeit Medicines and Rogue Distributors. Source Database.
  3. FDA CDER. Counterfeit Medicine Warning and Public Safety Advisories. Source Database.

Consult a Clinical Pharmacy Specialist

Have questions regarding Tramadol dosing intervals, CYP enzyme interactions, or physician-guided discontinuation protocols? Connect with our licensed clinical pharmacy team for patient safety guidance.

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