DoxycyclineTremorTabletsEssential TremorTablets, Enteric-CoatedChemistry, PharmaceuticalExcipientsAnti-Bacterial AgentsDrug CompoundingTetracyclinesDelayed-Action PreparationsTetracyclineMatrix Metalloproteinase InhibitorsTechnology, PharmaceuticalMethylcelluloseAtaxiaPowdersAdministration, OralParkinson DiseaseSolubilityHardnessElectromyographyDeep Brain StimulationAzithromycinCapsulesMinocyclineStereotaxic TechniquesBrucellosisHarmineThalamusHandwritingDouble-Blind MethodHarmalineLubricantsFilaricidesTreatment OutcomeDosage FormsBiological AvailabilityTherapeutic EquivalencyMovement DisordersOxytetracyclineDrug StabilityDrug Therapy, CombinationCerebellar DiseasesCellulosePovidonePrimidonePostureTremorineDysarthriaTime FactorsAnti-Infective AgentsAdministration, BuccalHardness TestsMicrobial Sensitivity TestsFragile X SyndromeWristFragile X Mental Retardation ProteinMatrix Metalloproteinase 8Drug CombinationsTrimethoprim-Sulfamethoxazole CombinationCross-Over StudiesAntimalarialsCompressive StrengthMyoclonusPlacebosCerebellar Ataxia