This information is intended for use by health professionals

1. Name of the medicinal product

Tyvera 100mg Tablets

Thiamine Hydrochloride 100 mg Tablets

2. Qualitative and quantitative composition

Each tablet contains 100mg thiamine hydrochloride.

This product contains lactose – see section 4.4. For a full list of excipients, see section 6.1.

3. Pharmaceutical form


White uncoated tablets, 11mm in diameter, one side scored, the other marked T/100.

The score line is only to facilitate breaking for ease of swallowing and not to divide into equal doses.

4. Clinical particulars
4.1 Therapeutic indications

Treatment of thiamine deficiency

4.2 Posology and method of administration

Adults, the Elderly and Children over three years:

Mild chronic deficiency: 50mg daily

Severe deficiency: 100mg three times daily.

Not recommended for children under three years.

Route of administration: oral

4.3 Contraindications

Hypersensitivity to Thiamine Hydrochloride or to any of the excipients listed in section 6.1

4.4 Special warnings and precautions for use

This medicinal product contains lactose monohydrate. Patients with rare hereditary problems of galactose intolerance, the Lapp lactase deficiency or glucose-galactose malabsorption should not take this medicine.

This medicinal product also contains sucrose. Patients with rare hereditary problems of fructose intolerance, malabsorption or sucrose-isomaltase insufficiency should not take this medicine

4.5 Interaction with other medicinal products and other forms of interaction

The thiamine antagonists thiosemicarbazone and 5-fluorouracil can neutralise the effect of thiamine. Patients using any of these treatments may need their thiamine dose adjusted.

Thiamine could give false positive results for urobilinogen determination by the Ehrlich's reaction. High doses of thiamine may interfere with spectrophotometric assays of theophylline plasma concentration.

4.6 Pregnancy and lactation

This product is not intended for use in pregnant or lactating women.

4.7 Effects on ability to drive and use machines

No studies on the effect on the ability to drive and use machines have been performed. However, patients should be cautioned to see how they react before driving or operating machinery.

4.8 Undesirable effects

Gastrointestinal disorders:

Mild gastrointestinal events such as nausea, vomiting, diarrhoea, and abdominal pain have been reported. Frequency not known (cannot be estimated from data).

Immune system disorders:

Hypersensitivity reactions have been reported (mainly after parenteral administration). Allergic and anaphylactic reactions, with symptoms of pruritus, urticaria, itching, hives, angioedema, abdominal pain, respiratory distress, tachycardia, palpitations, and shock have been reported in single cases. Frequency not known (cannot be estimated from data).

Reporting of suspected adverse reactions

Reporting suspected adverse reactions after authorisation of the medicinal product is important. It allows continued monitoring of the benefit/risk balance of the medicinal product. Healthcare professionals are asked to report any suspected adverse reactions via the Yellow Card Scheme; Website:

4.9 Overdose

Overdose has not been reported.

5. Pharmacological properties
5.1 Pharmacodynamic properties

ATC Code: A11DA01

Pharmacotheraputic Group: Vitamin B1, Plain

Thiamine is an essential co-enzyme for carbohydrate metabolism.

5.2 Pharmacokinetic properties

Thiamine is well absorbed from the gastrointestinal tract following oral administration, although the absorption of large doses is limited. It is widely distributed to most body tissues and appears in breast milk. Within the cell, thiamine is mostly present as the diphosphate. Thiamine is not stored to any appreciable extent in the body; amounts in excess of the body's requirements are excreted in the urine as unchanged thiamine or metabolites.

5.3 Preclinical safety data

No relevant data

6. Pharmaceutical particulars
6.1 List of excipients

Lactose monohydrate

Maize starch


Sodium starch glycolate


Magnesium stearate

6.2 Incompatibilities

None known

6.3 Shelf life

2 years

6.4 Special precautions for storage

Do not store above 25°C; store in the original package.

6.5 Nature and contents of container

Pack of 100 tablets in a polypropylene bottle with a polyethylene cap.

6.6 Special precautions for disposal and other handling


7. Marketing authorisation holder

Accord Healthcare Limited

Sage House

319 Pinner Road

North Harrow



United Kingdom

8. Marketing authorisation number(s)

PL 20075/0714

9. Date of first authorisation/renewal of the authorisation


10. Date of revision of the text