AVOLAC oral sol. 100 ml (Glass)

Therapeutic Class

Laxatives, Purgatives


1. Constipation (chronic constipation): In every case of chronic constipation, initial treatment should consist of a diet rich in fiber (vegetables, salads, fruits, supplements of linseeds, wheat germ etc.) a generous amount of liquids and much physical exercise. Avolac is only to be taken when these measures prove insufficient. 2. Intestinal flora disturbances: In damage to intestinal flora, following therapy with broad spectrum antibiotics, gall bladder diseases and intestinal diseases (colttis, diverticulosis, megacolon etc.) 3. Increased blood ammonia levels (hyperammonemia in hepatopathy, portal systemic encephalopathy, precoma, coma). 4. Diseases of the gums and the parodontic apparatus (paradontosis, bleeding from the gums, inflammation, dystrophy).

Chemical Composition

Avolac (Lactulose) is an oral solution containing Lactulose USP 3.35 g / 5 ml.


100 ml / Bot

Dosage & Administration

Dosage should be followed accurately unless otherwise specified. 1. In constipation (chronic constipation): Due to the fact that every organism responds differently to Avolac, each patient must determine his/her own optimal dose in the course of time. Adults: Initially 3-6 tea-spoons daily; In long-term therapy 1.5-6 tea-spoons daily, Children up to 14 years: Initially 3 tea-spoons daily; in long-term therapy 1-2 tea-spoons daily, Infants and toddlers: initially 1-2 tea-spoons daily; in long-term therapy 1 tea-spoon daily. With Avolac a prompt laxative effect may be achieved by drinking a mixture of 3-9 tea-spoons in 1/8-1/4 liter water, coffee, tea, fruit juice, or milk on an empty stomach after getting up in the morning. Normally, defecation takes place approximately 2 hours later in the form of a fluid pulpy mass (increased defecation reflex). 2. In damaged intestinal flora (e.g. following long-term antibiotic treatment): Adults: 1-2 tea-spoon daily, Children: 1 tea-spoon daily. 3. For reduction of blood ammonia level (In hepatopathy): A maximum of 60-100 g Lactulose daily, that is. 18-30 tea-spoons. 4. In precoma: A maximum of 100 g Lactulose daily, that is 30 tea-spoons Avolac spread over the course of the day. 5. Diseases of the gums and the parodontic apparatus (paradontopathy): Adults : 3-6 tea-spoons daily.


Hypersensitivity to either galactose and/ or lactose, galactose-free diet. Gastro-cardiac symptom complex (heart problems stemming from the gastro-intestinal tract), suspected intestinal obstruction.

Side Effects

Occasionally flatulence can occur at the beginning of treatment, this is rapidly eliminated by reducing the dose and/ or taking the daily dose in several smaller individual portions spread over the course of the day. Overdosage can result in diarrhoea. In abuse: loss of electrolytes (primarilty Potassium):

Drug Interaction

The glycosidic effect of cardiac glycosides can be intensified by potassium deficiency in abuse.