Ammonium myristate is passage-delaying substance. It was used as a substance for influencing gastrointestinal passage. The addition of ammonium myristate caused a delay of about 1.5 h in the transit time of the absorbing part of the gastrointestinal tract. The addition of ammonium myristate improves the availability of nitrofurantoin from a slow releasing dosage form - an average increase is 23.8% of the total amount of nitrofurantoin excreted in the urine compared to the values obtained from the reference dosage form without the additional substance. The kinetics of renal elimination of nitrofurantoin is characterized by the longer duration of urinary excretion.

Ammonium myristate is passage-delaying substance. It was used as a substance for influencing gastrointestinal passage. The addition of ammonium myristate caused a delay of about 1.5 h in the transit time of the absorbing part of the gastrointestinal tract. The addition of ammonium myristate improves the availability of nitrofurantoin from a slow releasing dosage form - an average increase is 23.8% of the total amount of nitrofurantoin excreted in the urine compared to the values obtained from the reference dosage form without the additional substance. The kinetics of renal elimination of nitrofurantoin is characterized by the longer duration of urinary excretion.

Picoperine (Coben) is an antitussive agent.