A formula for sodium phenylbutyrate oral solution? Commercially is that Ammonaps.

R/Na phenylbutyrate 20g Ora-Plus 50ml Ora-Sweet SF AD 100ml

Ora-Plus®, Ora-Sweet® and Ora-Sweet SF® ( Paddock Laboratories ) ORA-Plus®, Ora-Sweet® and Ora-Sweet SF® are commercially manufactured products which have been used in many stability studies published in North America. Ora-Plus® contains: Purified water, microcrystalline cellulose, carboxymethylcellulose sodium, xanthan gum, flavouring, citric acid, sodium phosphate, simethicone, methylparaben, and potassium sorbate. pH 4.2. Ora-Sweet® contains: Purified water, sucrose, glycerin, sorbitol, flavouring, citric acid, sodium phosphate, all and potassium sorbate. pH 4.2 Ora-Sweet SF® contains: Purified water, glycerin, sorbitol, sodium saccharin, xanthan gum, flavouring, citric acid, sodium citrate, methylparaben, propylparaben, potassium sorbate. pH 4.2.

Perhaps also satisfies Excipiens viscosus sine Saccharo USP See Galenic Formularium pag 149.

Why not everything Ora-Sweet?