I had to Google. There's research, which seems to bear out what the OP has been told:
Camel's milk can be considered an option for the individuals intolerant to lactose who present symptoms when ingesting cow's milk.
pubmed.ncbi.nlm.nih.gov
Abstract
Objective: To determine whether camel's milk can be consumed by patients intolerant to lactose without undesirable reactions.
Patients and method: Twenty-five patients with clinical and laboratorial diagnosis of lactose intolerance underwent provocation tests with growing amounts of cow's milk and subsequently with camel's milk.
Results: Except for two patients, who had mild reactions to the maximum dosage of camel's milk (250 mL), the acceptance was excellent. Pasteurization of camel's milk did not affect tolerance. Also, most of the patients showed significant clinical reactions when drinking very low amounts of cow's milk.
Conclusion: Camel's milk can be considered an option for the individuals intolerant to lactose who present symptoms when ingesting cow's milk.
Every day is a school day.
{edited because pushed "post" too soon]