ALBANY — When New York State’s lawmakers were mulling legalizing the medical use of marijuana last summer, some proponents feared that the proposed law was so restrictive that it would prevent many patients from receiving the drug.

Now, with the state’s Health Department close to issuing final regulations about the new program, the law’s supporters say their fears may soon be realized.

The law itself is quite restrictive: Only 10 conditions qualify for medical use of marijuana; the drug may not be smoked; and New York will initially allow only 20 dispensaries across the state, run by five organizations.

The regulations go even further. Sales would be restricted to five so-called brands of medical marijuana, which concerns some supporters who say patients and doctors need flexibility to find out which of the hundreds of strains of marijuana works best for a particular condition. (The regulations even stipulate that brand names cannot be “coined or fanciful, and may not include any ‘street,’ slang or other name.”)