According to the sources provided, Ativan (lorazepam) is available in tablet form with a strength of 0.5 mg. However, the sources do not explicitly mention whether there is an equal weight of lorazepam in each 0.5 mg tablet or if it varies.

To determine if there is an equal weight of lorazepam in each tablet, it would be best to consult the product labeling or contact the manufacturer directly. The drug patent watch website [1] provides information on the patent status and expiration of drugs but does not specify the weight consistency of lorazepam in Ativan tablets.

The National Center for Biotechnology Information (NCBI) article [2] discusses the pharmacokinetics of lorazepam, including its absorption, distribution, metabolism, and elimination. However, it does not provide information on the weight consistency of lorazepam tablets.

The National Health Service (NHS) website [3] provides general information about lorazepam, including how and when to take it. However, it does not address the weight consistency of lorazepam tablets.

To obtain accurate information about the weight consistency of lorazepam in Ativan tablets, it is recommended to consult the product packaging, prescribing information, or contact the manufacturer directly.

Sources:
[1] Drug Patent Watch: Ativan. Retrieved from https://www.drugpatentwatch.com/p/tradename/ATIVAN
[2] National Center for Biotechnology Information: Pharmacokinetics of lorazepam. Retrieved from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2827917/
[3] NHS: Lorazepam - How and when to take lorazepam. Retrieved from https://www.nhs.uk/medicines/lorazepam/how-and-when-to-take-lorazepam/