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Maria Aparecida Carvalho tends to her marijuana plants that she cultivates for medicinal purposes, in the backyard of her home in Sao Paulo, Wednesday, July 10, 2024. (AP Photo/Andre Penner)

Maria Aparecida Carvalho tends to her marijuana plants that she cultivates for medicinal purposes, in the backyard of her home in Sao Paulo, Wednesday, July 10, 2024. (AP Photo/Andre Penner)

Janaina Silva gives a dose of cannabidiol or CBD, to her four-year-old son Murillo after an epileptic seizure, at her parents' home in Guaruja, Brazil, Monday, July 8, 2024. To lessen and shorten his seizures, Murillo takes a steady dose of CBD, that Silva acquires for free through Sao Paulo state’s public health system. (AP Photo/Andre Penner)

Janaina Silva gives a dose of cannabidiol or CBD, to her four-year-old son Murillo after an epileptic seizure, at her parents' home in Guaruja, Brazil, Monday, July 8, 2024. To lessen and shorten his seizures, Murillo takes a steady dose of CBD, that Silva acquires for free through Sao Paulo state’s public health system. (AP Photo/Andre Penner)

Maria Aparecida Carvalho gives a dose of liquid cannabidiol or CBD, to her daughter Clárian, diagnosed with Dravet Syndrome, at their home in Sao Paulo, Wednesday, July 10, 2024. Clárian was diagnosed at age 10 with Dravet Syndrome, a severe form of epilepsy that can cause cardiorespiratory arrests and lead to sudden death. (AP Photo/Andre Penner)

Maria Aparecida Carvalho gives a dose of liquid cannabidiol or CBD, to her daughter Clárian, diagnosed with Dravet Syndrome, at their home in Sao Paulo, Wednesday, July 10, 2024. Clárian was diagnosed at age 10 with Dravet Syndrome, a severe form of epilepsy that can cause cardiorespiratory arrests and lead to sudden death. (AP Photo/Andre Penner)

Maria Aparecida Carvalho holds a bud of marijuana that she cultivates for medicinal purposes, in the backyard of her home in Sao Paulo, Wednesday, July 10, 2024. (AP Photo/Andre Penner)

Maria Aparecida Carvalho holds a bud of marijuana that she cultivates for medicinal purposes, in the backyard of her home in Sao Paulo, Wednesday, July 10, 2024. (AP Photo/Andre Penner)

Janaina Silva smiles at her four-year-old son Murillo, who has severe epilepsy, at her parents' home in Guaruja, Brazil, Monday, July 8, 2024. To lessen and shorten his seizures, Murillo takes a steady dose of liquid cannabidiol or CBD, that Silva acquires for free through Sao Paulo state’s public health system. (AP Photo/Andre Penner)

Janaina Silva smiles at her four-year-old son Murillo, who has severe epilepsy, at her parents' home in Guaruja, Brazil, Monday, July 8, 2024. To lessen and shorten his seizures, Murillo takes a steady dose of liquid cannabidiol or CBD, that Silva acquires for free through Sao Paulo state’s public health system. (AP Photo/Andre Penner)

Janaina Silva cries during an interview while talking about her four-year-old son Murillo, who suffers from severe epilepsy, at her parents' home in Guaruja, Brazil, Monday, July 8, 2024. To lessen and shorten his seizures, Murillo takes a steady dose of liquid cannabidiol (CBD) that Silva acquires for free through Sao Paulo state’s public health system. (AP Photo/Andre Penner)

Janaina Silva cries during an interview while talking about her four-year-old son Murillo, who suffers from severe epilepsy, at her parents' home in Guaruja, Brazil, Monday, July 8, 2024. To lessen and shorten his seizures, Murillo takes a steady dose of liquid cannabidiol (CBD) that Silva acquires for free through Sao Paulo state’s public health system. (AP Photo/Andre Penner)

Janaina Silva caresses her four-year-old son Murillo after an epileptic seizure at her parents' home in Guaruja, Brazil, Monday, July 8, 2024. To lessen and shorten his seizures, Murillo takes a steady dose of liquid cannabidiol or CBD, that Silva acquires for free through Sao Paulo state’s public health system. (AP Photo/Andre Penner)

Janaina Silva caresses her four-year-old son Murillo after an epileptic seizure at her parents' home in Guaruja, Brazil, Monday, July 8, 2024. To lessen and shorten his seizures, Murillo takes a steady dose of liquid cannabidiol or CBD, that Silva acquires for free through Sao Paulo state’s public health system. (AP Photo/Andre Penner)

Maria Aparecida Carvalho speaks during an interview while standing next to the marijuana plants she cultivates for medicinal purposes, in the backyard of her home in Sao Paulo, Wednesday, July 10, 2024. (AP Photo/Andre Penner)

Maria Aparecida Carvalho speaks during an interview while standing next to the marijuana plants she cultivates for medicinal purposes, in the backyard of her home in Sao Paulo, Wednesday, July 10, 2024. (AP Photo/Andre Penner)

Janaina Silva tends to her four-year-old son Murillo during an epileptic seizure, at her parents' home in Guaruja, Brazil, Monday, July 8, 2024. To lessen and shorten his seizures, Murillo takes a steady dose of liquid cannabidiol or CBD, that Silva acquires for free through Sao Paulo state’s public health system. (AP Photo/Andre Penner)

Janaina Silva tends to her four-year-old son Murillo during an epileptic seizure, at her parents' home in Guaruja, Brazil, Monday, July 8, 2024. To lessen and shorten his seizures, Murillo takes a steady dose of liquid cannabidiol or CBD, that Silva acquires for free through Sao Paulo state’s public health system. (AP Photo/Andre Penner)

Four-year-old Murillo, who suffers from severe epilepsy, watches TV at his grandparent's home in Guaruja, Brazil, Monday, July 8, 2024. To lessen and shorten his seizures, Murillo takes a steady dose of liquid cannabidiol or CBD, that his mother, pictured in background, acquires for free through Sao Paulo state’s public health system. (AP Photo/Andre Penner)

Four-year-old Murillo, who suffers from severe epilepsy, watches TV at his grandparent's home in Guaruja, Brazil, Monday, July 8, 2024. To lessen and shorten his seizures, Murillo takes a steady dose of liquid cannabidiol or CBD, that his mother, pictured in background, acquires for free through Sao Paulo state’s public health system. (AP Photo/Andre Penner)

Maria Aparecida Carvalho sits with her daughter Clárian in their backyard next to the marijuana plants Carvalho cultivates for medicinal purposes, in Sao Paulo, Wednesday, July 10, 2024. Clárian was diagnosed at age 10 with Dravet Syndrome, a severe form of epilepsy that can cause cardiorespiratory arrests and lead to sudden death. (AP Photo/Andre Penner)

Maria Aparecida Carvalho sits with her daughter Clárian in their backyard next to the marijuana plants Carvalho cultivates for medicinal purposes, in Sao Paulo, Wednesday, July 10, 2024. Clárian was diagnosed at age 10 with Dravet Syndrome, a severe form of epilepsy that can cause cardiorespiratory arrests and lead to sudden death. (AP Photo/Andre Penner)

Janaina Silva watches over her four-year-old son Murillo after an epileptic seizure at her parents' home in Guaruja, Brazil, Monday, July 8, 2024. To lessen and shorten his seizures, Murillo takes a steady dose of liquid cannabidiol or CBD, that Silva acquires for free through Sao Paulo state’s public health system. (AP Photo/Andre Penner)

Janaina Silva watches over her four-year-old son Murillo after an epileptic seizure at her parents' home in Guaruja, Brazil, Monday, July 8, 2024. To lessen and shorten his seizures, Murillo takes a steady dose of liquid cannabidiol or CBD, that Silva acquires for free through Sao Paulo state’s public health system. (AP Photo/Andre Penner)