The aim of this study is to investigate the efficacy and safety of 1% GPB cream after 4 weeks of treatment compared with placebo with a sufficient number of patients to obtain statistically significant results, and to assess the long-term safety of 1% GPB cream.

Inclusion Criteria:

• Diagnosis of severe primary axillary hyperhidrosis with a HDSS score of 3 or 4
• At least 50 mg of sweat production in each axilla measured gravimetrically at room temperature and at a humidity consistent with the normal climate in that area over a period of 5 minutes (patients should have acclimatized to that room for at least 30 minutes)
• Men and women aged 18 to 65 years at the time of informed consent with a body mass index of 18-32 kg/m2
• Able to comply with protocol requirements, including overnight stays, blood sample collections as defined in the protocol subjects
• Willing and able to provide written informed consent

Exclusion Criteria:

• Known allergy to any of the components in the investigational product.
• Hypersensitivity against glycopyrrolate
• Secondary hyperhidrosis, for example, hyperhidrosis that is secondary to other underlying diseases including hyperthyroidism, lymphoma and malaria, climacteric hyperhidrosis.
• Previous surgical treatment of hyperhidrosis including sympathectomy, surgical debulking of the sweat glands, subcutaneous tissue curettage and ultrasonic surgery.
• Botulinum toxin treatment in the prior 4 months.
• Angle closure glaucoma or its precipitation (narrow angle).
• Mycotic, other skin infections and other dermal disorder including infection at anticipated application sites in either axilla.
• Any condition or situation that, in the investigator's or sub-investigator's opinion, may interfere with the patient's participation in the study;